primitives.cpp revision 54b6cfa9a9e5b861a9930af873580d6dc20f773
154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project/* libs/opengles/primitives.cpp 254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** 354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** Copyright 2006, The Android Open Source Project 454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** 554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License"); 654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** you may not use this file except in compliance with the License. 754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** You may obtain a copy of the License at 854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** 954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** http://www.apache.org/licenses/LICENSE-2.0 1054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** 1154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** Unless required by applicable law or agreed to in writing, software 1254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** distributed under the License is distributed on an "AS IS" BASIS, 1354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** See the License for the specific language governing permissions and 1554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project** limitations under the License. 1654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project*/ 1754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 1854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include <stdio.h> 1954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include <stdlib.h> 2054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include <math.h> 2154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 2254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "context.h" 2354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "primitives.h" 2454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "light.h" 2554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "matrix.h" 2654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "vertex.h" 2754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "fp.h" 2854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#include "TextureObjectManager.h" 2954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 3054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectextern "C" void iterators0032(const void* that, 3154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t* it, int32_t c0, int32_t c1, int32_t c2); 3254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 3354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectnamespace android { 3454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 3554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 3654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 3754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void primitive_point(ogles_context_t* c, vertex_t* v); 3854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void primitive_line(ogles_context_t* c, vertex_t* v0, vertex_t* v1); 3954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void primitive_clip_triangle(ogles_context_t* c, 4054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 4154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 4254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void primitive_nop_point(ogles_context_t* c, vertex_t* v); 4354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void primitive_nop_line(ogles_context_t* c, vertex_t* v0, vertex_t* v1); 4454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void primitive_nop_triangle(ogles_context_t* c, 4554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 4654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 4754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline bool cull_triangle(ogles_context_t* c, 4854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 4954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 5054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lerp_triangle(ogles_context_t* c, 5154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 5254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 5354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lerp_texcoords(ogles_context_t* c, 5454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 5554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 5654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lerp_texcoords_w(ogles_context_t* c, 5754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 5854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 5954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void triangle(ogles_context_t* c, 6054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 6154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 6254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void clip_triangle(ogles_context_t* c, 6354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2); 6454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 6554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic unsigned int clip_line(ogles_context_t* c, 6654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* s, vertex_t* p); 6754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 6854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 6954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#if 0 7054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark - 7154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#endif 7254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 7354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleDarkSmooth(ogles_context_t* c, 7454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 7554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 7654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v0->flags & vertex_t::LIT)) { 7754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v0->flags |= vertex_t::LIT; 7854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLvoid* cp = c->arrays.color.element( 7954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v0->index & vertex_cache_t::INDEX_MASK); 8054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.color.fetch(c, v0->color.v, cp); 8154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 8254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v1->flags & vertex_t::LIT)) { 8354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v1->flags |= vertex_t::LIT; 8454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLvoid* cp = c->arrays.color.element( 8554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v1->index & vertex_cache_t::INDEX_MASK); 8654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.color.fetch(c, v1->color.v, cp); 8754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 8854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if(!(v2->flags & vertex_t::LIT)) { 8954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v2->flags |= vertex_t::LIT; 9054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLvoid* cp = c->arrays.color.element( 9154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v2->index & vertex_cache_t::INDEX_MASK); 9254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.color.fetch(c, v2->color.v, cp); 9354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 9454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 9554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 9654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleDarkFlat(ogles_context_t* c, 9754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 9854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 9954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v2->flags & vertex_t::LIT)) { 10054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v2->flags |= vertex_t::LIT; 10154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLvoid* cp = c->arrays.color.element( 10254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v2->index & vertex_cache_t::INDEX_MASK); 10354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.color.fetch(c, v2->color.v, cp); 10454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 10554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // configure the rasterizer here, before we clip 10654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.color4xv(c, v2->color.v); 10754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 10854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 10954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleSmooth(ogles_context_t* c, 11054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 11154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 11254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v0->flags & vertex_t::LIT)) 11354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightVertex(c, v0); 11454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v1->flags & vertex_t::LIT)) 11554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightVertex(c, v1); 11654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if(!(v2->flags & vertex_t::LIT)) 11754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightVertex(c, v2); 11854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 11954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 12054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleFlat(ogles_context_t* c, 12154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 12254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 12354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v2->flags & vertex_t::LIT)) 12454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightVertex(c, v2); 12554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // configure the rasterizer here, before we clip 12654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.color4xv(c, v2->color.v); 12754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 12854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 12954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// The fog versions... 