1 /* 2 Copyright (C) Intel Corp. 2006. All Rights Reserved. 3 Intel funded Tungsten Graphics 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 <keithw (at) vmware.com> 30 */ 31 32 #include "compiler/nir/nir.h" 33 #include "main/macros.h" 34 #include "main/mtypes.h" 35 #include "main/enums.h" 36 #include "main/fbobject.h" 37 38 #include "intel_batchbuffer.h" 39 40 #include "brw_defines.h" 41 #include "brw_context.h" 42 #include "brw_eu.h" 43 #include "brw_util.h" 44 #include "brw_sf.h" 45 #include "brw_state.h" 46 47 #include "util/ralloc.h" 48 49 static void compile_sf_prog( struct brw_context *brw, 50 struct brw_sf_prog_key *key ) 51 { 52 struct brw_sf_compile c; 53 const GLuint *program; 54 void *mem_ctx; 55 GLuint program_size; 56 57 memset(&c, 0, sizeof(c)); 58 59 mem_ctx = ralloc_context(NULL); 60 /* Begin the compilation: 61 */ 62 brw_init_codegen(&brw->screen->devinfo, &c.func, mem_ctx); 63 64 c.key = *key; 65 c.vue_map = brw->vue_map_geom_out; 66 if (c.key.do_point_coord) { 67 /* 68 * gl_PointCoord is a FS instead of VS builtin variable, thus it's 69 * not included in c.vue_map generated in VS stage. Here we add 70 * it manually to let SF shader generate the needed interpolation 71 * coefficient for FS shader. 72 */ 73 c.vue_map.varying_to_slot[BRW_VARYING_SLOT_PNTC] = c.vue_map.num_slots; 74 c.vue_map.slot_to_varying[c.vue_map.num_slots++] = BRW_VARYING_SLOT_PNTC; 75 } 76 c.urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET; 77 c.nr_attr_regs = (c.vue_map.num_slots + 1)/2 - c.urb_entry_read_offset; 78 c.nr_setup_regs = c.nr_attr_regs; 79 80 c.prog_data.urb_read_length = c.nr_attr_regs; 81 c.prog_data.urb_entry_size = c.nr_setup_regs * 2; 82 83 /* Which primitive? Or all three? 84 */ 85 switch (key->primitive) { 86 case SF_TRIANGLES: 87 c.nr_verts = 3; 88 brw_emit_tri_setup( &c, true ); 89 break; 90 case SF_LINES: 91 c.nr_verts = 2; 92 brw_emit_line_setup( &c, true ); 93 break; 94 case SF_POINTS: 95 c.nr_verts = 1; 96 if (key->do_point_sprite) 97 brw_emit_point_sprite_setup( &c, true ); 98 else 99 brw_emit_point_setup( &c, true ); 100 break; 101 case SF_UNFILLED_TRIS: 102 c.nr_verts = 3; 103 brw_emit_anyprim_setup( &c ); 104 break; 105 default: 106 unreachable("not reached"); 107 } 108 109 /* FINISHME: SF programs use calculated jumps (i.e., JMPI with a register 110 * source). Compacting would be difficult. 111 */ 112 /* brw_compact_instructions(&c.func, 0, 0, NULL); */ 113 114 /* get the program 115 */ 116 program = brw_get_program(&c.func, &program_size); 117 118 if (unlikely(INTEL_DEBUG & DEBUG_SF)) { 119 fprintf(stderr, "sf:\n"); 120 brw_disassemble(&brw->screen->devinfo, 121 c.func.store, 0, program_size, stderr); 122 fprintf(stderr, "\n"); 123 } 124 125 brw_upload_cache(&brw->cache, BRW_CACHE_SF_PROG, 126 &c.key, sizeof(c.key), 127 program, program_size, 128 &c.prog_data, sizeof(c.prog_data), 129 &brw->sf.prog_offset, &brw->sf.prog_data); 130 ralloc_free(mem_ctx); 131 } 132 133 /* Calculate interpolants for triangle and line rasterization. 