brw_sf.c revision 08f030baec3d13805c5800183550d8ad88ed8881
1/* 2 Copyright (C) Intel Corp. 2006. All Rights Reserved. 3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to 4 develop this 3D driver. 5 6 Permission is hereby granted, free of charge, to any person obtaining 7 a 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, sublicense, 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 16 portions of the Software. 17 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 26 **********************************************************************/ 27 /* 28 * Authors: 29 * Keith Whitwell <keith@tungstengraphics.com> 30 */ 31 32 33#include "main/glheader.h" 34#include "main/macros.h" 35#include "main/enums.h" 36 37#include "intel_batchbuffer.h" 38 39#include "brw_defines.h" 40#include "brw_context.h" 41#include "brw_eu.h" 42#include "brw_util.h" 43#include "brw_sf.h" 44#include "brw_state.h" 45 46#include "glsl/ralloc.h" 47 48static void compile_sf_prog( struct brw_context *brw, 49 struct brw_sf_prog_key *key ) 50{ 51 struct intel_context *intel = &brw->intel; 52 struct brw_sf_compile c; 53 const GLuint *program; 54 void *mem_ctx; 55 GLuint program_size; 56 GLuint i; 57 58 memset(&c, 0, sizeof(c)); 59 60 mem_ctx = ralloc_context(NULL); 61 /* Begin the compilation: 62 */ 63 brw_init_compile(brw, &c.func, mem_ctx); 64 65 c.key = *key; 66 c.nr_attrs = brw_count_bits(c.key.attrs); 67 c.nr_attr_regs = (c.nr_attrs+1)/2; 68 c.nr_setup_attrs = brw_count_bits(c.key.attrs); 69 c.nr_setup_regs = (c.nr_setup_attrs+1)/2; 70 brw_compute_vue_map(&c.vue_map, intel, c.key.nr_userclip, 71 c.key.do_twoside_color, c.key.attrs); 72 c.urb_entry_read_offset = brw_sf_compute_urb_entry_read_offset(intel); 73 74 c.prog_data.urb_read_length = c.nr_attr_regs; 75 c.prog_data.urb_entry_size = c.nr_setup_regs * 2; 76 77 /* Which primitive? Or all three? 78 */ 79 switch (key->primitive) { 80 case SF_TRIANGLES: 81 c.nr_verts = 3; 82 brw_emit_tri_setup( &c, GL_TRUE ); 83 break; 84 case SF_LINES: 85 c.nr_verts = 2; 86 brw_emit_line_setup( &c, GL_TRUE ); 87 break; 88 case SF_POINTS: 89 c.nr_verts = 1; 90 if (key->do_point_sprite) 91 brw_emit_point_sprite_setup( &c, GL_TRUE ); 92 else 93 brw_emit_point_setup( &c, GL_TRUE ); 94 break; 95 case SF_UNFILLED_TRIS: 96 c.nr_verts = 3; 97 brw_emit_anyprim_setup( &c ); 98 break; 99 default: 100 assert(0); 101 return; 102 } 103 104 /* get the program 105 */ 106 program = brw_get_program(&c.func, &program_size); 107 108 if (unlikely(INTEL_DEBUG & DEBUG_SF)) { 109 printf("sf:\n"); 110 for (i = 0; i < program_size / sizeof(struct brw_instruction); i++) 111 brw_disasm(stdout, &((struct brw_instruction *)program)[i], 112 intel->gen); 113 printf("\n"); 114 } 115 116 brw_upload_cache(&brw->cache, BRW_SF_PROG, 117 &c.key, sizeof(c.key), 118 program, program_size, 119 &c.prog_data, sizeof(c.prog_data), 120 &brw->sf.prog_offset, &brw->sf.prog_data); 121 ralloc_free(mem_ctx); 122} 123 124/* Calculate interpolants for triangle and line rasterization. 125 */ 126static void upload_sf_prog(struct brw_context *brw) 127{ 128 struct gl_context *ctx = &brw->intel.ctx; 129 struct brw_sf_prog_key key; 130 131 memset(&key, 0, sizeof(key)); 132 133 /* Populate the key, noting state dependencies: 134 */ 135 /* CACHE_NEW_VS_PROG */ 136 key.attrs = brw->vs.prog_data->outputs_written; 137 138 /* BRW_NEW_REDUCED_PRIMITIVE */ 139 switch (brw->intel.reduced_primitive) { 140 case GL_TRIANGLES: 141 /* NOTE: We just use the edgeflag attribute as an indicator that 142 * unfilled triangles are active. We don't actually do the 143 * edgeflag testing here, it is already done in the clip 144 * program. 145 */ 146 if (key.attrs & BITFIELD64_BIT(VERT_RESULT_EDGE)) 147 key.primitive = SF_UNFILLED_TRIS; 148 else 149 key.primitive = SF_TRIANGLES; 150 break; 151 case GL_LINES: 152 key.primitive = SF_LINES; 153 break; 154 case GL_POINTS: 155 key.primitive = SF_POINTS; 156 break; 157 } 158 159 /* _NEW_TRANSFORM */ 160 key.nr_userclip = brw_count_bits(ctx->Transform.ClipPlanesEnabled); 161 162 /* _NEW_POINT */ 163 key.do_point_sprite = ctx->Point.PointSprite; 164 if (key.do_point_sprite) { 165 int i; 166 167 for (i = 0; i < 8; i++) { 168 if (ctx->Point.CoordReplace[i]) 169 key.point_sprite_coord_replace |= (1 << i); 170 } 171 } 172 key.sprite_origin_lower_left = (ctx->Point.SpriteOrigin == GL_LOWER_LEFT); 173 /* _NEW_LIGHT */ 174 key.do_flat_shading = (ctx->Light.ShadeModel == GL_FLAT); 175 key.do_twoside_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide); 176 177 /* _NEW_POLYGON */ 178 if (key.do_twoside_color) { 179 /* If we're rendering to a FBO, we have to invert the polygon 180 * face orientation, just as we invert the viewport in 181 * sf_unit_create_from_key(). ctx->DrawBuffer->Name will be 182 * nonzero if we're rendering to such an FBO. 183 */ 184 key.frontface_ccw = (ctx->Polygon.FrontFace == GL_CCW) ^ (ctx->DrawBuffer->Name != 0); 185 } 186 187 if (!brw_search_cache(&brw->cache, BRW_SF_PROG, 188 &key, sizeof(key), 189 &brw->sf.prog_offset, &brw->sf.prog_data)) { 190 compile_sf_prog( brw, &key ); 191 } 192} 193 194 195const struct brw_tracked_state brw_sf_prog = { 196 .dirty = { 197 .mesa = (_NEW_HINT | _NEW_LIGHT | _NEW_POLYGON | _NEW_POINT | _NEW_TRANSFORM), 198 .brw = (BRW_NEW_REDUCED_PRIMITIVE), 199 .cache = CACHE_NEW_VS_PROG 200 }, 201 .prepare = upload_sf_prog 202}; 203 204