13054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 13154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 13254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid lightVertexDarkSmoothFog(ogles_context_t* c, vertex_t* v) 13354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 13454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v->flags & vertex_t::LIT)) { 13554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->flags |= vertex_t::LIT; 13654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->fog = c->fog.fog(c, v->window.z); 13754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLvoid* cp = c->arrays.color.element( 13854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->index & vertex_cache_t::INDEX_MASK); 13954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.color.fetch(c, v->color.v, cp); 14054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 14154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 14254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 14354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid lightVertexDarkFlatFog(ogles_context_t* c, vertex_t* v) 14454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 14554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v->flags & vertex_t::LIT)) { 14654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->flags |= vertex_t::LIT; 14754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->fog = c->fog.fog(c, v->window.z); 14854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 14954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 15054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 15154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid lightVertexSmoothFog(ogles_context_t* c, vertex_t* v) 15254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 15354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(v->flags & vertex_t::LIT)) { 15454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->fog = c->fog.fog(c, v->window.z); 15554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightVertex(c, v); 15654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 15754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 15854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 15954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleDarkSmoothFog(ogles_context_t* c, 16054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 16154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 16254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkSmoothFog(c, v0); 16354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkSmoothFog(c, v1); 16454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkSmoothFog(c, v2); 16554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 16654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 16754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleDarkFlatFog(ogles_context_t* c, 16854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 16954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 17054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkFlatFog(c, v0); 17154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkFlatFog(c, v1); 17254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkSmoothFog(c, v2); 17354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // configure the rasterizer here, before we clip 17454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.color4xv(c, v2->color.v); 17554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 17654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 17754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleSmoothFog(ogles_context_t* c, 17854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 17954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 18054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexSmoothFog(c, v0); 18154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexSmoothFog(c, v1); 18254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexSmoothFog(c, v2); 18354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 18454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 18554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic void lightTriangleFlatFog(ogles_context_t* c, 18654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 18754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 18854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkFlatFog(c, v0); 18954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexDarkFlatFog(c, v1); 19054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightVertexSmoothFog(c, v2); 19154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // configure the rasterizer here, before we clip 19254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.color4xv(c, v2->color.v); 19354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 19454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 19554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 19654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 19754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projecttypedef void (*light_primitive_t)(ogles_context_t*, 19854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t*, vertex_t*, vertex_t*); 19954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 20054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// fog 0x4, light 0x2, smooth 0x1 20154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic const light_primitive_t lightPrimitive[8] = { 20254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleDarkFlat, // no fog | dark | flat 20354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleDarkSmooth, // no fog | dark | smooth 20454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleFlat, // no fog | light | flat 20554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleSmooth, // no fog | light | smooth 20654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleDarkFlatFog, // fog | dark | flat 20754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleDarkSmoothFog, // fog | dark | smooth 20854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleFlatFog, // fog | light | flat 20954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lightTriangleSmoothFog // fog | light | smooth 21054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project}; 21154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 21254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid ogles_validate_primitives(ogles_context_t* c) 21354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 21454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t enables = c->rasterizer.state.enables; 21554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 21654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // set up the lighting/shading/smoothing/fogging function 21754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int index = enables & GGL_ENABLE_SMOOTH ? 0x1 : 0; 21854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project index |= c->lighting.enable ? 0x2 : 0; 21954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project index |= enables & GGL_ENABLE_FOG ? 0x4 : 0; 22054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightTriangle = lightPrimitive[index]; 22154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 22254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // set up the primitive renderers 22354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_likely(c->arrays.vertex.enable)) { 22454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->prims.renderPoint = primitive_point; 22554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->prims.renderLine = primitive_line; 22654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->prims.renderTriangle = primitive_clip_triangle; 22754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 22854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->prims.renderPoint = primitive_nop_point; 22954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->prims.renderLine = primitive_nop_line; 23054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->prims.renderTriangle = primitive_nop_triangle; 23154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 23254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 23354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 23454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 23554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 23654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid compute_iterators_t::initTriangle( 23754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t const* v0, vertex_t const* v1, vertex_t const* v2) 23854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 23954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dx01 = v1->window.x - v0->window.x; 24054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dy10 = v0->window.y - v1->window.y; 24154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dx20 = v0->window.x - v2->window.x; 24254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dy02 = v2->window.y - v0->window.y; 24354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_area = m_dx01*m_dy02 + (-m_dy10)*m_dx20; 24454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 24554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 24654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid compute_iterators_t::initLerp(vertex_t const* v0, uint32_t enables) 24754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 24854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_x0 = v0->window.x; 24954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_y0 = v0->window.y; 25054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLcoord area = (m_area + TRI_HALF) >> TRI_FRACTION_BITS; 25154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLcoord minArea = 2; // cannot be inversed 25254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // triangles with an area smaller than 1.0 are not smooth-shaded 25354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 25454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int q=0, s=0, d=0; 25554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (abs(area) >= minArea) { 25654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Here we do some voodoo magic, to compute a suitable scale 25754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // factor for deltas/area: 25854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 25954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // First compute the 1/area with full 32-bits precision, 26054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // gglRecipQNormalized returns a number [-0.5, 0.5[ and an exponent. 26154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project d = gglRecipQNormalized(area, &q); 26254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 26354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Then compute the minimum left-shift to not overflow the muls 26454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // below. 