brw_sf.c revision bb1540835056cdea5db6f55b19c0c87358f14cd1
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 46static void compile_sf_prog( struct brw_context *brw, 47 struct brw_sf_prog_key *key ) 48{ 49 struct intel_context *intel = &brw->intel; 50 struct brw_sf_compile c; 51 const GLuint *program; 52 GLuint program_size; 53 GLuint i, idx; 54 55 memset(&c, 0, sizeof(c)); 56 57 /* Begin the compilation: 58 */ 59 brw_init_compile(brw, &c.func); 60 61 c.key = *key; 62 c.nr_attrs = brw_count_bits(c.key.attrs); 63 c.nr_attr_regs = (c.nr_attrs+1)/2; 64 c.nr_setup_attrs = brw_count_bits(c.key.attrs); 65 c.nr_setup_regs = (c.nr_setup_attrs+1)/2; 66 67 c.prog_data.urb_read_length = c.nr_attr_regs; 68 c.prog_data.urb_entry_size = c.nr_setup_regs * 2; 69 70 /* Construct map from attribute number to position in the vertex. 71 */ 72 for (i = idx = 0; i < VERT_RESULT_MAX; i++) { 73 if (c.key.attrs & BITFIELD64_BIT(i)) { 74 c.attr_to_idx[i] = idx; 75 c.idx_to_attr[idx] = i; 76 idx++; 77 } 78 } 79 80 /* Which primitive? Or all three? 81 */ 82 switch (key->primitive) { 83 case SF_TRIANGLES: 84 c.nr_verts = 3; 85 brw_emit_tri_setup( &c, GL_TRUE ); 86 break; 87 case SF_LINES: 88 c.nr_verts = 2; 89 brw_emit_line_setup( &c, GL_TRUE ); 90 break; 91 case SF_POINTS: 92 c.nr_verts = 1; 93 if (key->do_point_sprite) 94 brw_emit_point_sprite_setup( &c, GL_TRUE ); 95 else 96 brw_emit_point_setup( &c, GL_TRUE ); 97 break; 98 case SF_UNFILLED_TRIS: 99 c.nr_verts = 3; 100 brw_emit_anyprim_setup( &c ); 101 break; 102 default: 103 assert(0); 104 return; 105 } 106 107 /* get the program 108 */ 109 program = brw_get_program(&c.func, &program_size); 110 111 if (unlikely(INTEL_DEBUG & DEBUG_SF)) { 112 printf("sf:\n"); 113 for (i = 0; i < program_size / sizeof(struct brw_instruction); i++) 114 brw_disasm(stdout, &((struct brw_instruction *)program)[i], 115 intel->gen); 116 printf("\n"); 117 } 118 119 /* Upload 120 */ 121 drm_intel_bo_unreference(brw->sf.prog_bo); 122 brw->sf.prog_bo = brw_upload_cache_with_auxdata(&brw->cache, BRW_SF_PROG, 123 &c.key, sizeof(c.key), 124 NULL, 0, 125 program, program_size, 126 &c.prog_data, 127 sizeof(c.prog_data), 128 &brw->sf.prog_data); 129} 130 131/* Calculate interpolants for triangle and line rasterization. 132 */ 133static void upload_sf_prog(struct brw_context *brw) 134{ 135 struct gl_context *ctx = &brw->intel.ctx; 136 struct brw_sf_prog_key key; 137 138 memset(&key, 0, sizeof(key)); 139 140 /* Populate the key, noting state dependencies: 141 */ 142 /* CACHE_NEW_VS_PROG */ 143 key.attrs = brw->vs.prog_data->outputs_written; 144 145 /* BRW_NEW_REDUCED_PRIMITIVE */ 146 switch (brw->intel.reduced_primitive) { 147 case GL_TRIANGLES: 148 /* NOTE: We just use the edgeflag attribute as an indicator that 149 * unfilled triangles are active. We don't actually do the 150 * edgeflag testing here, it is already done in the clip 151 * program. 152 */ 153 if (key.attrs & BITFIELD64_BIT(VERT_RESULT_EDGE)) 154 key.primitive = SF_UNFILLED_TRIS; 155 else 156 key.primitive = SF_TRIANGLES; 157 break; 158 case GL_LINES: 159 key.primitive = SF_LINES; 160 break; 161 case GL_POINTS: 162 key.primitive = SF_POINTS; 163 break; 164 } 165 166 /* _NEW_POINT */ 167 key.do_point_sprite = ctx->Point.PointSprite; 168 if (key.do_point_sprite) { 169 int i; 170 171 for (i = 0; i < 8; i++) { 172 if (ctx->Point.CoordReplace[i]) 173 key.point_sprite_coord_replace |= (1 << i); 174 } 175 } 176 key.sprite_origin_lower_left = (ctx->Point.SpriteOrigin == GL_LOWER_LEFT); 177 /* _NEW_LIGHT */ 178 key.do_flat_shading = (ctx->Light.ShadeModel == GL_FLAT); 179 key.do_twoside_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide); 180 181 /* _NEW_HINT */ 182 key.linear_color = (ctx->Hint.PerspectiveCorrection == GL_FASTEST); 183 184 /* _NEW_POLYGON */ 185 if (key.do_twoside_color) { 186 /* If we're rendering to a FBO, we have to invert the polygon 187 * face orientation, just as we invert the viewport in 188 * sf_unit_create_from_key(). ctx->DrawBuffer->Name will be 189 * nonzero if we're rendering to such an FBO. 190 */ 191 key.frontface_ccw = (ctx->Polygon.FrontFace == GL_CCW) ^ (ctx->DrawBuffer->Name != 0); 192 } 193 194 drm_intel_bo_unreference(brw->sf.prog_bo); 195 brw->sf.prog_bo = brw_search_cache(&brw->cache, BRW_SF_PROG, 196 &key, sizeof(key), 197 NULL, 0, 198 &brw->sf.prog_data); 199 if (brw->sf.prog_bo == NULL) 200 compile_sf_prog( brw, &key ); 201} 202 203 204const struct brw_tracked_state brw_sf_prog = { 205 .dirty = { 206 .mesa = (_NEW_HINT | _NEW_LIGHT | _NEW_POLYGON | _NEW_POINT), 207 .brw = (BRW_NEW_REDUCED_PRIMITIVE), 208 .cache = CACHE_NEW_VS_PROG 209 }, 210 .prepare = upload_sf_prog 211}; 212 213