brw_sf.c revision 4a1fb81902a7863d5dfe304e5e4ca2c631159be1
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, idx; 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 /* Construct map from attribute number to position in the vertex. 78 */ 79 for (i = idx = 0; i < VERT_RESULT_MAX; i++) { 80 if (c.key.attrs & BITFIELD64_BIT(i)) { 81 c.attr_to_idx[i] = idx; 82 c.idx_to_attr[idx] = i; 83 idx++; 84 } 85 } 86 87 /* Which primitive? Or all three? 88 */ 89 switch (key->primitive) { 90 case SF_TRIANGLES: 91 c.nr_verts = 3; 92 brw_emit_tri_setup( &c, GL_TRUE ); 93 break; 94 case SF_LINES: 95 c.nr_verts = 2; 96 brw_emit_line_setup( &c, GL_TRUE ); 97 break; 98 case SF_POINTS: 99 c.nr_verts = 1; 100 if (key->do_point_sprite) 101 brw_emit_point_sprite_setup( &c, GL_TRUE ); 102 else 103 brw_emit_point_setup( &c, GL_TRUE ); 104 break; 105 case SF_UNFILLED_TRIS: 106 c.nr_verts = 3; 107 brw_emit_anyprim_setup( &c ); 108 break; 109 default: 110 assert(0); 111 return; 112 } 113 114 /* get the program 115 */ 116 program = brw_get_program(&c.func, &program_size); 117 118 if (unlikely(INTEL_DEBUG & DEBUG_SF)) { 119 printf("sf:\n"); 120 for (i = 0; i < program_size / sizeof(struct brw_instruction); i++) 121 brw_disasm(stdout, &((struct brw_instruction *)program)[i], 122 intel->gen); 123 printf("\n"); 124 } 125 126 brw_upload_cache(&brw->cache, BRW_SF_PROG, 127 &c.key, sizeof(c.key), 128 program, program_size, 129 &c.prog_data, sizeof(c.prog_data), 130 &brw->sf.prog_offset, &brw->sf.prog_data); 131 ralloc_free(mem_ctx); 132} 133 134/* Calculate interpolants for triangle and line rasterization. 135 */ 136static void upload_sf_prog(struct brw_context *brw) 137{ 138 struct gl_context *ctx = &brw->intel.ctx; 139 struct brw_sf_prog_key key; 140 141 memset(&key, 0, sizeof(key)); 142 143 /* Populate the key, noting state dependencies: 144 */ 145 /* CACHE_NEW_VS_PROG */ 146 key.attrs = brw->vs.prog_data->outputs_written; 147 148 /* BRW_NEW_REDUCED_PRIMITIVE */ 149 switch (brw->intel.reduced_primitive) { 150 case GL_TRIANGLES: 151 /* NOTE: We just use the edgeflag attribute as an indicator that 152 * unfilled triangles are active. We don't actually do the 153 * edgeflag testing here, it is already done in the clip 154 * program. 155 */ 156 if (key.attrs & BITFIELD64_BIT(VERT_RESULT_EDGE)) 157 key.primitive = SF_UNFILLED_TRIS; 158 else 159 key.primitive = SF_TRIANGLES; 160 break; 161 case GL_LINES: 162 key.primitive = SF_LINES; 163 break; 164 case GL_POINTS: 165 key.primitive = SF_POINTS; 166 break; 167 } 168 169 /* _NEW_TRANSFORM */ 170 key.nr_userclip = brw_count_bits(ctx->Transform.ClipPlanesEnabled); 171 172 /* _NEW_POINT */ 173 key.do_point_sprite = ctx->Point.PointSprite; 174 if (key.do_point_sprite) { 175 int i; 176 177 for (i = 0; i < 8; i++) { 178 if (ctx->Point.CoordReplace[i]) 179 key.point_sprite_coord_replace |= (1 << i); 180 } 181 } 182 key.sprite_origin_lower_left = (ctx->Point.SpriteOrigin == GL_LOWER_LEFT); 183 /* _NEW_LIGHT */ 184 key.do_flat_shading = (ctx->Light.ShadeModel == GL_FLAT); 185 key.do_twoside_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide); 186 187 /* _NEW_POLYGON */ 188 if (key.do_twoside_color) { 189 /* If we're rendering to a FBO, we have to invert the polygon 190 * face orientation, just as we invert the viewport in 191 * sf_unit_create_from_key(). ctx->DrawBuffer->Name will be 192 * nonzero if we're rendering to such an FBO. 193 */ 194 key.frontface_ccw = (ctx->Polygon.FrontFace == GL_CCW) ^ (ctx->DrawBuffer->Name != 0); 195 } 196 197 if (!brw_search_cache(&brw->cache, BRW_SF_PROG, 198 &key, sizeof(key), 199 &brw->sf.prog_offset, &brw->sf.prog_data)) { 200 compile_sf_prog( brw, &key ); 201 } 202} 203 204 205const struct brw_tracked_state brw_sf_prog = { 206 .dirty = { 207 .mesa = (_NEW_HINT | _NEW_LIGHT | _NEW_POLYGON | _NEW_POINT | _NEW_TRANSFORM), 208 .brw = (BRW_NEW_REDUCED_PRIMITIVE), 209 .cache = CACHE_NEW_VS_PROG 210 }, 211 .prepare = upload_sf_prog 212}; 213 214