26554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s = 32 - gglClz(abs(m_dy02)|abs(m_dy10)|abs(m_dx01)|abs(m_dx20)); 26654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 26754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // We'll keep 16-bits of precision for deltas/area. So we need 26854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // to shift everything left an extra 15 bits. 26954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s += 15; 27054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 27154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // make sure all final shifts are not > 32, because gglMulx 27254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // can't handle it. 27354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (s < q) s = q; 27454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (s > 32) { 27554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project d >>= 32-s; 27654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s = 32; 27754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 27854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 27954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 28054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dx01 = gglMulx(m_dx01, d, s); 28154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dy10 = gglMulx(m_dy10, d, s); 28254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dx20 = gglMulx(m_dx20, d, s); 28354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_dy02 = gglMulx(m_dy02, d, s); 28454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_area_scale = 32 + q - s; 28554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_scale = 0; 28654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 28754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_TMUS) { 28854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int A = gglClz(abs(m_dy02)|abs(m_dy10)|abs(m_dx01)|abs(m_dx20)); 28954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int B = gglClz(abs(m_x0)|abs(m_y0)); 29054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project m_scale = max(0, 32 - (A + 16)) + 29154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project max(0, 32 - (B + TRI_FRACTION_BITS)) + 1; 29254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 29354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 29454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 29554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectint compute_iterators_t::iteratorsScale(GGLfixed* it, 29654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t c0, int32_t c1, int32_t c2) const 29754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 29854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dc01 = c1 - c0; 29954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dc02 = c2 - c0; 30054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int A = gglClz(abs(c0)); 30154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int B = gglClz(abs(dc01)|abs(dc02)); 30254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int scale = min(A, B - m_scale) - 2; 30354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (scale >= 0) { 30454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c0 <<= scale; 30554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project dc01 <<= scale; 30654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project dc02 <<= scale; 30754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 30854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c0 >>= -scale; 30954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project dc01 >>= -scale; 31054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project dc02 >>= -scale; 31154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 31254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int s = m_area_scale; 31354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dcdx = gglMulAddx(dc01, m_dy02, gglMulx(dc02, m_dy10, s), s); 31454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dcdy = gglMulAddx(dc02, m_dx01, gglMulx(dc01, m_dx20, s), s); 31554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t c = c0 - (gglMulAddx(dcdx, m_x0, 31654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project gglMulx(dcdy, m_y0, TRI_FRACTION_BITS), TRI_FRACTION_BITS)); 31754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[0] = c; 31854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[1] = dcdx; 31954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[2] = dcdy; 32054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return scale; 32154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 32254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 32354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid compute_iterators_t::iterators1616(GGLfixed* it, 32454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGLfixed c0, GGLfixed c1, GGLfixed c2) const 32554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 32654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLfixed dc01 = c1 - c0; 32754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLfixed dc02 = c2 - c0; 32854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // 16.16 x 16.16 == 32.32 --> 16.16 32954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int s = m_area_scale; 33054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dcdx = gglMulAddx(dc01, m_dy02, gglMulx(dc02, m_dy10, s), s); 33154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dcdy = gglMulAddx(dc02, m_dx01, gglMulx(dc01, m_dx20, s), s); 33254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t c = c0 - (gglMulAddx(dcdx, m_x0, 33354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project gglMulx(dcdy, m_y0, TRI_FRACTION_BITS), TRI_FRACTION_BITS)); 33454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[0] = c; 33554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[1] = dcdx; 33654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[2] = dcdy; 33754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 33854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 33954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#if defined(__arm__) && !defined(__thumb__) 34054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectinline void compute_iterators_t::iterators0032(int32_t* it, 34154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t c0, int32_t c1, int32_t c2) const 34254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 34354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project ::iterators0032(this, it, c0, c1, c2); 34454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 34554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#else 34654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid compute_iterators_t::iterators0032(int32_t* it, 34754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t c0, int32_t c1, int32_t c2) const 34854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 34954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int s = m_area_scale - 16; 35054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dc01 = (c1 - c0)>>s; 35154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t dc02 = (c2 - c0)>>s; 35254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // 16.16 x 16.16 == 32.32 35354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int64_t dcdx = gglMulii(dc01, m_dy02) + gglMulii(dc02, m_dy10); 35454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int64_t dcdy = gglMulii(dc02, m_dx01) + gglMulii(dc01, m_dx20); 35554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t c = (c0<<16) - ((dcdx*m_x0 + dcdy*m_y0)>>4); 35654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[ 0] = c; 35754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[ 1] = dcdx; 35854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project it[ 2] = dcdy; 35954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 36054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#endif 36154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 36254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 36354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 36454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline int32_t clampZ(GLfixed z) CONST; 36554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectint32_t clampZ(GLfixed z) { 36654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project z = (z & ~(z>>31)); 36754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (z >= 0x10000) 36854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project z = 0xFFFF; 36954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return z; 37054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 37154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 37254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic __attribute__((noinline)) 37354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid fetch_texcoord_impl(ogles_context_t* c, 37454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 37554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 37654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* const vtx[3] = { v0, v1, v2 }; 37754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project array_t const * const texcoordArray = c->arrays.texture; 37854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 37954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { 38054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(c->rasterizer.state.texture[i].enable)) 38154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project continue; 38254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 38354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (int j=0 ; j<3 ; j++) { 38454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* const v = vtx[j]; 38554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (v->flags & vertex_t::TT) 38654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project continue; 38754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 38854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // NOTE: here we could compute automatic texgen 38954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // such as sphere/cube maps, instead of fetching them 39054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // from the textcoord array. 39154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 39254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vec4_t& coords = v->texture[i]; 39354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLubyte* tp = texcoordArray[i].element( 39454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->index & vertex_cache_t::INDEX_MASK); 39554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project texcoordArray[i].fetch(c, coords.v, tp); 39654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 39754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // transform texture coordinates... 