draw_pt_fetch.c revision da8312a1cf73d0777d51c63148ee090a9acace8b
1/************************************************************************** 2 * 3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "pipe/p_util.h" 29#include "draw/draw_context.h" 30#include "draw/draw_private.h" 31#include "draw/draw_vbuf.h" 32#include "draw/draw_vertex.h" 33#include "draw/draw_pt.h" 34#include "translate/translate.h" 35#include "translate/translate_cache.h" 36 37 38struct pt_fetch { 39 struct draw_context *draw; 40 41 struct translate *translate; 42 43 unsigned vertex_size; 44 boolean need_edgeflags; 45 46 struct translate_cache *cache; 47}; 48 49/* Perform the fetch from API vertex elements & vertex buffers, to a 50 * contiguous set of float[4] attributes as required for the 51 * vertex_shader->run_linear() method. 52 * 53 * This is used in all cases except pure passthrough 54 * (draw_pt_fetch_emit.c) which has its own version to translate 55 * directly to hw vertices. 56 * 57 */ 58void draw_pt_fetch_prepare( struct pt_fetch *fetch, 59 unsigned vertex_size ) 60{ 61 struct draw_context *draw = fetch->draw; 62 unsigned i, nr = 0; 63 unsigned dst_offset = 0; 64 struct translate_key key; 65 66 fetch->vertex_size = vertex_size; 67 68 memset(&key, 0, sizeof(key)); 69 70 /* Always emit/leave space for a vertex header. 71 * 72 * It's worth considering whether the vertex headers should contain 73 * a pointer to the 'data', rather than having it inline. 74 * Something to look at after we've fully switched over to the pt 75 * paths. 76 */ 77 { 78 /* Need to set header->vertex_id = 0xffff somehow. 79 */ 80 key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT; 81 key.element[nr].input_buffer = draw->pt.nr_vertex_buffers; 82 key.element[nr].input_offset = 0; 83 key.element[nr].output_format = PIPE_FORMAT_R32_FLOAT; 84 key.element[nr].output_offset = dst_offset; 85 dst_offset += 1 * sizeof(float); 86 nr++; 87 88 89 /* Just leave the clip[] array untouched. 90 */ 91 dst_offset += 4 * sizeof(float); 92 } 93 94 95 for (i = 0; i < draw->pt.nr_vertex_elements; i++) { 96 key.element[nr].input_format = draw->pt.vertex_element[i].src_format; 97 key.element[nr].input_buffer = draw->pt.vertex_element[i].vertex_buffer_index; 98 key.element[nr].input_offset = draw->pt.vertex_element[i].src_offset; 99 key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 100 key.element[nr].output_offset = dst_offset; 101 102 dst_offset += 4 * sizeof(float); 103 nr++; 104 } 105 106 assert(dst_offset <= vertex_size); 107 108 key.nr_elements = nr; 109 key.output_stride = vertex_size; 110 111 112 if (!fetch->translate || 113 memcmp(&fetch->translate->key, &key, sizeof(key)) != 0) 114 { 115 fetch->translate = translate_cache_find(fetch->cache, &key); 116 117 { 118 static struct vertex_header vh = { 0, 1, 0, 0xffff }; 119 fetch->translate->set_buffer(fetch->translate, 120 draw->pt.nr_vertex_buffers, 121 &vh, 122 0); 123 } 124 } 125 126 fetch->need_edgeflags = ((draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL || 127 draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL) && 128 draw->pt.user.edgeflag); 129} 130 131 132 133 134void draw_pt_fetch_run( struct pt_fetch *fetch, 135 const unsigned *elts, 136 unsigned count, 137 char *verts ) 138{ 139 struct draw_context *draw = fetch->draw; 140 struct translate *translate = fetch->translate; 141 unsigned i; 142 143 for (i = 0; i < draw->pt.nr_vertex_buffers; i++) { 144 translate->set_buffer(translate, 145 i, 146 ((char *)draw->pt.user.vbuffer[i] + 147 draw->pt.vertex_buffer[i].buffer_offset), 148 draw->pt.vertex_buffer[i].pitch ); 149 } 150 151 translate->run_elts( translate, 152 elts, 153 count, 154 verts ); 155 156 /* Edgeflags are hard to fit into a translate program, populate 157 * them separately if required. In the setup above they are 158 * defaulted to one, so only need this if there is reason to change 159 * that default: 160 */ 161 if (fetch->need_edgeflags) { 162 for (i = 0; i < count; i++) { 163 struct vertex_header *vh = (struct vertex_header *)(verts + i * fetch->vertex_size); 164 vh->edgeflag = draw_pt_get_edgeflag( draw, elts[i] ); 165 } 166 } 167} 168 169 170struct pt_fetch *draw_pt_fetch_create( struct draw_context *draw ) 171{ 172 struct pt_fetch *fetch = CALLOC_STRUCT(pt_fetch); 173 if (!fetch) 174 return NULL; 175 176 fetch->draw = draw; 177 fetch->cache = translate_cache_create(); 178 if (!fetch->cache) { 179 FREE(fetch); 180 return NULL; 181 } 182 183 return fetch; 184} 185 186void draw_pt_fetch_destroy( struct pt_fetch *fetch ) 187{ 188 translate_cache_destroy(fetch->cache); 189 190 FREE(fetch); 191} 192 193