134 */ 135 void 136 brw_upload_sf_prog(struct brw_context *brw) 137 { 138 struct gl_context *ctx = &brw->ctx; 139 struct brw_sf_prog_key key; 140 141 if (!brw_state_dirty(brw, 142 _NEW_BUFFERS | 143 _NEW_HINT | 144 _NEW_LIGHT | 145 _NEW_POINT | 146 _NEW_POLYGON | 147 _NEW_PROGRAM | 148 _NEW_TRANSFORM, 149 BRW_NEW_BLORP | 150 BRW_NEW_FS_PROG_DATA | 151 BRW_NEW_REDUCED_PRIMITIVE | 152 BRW_NEW_VUE_MAP_GEOM_OUT)) 153 return; 154 155 /* _NEW_BUFFERS */ 156 bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer); 157 158 memset(&key, 0, sizeof(key)); 159 160 /* Populate the key, noting state dependencies: 161 */ 162 /* BRW_NEW_VUE_MAP_GEOM_OUT */ 163 key.attrs = brw->vue_map_geom_out.slots_valid; 164 165 /* BRW_NEW_REDUCED_PRIMITIVE */ 166 switch (brw->reduced_primitive) { 167 case GL_TRIANGLES: 168 /* NOTE: We just use the edgeflag attribute as an indicator that 169 * unfilled triangles are active. We don't actually do the 170 * edgeflag testing here, it is already done in the clip 171 * program. 172 */ 173 if (key.attrs & BITFIELD64_BIT(VARYING_SLOT_EDGE)) 174 key.primitive = SF_UNFILLED_TRIS; 175 else 176 key.primitive = SF_TRIANGLES; 177 break; 178 case GL_LINES: 179 key.primitive = SF_LINES; 180 break; 181 case GL_POINTS: 182 key.primitive = SF_POINTS; 183 break; 184 } 185 186 /* _NEW_TRANSFORM */ 187 key.userclip_active = (ctx->Transform.ClipPlanesEnabled != 0); 188 189 /* _NEW_POINT */ 190 key.do_point_sprite = ctx->Point.PointSprite; 191 if (key.do_point_sprite) { 192 key.point_sprite_coord_replace = ctx->Point.CoordReplace & 0xff; 193 } 194 if (brw->fragment_program->info.inputs_read & 195 BITFIELD64_BIT(VARYING_SLOT_PNTC)) { 196 key.do_point_coord = 1; 197 } 198 199 /* 200 * Window coordinates in a FBO are inverted, which means point 201 * sprite origin must be inverted, too. 202 */ 203 if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) 204 key.sprite_origin_lower_left = true; 205 206 /* BRW_NEW_FS_PROG_DATA */ 207 const struct brw_wm_prog_data *wm_prog_data = 208 brw_wm_prog_data(brw->wm.base.prog_data); 209 if (wm_prog_data) { 210 key.contains_flat_varying = wm_prog_data->contains_flat_varying; 211 key.interp_mode = wm_prog_data->interp_mode; 212 } 213 214 /* _NEW_LIGHT | _NEW_PROGRAM */ 215 key.do_twoside_color = ((ctx->Light.Enabled && ctx->Light.Model.TwoSide) || 216 ctx->VertexProgram._TwoSideEnabled); 217 218 /* _NEW_POLYGON */ 219 if (key.do_twoside_color) { 220 /* If we're rendering to a FBO, we have to invert the polygon 221 * face orientation, just as we invert the viewport in 222 * sf_unit_create_from_key(). 223 */ 224 key.frontface_ccw = ctx->Polygon._FrontBit == render_to_fbo; 225 } 226 227 if (!brw_search_cache(&brw->cache, BRW_CACHE_SF_PROG, 228 &key, sizeof(key), 229 &brw->sf.prog_offset, &brw->sf.prog_data)) { 230 compile_sf_prog( brw, &key ); 231 } 232 } 233