39854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project coords.Q = 0x10000; 39954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const transform_t& tr = c->transforms.texture[i].transform; 40054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(tr.ops)) { 40154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.tex_transform[i](&tr, &coords, &coords); 40254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 40354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 40454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // divide by Q 40554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLfixed q = coords.Q; 40654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(q != 0x10000)) { 40754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int32_t qinv = gglRecip28(q); 40854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project coords.S = gglMulx(coords.S, qinv, 28); 40954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project coords.T = gglMulx(coords.T, qinv, 28); 41054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 41154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 41254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 41354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v0->flags |= vertex_t::TT; 41454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v1->flags |= vertex_t::TT; 41554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v2->flags |= vertex_t::TT; 41654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 41754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 41854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectinline void fetch_texcoord(ogles_context_t* c, 41954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 42054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 42154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t enables = c->rasterizer.state.enables; 42254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!(enables & GGL_ENABLE_TMUS)) 42354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; 42454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 42554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Fetch & transform texture coordinates... 42654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_likely(v0->flags & v1->flags & v2->flags & vertex_t::TT)) { 42754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // already done for all three vertices, bail... 42854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; 42954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 43054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project fetch_texcoord_impl(c, v0, v1, v2); 43154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 43254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 43354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 43454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#if 0 43554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark - 43654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark Point 43754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#endif 43854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 43954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid primitive_nop_point(ogles_context_t*, vertex_t*) { 44054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 44154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 44254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid primitive_point(ogles_context_t* c, vertex_t* v) 44354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 44454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // lighting & clamping... 44554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t enables = c->rasterizer.state.enables; 44654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 44754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(!(v->flags & vertex_t::LIT))) { 44854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (c->lighting.enable) { 44954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightVertex(c, v); 45054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 45154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->flags |= vertex_t::LIT; 45254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLvoid* cp = c->arrays.color.element( 45354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->index & vertex_cache_t::INDEX_MASK); 45454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.color.fetch(c, v->color.v, cp); 45554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 45654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_FOG) { 45754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v->fog = c->fog.fog(c, v->window.z); 45854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 45954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 46054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 46154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // XXX: we don't need to do that each-time 46254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // if color array and lighting not enabled 46354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.color4xv(c, v->color.v); 46454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 46554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // XXX: look into ES point-sprite extension 46654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_TMUS) { 46754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project fetch_texcoord(c, v,v,v); 46854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { 46954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!c->rasterizer.state.texture[i].enable) 47054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project continue; 47154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t itt[8]; 47254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[1] = itt[2] = itt[4] = itt[5] = 0; 47354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[6] = itt[7] = 16; // XXX: check that 47454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (c->rasterizer.state.texture[i].s_wrap == GGL_CLAMP) { 47554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int width = c->textures.tmu[i].texture->surface.width; 47654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[0] = v->texture[i].S * width; 47754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[6] = 0; 47854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 47954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (c->rasterizer.state.texture[i].t_wrap == GGL_CLAMP) { 48054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int height = c->textures.tmu[i].texture->surface.height; 48154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[3] = v->texture[i].T * height; 48254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[7] = 0; 48354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 48454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.texCoordGradScale8xv(c, i, itt); 48554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 48654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 48754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 48854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_DEPTH_TEST) { 48954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t itz[3]; 49054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itz[0] = clampZ(v->window.z) * 0x00010001; 49154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itz[1] = itz[2] = 0; 49254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.zGrad3xv(c, itz); 49354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 49454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 49554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_FOG) { 49654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GLfixed itf[3]; 49754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itf[0] = v->fog; 49854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itf[1] = itf[2] = 0; 49954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.fogGrad3xv(c, itf); 50054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 50154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 50254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Render our point... 50354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.pointx(c, v->window.v, c->point.size); 50454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 50554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 50654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 50754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#if 0 50854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark - 50954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark Line 51054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#endif 51154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 51254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid primitive_nop_line(ogles_context_t*, vertex_t*, vertex_t*) { 51354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 51454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 51554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid primitive_line(ogles_context_t* c, vertex_t* v0, vertex_t* v1) 51654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 51754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // This is a cheezy implementation of line drawing that 51854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // uses 2 triangles per line. 51954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // That said, how often line drawing is used? 52054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 52154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // get texture coordinates 52254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project fetch_texcoord(c, v0, v1, v1); 52354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 52454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // light/shade the vertices first (they're copied below) 52554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightTriangle(c, v0, v1, v1); 52654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 52754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t v[4]; 52854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v[0] = *v0; 52954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v[1] = *v1; 53054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v0 = &v[0]; 53154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project v1 = &v[1]; 53254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 53354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // clip the line if needed 53454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely((v0->flags | v1->flags) & vertex_t::CLIP_ALL)) { 53554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int count = clip_line(c, v0, v1); 53654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(count == 0)) 53754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; 53854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 53954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 54054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // compute iterators... 