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 (at) tungstengraphics.com> 30 */ 31 32 #include "main/imports.h" 33 #include "main/enums.h" 34 #include "main/shaderobj.h" 35 #include "program/prog_parameter.h" 36 #include "program/program.h" 37 #include "program/programopt.h" 38 #include "tnl/tnl.h" 39 #include "glsl/ralloc.h" 40 41 #include "brw_context.h" 42 #include "brw_wm.h" 43 44 static void brwBindProgram( struct gl_context *ctx, 45 GLenum target, 46 struct gl_program *prog ) 47 { 48 struct brw_context *brw = brw_context(ctx); 49 50 switch (target) { 51 case GL_VERTEX_PROGRAM_ARB: 52 brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM; 53 break; 54 case GL_FRAGMENT_PROGRAM_ARB: 55 brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM; 56 break; 57 } 58 } 59 60 static struct gl_program *brwNewProgram( struct gl_context *ctx, 61 GLenum target, 62 GLuint id ) 63 { 64 struct brw_context *brw = brw_context(ctx); 65 66 switch (target) { 67 case GL_VERTEX_PROGRAM_ARB: { 68 struct brw_vertex_program *prog = CALLOC_STRUCT(brw_vertex_program); 69 if (prog) { 70 prog->id = brw->program_id++; 71 72 return _mesa_init_vertex_program( ctx, &prog->program, 73 target, id ); 74 } 75 else 76 return NULL; 77 } 78 79 case GL_FRAGMENT_PROGRAM_ARB: { 80 struct brw_fragment_program *prog = CALLOC_STRUCT(brw_fragment_program); 81 if (prog) { 82 prog->id = brw->program_id++; 83 84 return _mesa_init_fragment_program( ctx, &prog->program, 85 target, id ); 86 } 87 else 88 return NULL; 89 } 90 91 default: 92 return _mesa_new_program(ctx, target, id); 93 } 94 } 95 96 static void brwDeleteProgram( struct gl_context *ctx, 97 struct gl_program *prog ) 98 { 99 _mesa_delete_program( ctx, prog ); 100 } 101 102 103 static GLboolean 104 brwIsProgramNative(struct gl_context *ctx, 105 GLenum target, 106 struct gl_program *prog) 107 { 108 return true; 109 } 110 111 static void 112 shader_error(struct gl_context *ctx, struct gl_program *prog, const char *msg) 113 { 114 struct gl_shader_program *shader; 115 116 shader = _mesa_lookup_shader_program(ctx, prog->Id); 117 118 if (shader) { 119 ralloc_strcat(&shader->InfoLog, msg); 120 shader->LinkStatus = false; 121 } 122 } 123 124 static GLboolean 125 brwProgramStringNotify(struct gl_context *ctx, 126 GLenum target, 127 struct gl_program *prog) 128 { 129 struct brw_context *brw = brw_context(ctx); 130 int i; 131 132 if (target == GL_FRAGMENT_PROGRAM_ARB) { 133 struct gl_fragment_program *fprog = (struct gl_fragment_program *) prog; 134 struct brw_fragment_program *newFP = brw_fragment_program(fprog); 135 const struct brw_fragment_program *curFP = 136 brw_fragment_program_const(brw->fragment_program); 137 struct gl_shader_program *shader_program; 138 139 if (newFP == curFP) 140 brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM; 141 newFP->id = brw->program_id++; 142 143 /* Don't reject fragment shaders for their Mesa IR state when we're 144 * using the new FS backend. 145 */ 146 shader_program = _mesa_lookup_shader_program(ctx, prog->Id); 147 if (shader_program 148 && shader_program->_LinkedShaders[MESA_SHADER_FRAGMENT]) { 149 return true; 150 } 151 } 152 else if (target == GL_VERTEX_PROGRAM_ARB) { 153 struct gl_vertex_program *vprog = (struct gl_vertex_program *) prog; 154 struct brw_vertex_program *newVP = brw_vertex_program(vprog); 155 const struct brw_vertex_program *curVP = 156 brw_vertex_program_const(brw->vertex_program); 157 158 if (newVP == curVP) 159 brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM; 160 if (newVP->program.IsPositionInvariant) { 161 _mesa_insert_mvp_code(ctx, &newVP->program); 162 } 163 newVP->id = brw->program_id++; 164 165 /* Also tell tnl about it: 166 */ 167 _tnl_program_string(ctx, target, prog); 168 } 169 170 /* Reject programs with subroutines, which are totally broken at the moment 171 * (all program flows return when any program flow returns, and 172 * the VS also hangs if a function call calls a function. 