54154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t enables = c->rasterizer.state.enables; 54254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t mask = GGL_ENABLE_TMUS | 54354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_SMOOTH | 54454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_W | 54554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_FOG | 54654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_DEPTH_TEST; 54754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 54854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(enables & mask)) { 54954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lerp.initTriangle(v0, v1, v1); 55054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp_triangle(c, v0, v1, v1); 55154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 55254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 55354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // render our line 55454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.linex(c, v0->window.v, v1->window.v, c->line.width); 55554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 55654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 55754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ---------------------------------------------------------------------------- 55854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#if 0 55954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark - 56054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#pragma mark Triangle 56154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project#endif 56254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 56354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid primitive_nop_triangle(ogles_context_t* c, 56454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) { 56554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 56654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 56754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid primitive_clip_triangle(ogles_context_t* c, 56854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 56954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 57054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project uint32_t cc = (v0->flags | v1->flags | v2->flags) & vertex_t::CLIP_ALL; 57154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_likely(!cc)) { 57254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // code below must be as optimized as possible, this is the 57354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // common code path. 57454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 57554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // This triangle is not clipped, test if it's culled 57654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // unclipped triangle... 57754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lerp.initTriangle(v0, v1, v2); 57854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (cull_triangle(c, v0, v1, v2)) 57954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // culled! 58054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 58154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Fetch all texture coordinates if needed 58254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project fetch_texcoord(c, v0, v1, v2); 58354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 58454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // light (or shade) our triangle! 58554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightTriangle(c, v0, v1, v2); 58654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 58754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project triangle(c, v0, v1, v2); 58854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; 58954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 59054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 59154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // The assumption here is that we're not going to clip very often, 59254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // and even more rarely will we clip a triangle that ends up 59354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // being culled out. So it's okay to light the vertices here, even though 59454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // in a few cases we won't render the triangle (if culled). 59554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 59654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Fetch texture coordinates... 59754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project fetch_texcoord(c, v0, v1, v2); 59854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 59954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // light (or shade) our triangle! 60054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lighting.lightTriangle(c, v0, v1, v2); 60154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 60254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project clip_triangle(c, v0, v1, v2); 60354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 60454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 60554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project// ----------------------------------------------------------------------- 60654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 60754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid triangle(ogles_context_t* c, 60854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 60954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 61054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // compute iterators... 61154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t enables = c->rasterizer.state.enables; 61254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t mask = GGL_ENABLE_TMUS | 61354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_SMOOTH | 61454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_W | 61554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_FOG | 61654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GGL_ENABLE_DEPTH_TEST; 61754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 61854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_likely(enables & mask)) 61954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp_triangle(c, v0, v1, v2); 62054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 62154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.trianglex(c, v0->window.v, v1->window.v, v2->window.v); 62254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 62354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 62454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid lerp_triangle(ogles_context_t* c, 62554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 62654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 62754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t enables = c->rasterizer.state.enables; 62854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lerp.initLerp(v0, enables); 62954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 63054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // set up texture iterators 63154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_TMUS) { 63254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_W) { 63354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp_texcoords_w(c, v0, v1, v2); 63454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 63554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp_texcoords(c, v0, v1, v2); 63654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 63754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 63854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 63954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // set up the color iterators 64054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const compute_iterators_t& lerp = c->lerp; 64154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_SMOOTH) { 64254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GLfixed itc[12]; 64354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (int i=0 ; i<4 ; i++) { 64454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLcolor c0 = v0->color.v[i] * 255; 64554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLcolor c1 = v1->color.v[i] * 255; 64654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLcolor c2 = v2->color.v[i] * 255; 64754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp.iterators1616(&itc[i*3], c0, c1, c2); 64854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 64954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.colorGrad12xv(c, itc); 65054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 65154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 65254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (enables & GGL_ENABLE_DEPTH_TEST) { 65354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t itz[3]; 65454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int32_t v0z = clampZ(v0->window.z); 65554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int32_t v1z = clampZ(v1->window.z); 65654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int32_t v2z = clampZ(v2->window.z); 65754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp.iterators0032(itz, v0z, v1z, v2z); 65854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(c->polygonOffset.enable)) { 65954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed factor = c->polygonOffset.factor; 66054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed units = c->polygonOffset.units; 66154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t maxDepthSlope = max(abs(itz[1]), abs(itz[2])); 66254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t offset = (int64_t(maxDepthSlope)*factor + 66354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project (int64_t(units) << 16)) >> 16; 66454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itz[0] += offset; // XXX: this can cause overflows 66554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 66654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.zGrad3xv(c, itz); 66754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 66854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 66954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(enables & GGL_ENABLE_FOG)) { 67054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GLfixed itf[3]; 67154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project lerp.iterators1616(itf, v0->fog, v1->fog, v2->fog); 67254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.fogGrad3xv(c, itf); 67354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 67454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 67554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 67654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 67754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 67854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectint compute_lod(ogles_context_t* c, int i, 67954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s0, int32_t t0, int32_t s1, int32_t t1, int32_t s2, int32_t t2) 68054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 68154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Compute mipmap level / primitive 68254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // rho = sqrt( texelArea / area ) 68354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // lod = log2( rho ) 68454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // lod = log2( texelArea / area ) / 2 68554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // lod = (log2( texelArea ) - log2( area )) / 2 68654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const compute_iterators_t& lerp = c->lerp; 68754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GGLcoord area = abs(lerp.area()); 68854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int w = c->textures.tmu[i].texture->surface.width; 68954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int h = c->textures.tmu[i].texture->surface.height; 69054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int shift = 16 + (16 - TRI_FRACTION_BITS); 69154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t texelArea = abs( gglMulx(s1-s0, t2-t0, shift) - 69254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project gglMulx(s2-s0, t1-t0, shift) )*w*h; 69354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int log2TArea = (32-TRI_FRACTION_BITS -1) - gglClz(texelArea); 69454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int log2Area = (32-TRI_FRACTION_BITS*2-1) - gglClz(area); 69554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int lod = (log2TArea - log2Area + 1) >> 1; 69654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return lod; 69754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 69854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 69954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid lerp_texcoords(ogles_context_t* c, 70054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 70154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 70254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const compute_iterators_t& lerp = c->lerp; 70354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t itt[8] __attribute__((aligned(16))); 70454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { 70554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const texture_t& tmu = c->rasterizer.state.texture[i]; 70654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!tmu.enable) 70754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project continue; 70854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 70954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // compute the jacobians using block floating-point 71054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s0 = v0->texture[i].S; 71154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t t0 = v0->texture[i].T; 71254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s1 = v1->texture[i].S; 71354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t t1 = v1->texture[i].T; 71454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s2 = v2->texture[i].S; 71554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t t2 = v2->texture[i].T; 71654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 71754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLenum min_filter = c->textures.tmu[i].texture->min_filter; 71854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(min_filter >= GL_NEAREST_MIPMAP_NEAREST)) { 71954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int lod = compute_lod(c, i, s0, t0, s1, t1, s2, t2); 72054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.bindTextureLod(c, i, 72154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project &c->textures.tmu[i].texture->mip(lod)); 72254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 72354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 72454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // premultiply (s,t) when clampling 72554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (tmu.s_wrap == GGL_CLAMP) { 72654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int width = tmu.surface.width; 72754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s0 *= width; 72854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s1 *= width; 72954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s2 *= width; 73054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 73154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (tmu.t_wrap == GGL_CLAMP) { 73254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int height = tmu.surface.height; 73354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t0 *= height; 73454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t1 *= height; 73554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t2 *= height; 73654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 73754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[6] = -lerp.iteratorsScale(itt+0, s0, s1, s2); 73854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[7] = -lerp.iteratorsScale(itt+3, t0, t1, t2); 73954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.texCoordGradScale8xv(c, i, itt); 74054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 74154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 74254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 74354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid lerp_texcoords_w(ogles_context_t* c, 74454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 74554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 74654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const compute_iterators_t& lerp = c->lerp; 74754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t itt[8] __attribute__((aligned(16))); 74854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t itw[3]; 74954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 75054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // compute W's scale to 2.30 75154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t w0 = v0->window.w; 75254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t w1 = v1->window.w; 75354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t w2 = v2->window.w; 75454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int wscale = 32 - gglClz(w0|w1|w2); 75554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 75654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // compute the jacobian using block floating-point 75754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int sc = lerp.iteratorsScale(itw, w0, w1, w2); 75854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project sc += wscale - 16; 75954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.wGrad3xv(c, itw); 76054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 76154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { 76254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const texture_t& tmu = c->rasterizer.state.texture[i]; 76354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (!tmu.enable) 76454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project continue; 76554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 76654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // compute the jacobians using block floating-point 76754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s0 = v0->texture[i].S; 76854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t t0 = v0->texture[i].T; 76954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s1 = v1->texture[i].S; 77054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t t1 = v1->texture[i].T; 77154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t s2 = v2->texture[i].S; 77254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int32_t t2 = v2->texture[i].T; 77354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 77454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLenum min_filter = c->textures.tmu[i].texture->min_filter; 77554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(min_filter >= GL_NEAREST_MIPMAP_NEAREST)) { 77654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project int lod = compute_lod(c, i, s0, t0, s1, t1, s2, t2); 77754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.bindTextureLod(c, i, 77854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project &c->textures.tmu[i].texture->mip(lod)); 77954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 78054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 78154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // premultiply (s,t) when clampling 78254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (tmu.s_wrap == GGL_CLAMP) { 78354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int width = tmu.surface.width; 78454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s0 *= width; 78554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s1 *= width; 78654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s2 *= width; 78754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 78854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (tmu.t_wrap == GGL_CLAMP) { 78954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int height = tmu.surface.height; 79054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t0 *= height; 79154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t1 *= height; 79254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t2 *= height; 79354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 79454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 79554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s0 = gglMulx(s0, w0, wscale); 79654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t0 = gglMulx(t0, w0, wscale); 79754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s1 = gglMulx(s1, w1, wscale); 79854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t1 = gglMulx(t1, w1, wscale); 79954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s2 = gglMulx(s2, w2, wscale); 80054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project t2 = gglMulx(t2, w2, wscale); 80154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 80254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[6] = sc - lerp.iteratorsScale(itt+0, s0, s1, s2); 80354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project itt[7] = sc - lerp.iteratorsScale(itt+3, t0, t1, t2); 80454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->rasterizer.procs.texCoordGradScale8xv(c, i, itt); 80554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 80654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 80754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 80854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 80954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 81054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectbool cull_triangle(ogles_context_t* c, vertex_t* v0, vertex_t* v1, vertex_t* v2) 81154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 81254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_likely(c->cull.enable)) { 81354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLenum winding = (c->lerp.area() > 0) ? GL_CW : GL_CCW; 81454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLenum face = (winding == c->cull.frontFace) ? GL_FRONT : GL_BACK; 81554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (face == c->cull.cullFace) 81654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return true; // culled! 