173 * 174 * See piglit glsl-{vs,fs}-functions-[23] tests. 175 */ 176 for (i = 0; i < prog->NumInstructions; i++) { 177 struct prog_instruction *inst = prog->Instructions + i; 178 int r; 179 180 if (prog->Instructions[i].Opcode == OPCODE_CAL) { 181 shader_error(ctx, prog, 182 "i965 driver doesn't yet support uninlined function " 183 "calls. Move to using a single return statement at " 184 "the end of the function to work around it.\n"); 185 return false; 186 } 187 188 if (prog->Instructions[i].Opcode == OPCODE_RET) { 189 shader_error(ctx, prog, 190 "i965 driver doesn't yet support \"return\" " 191 "from main().\n"); 192 return false; 193 } 194 195 for (r = 0; r < _mesa_num_inst_src_regs(inst->Opcode); r++) { 196 if (prog->Instructions[i].SrcReg[r].RelAddr && 197 prog->Instructions[i].SrcReg[r].File == PROGRAM_INPUT) { 198 shader_error(ctx, prog, 199 "Variable indexing of shader inputs unsupported\n"); 200 return false; 201 } 202 } 203 204 if (target == GL_FRAGMENT_PROGRAM_ARB && 205 prog->Instructions[i].DstReg.RelAddr && 206 prog->Instructions[i].DstReg.File == PROGRAM_OUTPUT) { 207 shader_error(ctx, prog, 208 "Variable indexing of FS outputs unsupported\n"); 209 return false; 210 } 211 if (target == GL_FRAGMENT_PROGRAM_ARB) { 212 if ((prog->Instructions[i].DstReg.RelAddr && 213 prog->Instructions[i].DstReg.File == PROGRAM_TEMPORARY) || 214 (prog->Instructions[i].SrcReg[0].RelAddr && 215 prog->Instructions[i].SrcReg[0].File == PROGRAM_TEMPORARY) || 216 (prog->Instructions[i].SrcReg[1].RelAddr && 217 prog->Instructions[i].SrcReg[1].File == PROGRAM_TEMPORARY) || 218 (prog->Instructions[i].SrcReg[2].RelAddr && 219 prog->Instructions[i].SrcReg[2].File == PROGRAM_TEMPORARY)) { 220 shader_error(ctx, prog, 221 "Variable indexing of variable arrays in the FS " 222 "unsupported\n"); 223 return false; 224 } 225 } 226 } 227 228 return true; 229 } 230 231 /* Per-thread scratch space is a power-of-two multiple of 1KB. */ 232 int 233 brw_get_scratch_size(int size) 234 { 235 int i; 236 237 for (i = 1024; i < size; i *= 2) 238 ; 239 240 return i; 241 } 242 243 void 244 brw_get_scratch_bo(struct intel_context *intel, 245 drm_intel_bo **scratch_bo, int size) 246 { 247 drm_intel_bo *old_bo = *scratch_bo; 248 249 if (old_bo && old_bo->size < size) { 250 drm_intel_bo_unreference(old_bo); 251 old_bo = NULL; 252 } 253 254 if (!old_bo) { 255 *scratch_bo = drm_intel_bo_alloc(intel->bufmgr, "scratch bo", size, 4096); 256 } 257 } 258 259 void brwInitFragProgFuncs( struct dd_function_table *functions ) 260 { 261 assert(functions->ProgramStringNotify == _tnl_program_string); 262 263 functions->BindProgram = brwBindProgram; 264 functions->NewProgram = brwNewProgram; 265 functions->DeleteProgram = brwDeleteProgram; 266 functions->IsProgramNative = brwIsProgramNative; 267 functions->ProgramStringNotify = brwProgramStringNotify; 268 269 functions->NewShader = brw_new_shader; 270 functions->NewShaderProgram = brw_new_shader_program; 271 functions->LinkShader = brw_link_shader; 272 } 273 274