81754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 81854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return false; 81954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 82054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 82154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 82254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source ProjectGLfixed frustumPlaneDist(int plane, const vec4_t& s) 82354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 82454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed d = s.v[ plane >> 1 ]; 82554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return ((plane & 1) ? (s.w - d) : (s.w + d)); 82654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 82754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 82854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectstatic inline 82954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectint32_t clipDivide(GLfixed a, GLfixed b) { 83054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // returns a 4.28 fixed-point 83154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return gglMulDivi(1LU<<28, a, b); 83254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 83354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 83454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectvoid clip_triangle(ogles_context_t* c, 83554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* v0, vertex_t* v1, vertex_t* v2) 83654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 83754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project uint32_t all_cc = (v0->flags | v1->flags | v2->flags) & vertex_t::CLIP_ALL; 83854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 83954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t *p0, *p1, *p2; 84054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int MAX_CLIPPING_PLANES = 6 + OGLES_MAX_CLIP_PLANES; 84154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const int MAX_VERTICES = 3; 84254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 84354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // Temporary buffer to hold the new vertices. Each plane can add up to 84454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // two new vertices (because the polygon is convex). 84554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // We need one extra element, to handle an overflow case when 84654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // the polygon degenerates into something non convex. 84754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t buffer[MAX_CLIPPING_PLANES * 2 + 1]; // ~3KB 84854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* buf = buffer; 84954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 85054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // original list of vertices (polygon to clip, in fact this 85154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // function works with an arbitrary polygon). 85254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* in[3] = { v0, v1, v2 }; 85354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 85454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // output lists (we need 2, which we use back and forth) 85554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // (maximum outpout list's size is MAX_CLIPPING_PLANES + MAX_VERTICES) 85654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // 2 more elements for overflow when non convex polygons. 85754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* out[2][MAX_CLIPPING_PLANES + MAX_VERTICES + 2]; 85854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int outi = 0; 85954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 86054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // current input list 86154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t** ivl = in; 86254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 86354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // 3 input vertices, 0 in the output list, first plane 86454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int ic = 3; 86554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 86654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // User clip-planes first, the clipping is always done in eye-coordinate 86754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // this is basically the same algorithm than for the view-volume 86854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // clipping, except for the computation of the distance (vertex, plane) 86954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // and the fact that we need to compute the eye-coordinates of each 87054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // new vertex we create. 87154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 87254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(all_cc & vertex_t::USER_CLIP_ALL)) 87354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project { 87454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int plane = 0; 87554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project uint32_t cc = (all_cc & vertex_t::USER_CLIP_ALL) >> 8; 87654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project do { 87754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (cc & 1) { 87854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // pointers to our output list (head and current) 87954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t** const ovl = &out[outi][0]; 88054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t** output = ovl; 88154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int oc = 0; 88254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int sentinel = 0; 88354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // previous vertice, compute distance to the plane 88454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* s = ivl[ic-1]; 88554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const vec4_t& equation = c->clipPlanes.plane[plane].equation; 88654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GLfixed sd = dot4(equation.v, s->eye.v); 88754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // clip each vertice against this plane... 88854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (unsigned int i=0 ; i<ic ; i++) { 88954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* p = ivl[i]; 89054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed pd = dot4(equation.v, p->eye.v); 89154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (sd >= 0) { 89254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 89354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both inside 89454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = p; 89554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 89654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 89754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s inside, p outside (exiting) 89854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(sd, sd-pd); 89954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipEye(c, buf, t, p, s); 90054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = buf++; 90154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 90254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (++sentinel >= 3) 90354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // non-convex polygon! 90454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 90554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 90654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 90754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s outside (entering) 90854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd) { 90954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(pd, pd-sd); 91054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipEye(c, buf, t, s, p); 91154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = buf++; 91254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 91354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (++sentinel >= 3) 91454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // non-convex polygon! 91554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 91654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = p; 91754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 91854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 91954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both outside 92054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 92154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 92254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s = p; 92354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project sd = pd; 92454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 92554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // output list become the new input list 92654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (oc<3) 92754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // less than 3 vertices left? we're done! 92854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project ivl = ovl; 92954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project ic = oc; 93054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project outi = 1-outi; 93154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 93254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project cc >>= 1; 93354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project plane++; 93454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } while (cc); 93554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 93654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 93754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // frustum clip-planes 93854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (all_cc & vertex_t::FRUSTUM_CLIP_ALL) 93954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project { 94054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int plane = 0; 94154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project uint32_t cc = all_cc & vertex_t::FRUSTUM_CLIP_ALL; 94254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project do { 94354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (cc & 1) { 94454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // pointers to our output list (head and current) 94554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t** const ovl = &out[outi][0]; 94654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t** output = ovl; 94754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int oc = 0; 94854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int sentinel = 0; 94954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // previous vertice, compute distance to the plane 95054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* s = ivl[ic-1]; 95154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project GLfixed sd = frustumPlaneDist(plane, s->clip); 95254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // clip each vertice against this plane... 95354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (unsigned int i=0 ; i<ic ; i++) { 95454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project vertex_t* p = ivl[i]; 95554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed pd = frustumPlaneDist(plane, p->clip); 95654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (sd >= 0) { 95754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 95854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both inside 95954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = p; 96054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 96154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 96254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s inside, p outside (exiting) 96354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(sd, sd-pd); 96454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipVertex(c, buf, t, p, s); 96554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = buf++; 96654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 96754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (++sentinel >= 3) 96854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // non-convex polygon! 96954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 97054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 97154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 97254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s outside (entering) 97354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd) { 97454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(pd, pd-sd); 97554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipVertex(c, buf, t, s, p); 97654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = buf++; 97754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 97854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (++sentinel >= 3) 97954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // non-convex polygon! 98054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 98154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project *output++ = p; 98254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project oc++; 98354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 98454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both outside 98554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 98654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 98754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project s = p; 98854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project sd = pd; 98954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 99054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // output list become the new input list 99154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (oc<3) 99254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return; // less than 3 vertices left? we're done! 99354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project ivl = ovl; 99454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project ic = oc; 99554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project outi = 1-outi; 99654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 99754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project cc >>= 1; 99854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project plane++; 99954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } while (cc); 100054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 100154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 100254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // finally we can render our triangles... 100354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project p0 = ivl[0]; 100454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project p1 = ivl[1]; 100554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project for (unsigned int i=2 ; i<ic ; i++) { 100654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project p2 = ivl[i]; 100754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->lerp.initTriangle(p0, p1, p2); 100854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (cull_triangle(c, p0, p1, p2)) { 100954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project p1 = p2; 101054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project continue; // culled! 101154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 101254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project triangle(c, p0, p1, p2); 101354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project p1 = p2; 101454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 101554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 101654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 101754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Projectunsigned int clip_line(ogles_context_t* c, vertex_t* s, vertex_t* p) 101854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project{ 101954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const uint32_t all_cc = (s->flags | p->flags) & vertex_t::CLIP_ALL; 102054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 102154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (ggl_unlikely(all_cc & vertex_t::USER_CLIP_ALL)) 102254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project { 102354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int plane = 0; 102454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project uint32_t cc = (all_cc & vertex_t::USER_CLIP_ALL) >> 8; 102554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project do { 102654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (cc & 1) { 102754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const vec4_t& equation = c->clipPlanes.plane[plane].equation; 102854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed sd = dot4(equation.v, s->eye.v); 102954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed pd = dot4(equation.v, p->eye.v); 103054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (sd >= 0) { 103154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 103254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both inside 103354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 103454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s inside, p outside (exiting) 103554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(sd, sd-pd); 103654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipEye(c, p, t, p, s); 103754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 103854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 103954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 104054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s outside (entering) 104154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd) { 104254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(pd, pd-sd); 104354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipEye(c, s, t, s, p); 104454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 104554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 104654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both outside 104754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return 0; 104854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 104954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 105054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 105154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project cc >>= 1; 105254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project plane++; 105354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } while (cc); 105454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 105554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 105654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // frustum clip-planes 105754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (all_cc & vertex_t::FRUSTUM_CLIP_ALL) 105854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project { 105954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project unsigned int plane = 0; 106054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project uint32_t cc = all_cc & vertex_t::FRUSTUM_CLIP_ALL; 106154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project do { 106254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (cc & 1) { 106354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed sd = frustumPlaneDist(plane, s->clip); 106454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed pd = frustumPlaneDist(plane, p->clip); 106554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (sd >= 0) { 106654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 106754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both inside 106854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 106954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s inside, p outside (exiting) 107054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(sd, sd-pd); 107154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipVertex(c, p, t, p, s); 107254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 107354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 107454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd >= 0) { 107554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // s outside (entering) 107654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project if (pd) { 107754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project const GLfixed t = clipDivide(pd, pd-sd); 107854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project c->arrays.clipVertex(c, s, t, s, p); 107954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 108054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } else { 108154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project // both outside 108254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return 0; 108354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 108454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 108554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 108654b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project cc >>= 1; 108754b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project plane++; 108854b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } while (cc); 108954b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project } 109054b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 109154b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project return 2; 109254b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project} 109354b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 109454b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project 109554b6cfa9a9e5b861a9930af873580d6dc20f773The Android Open Source Project}; // namespace android 1096