diff options
| author | Brian <[email protected]> | 2007-10-26 19:19:09 -0600 |
|---|---|---|
| committer | Brian <[email protected]> | 2007-10-26 19:19:51 -0600 |
| commit | 8fed2466e4056668a76a87cf935b5fbff8ae15ca (patch) | |
| tree | 81345e5b5ee66dc2dd299f5b9ce29314f2e52735 /src/mesa/shader/prog_execute.c | |
| parent | 789d248558061fe4d65f664d6770a12b90fa2e34 (diff) | |
Re-implement GLSL texture sampler variables.
GLSL sampler variables indicate which texture unit to use for TEX instructions.
Previously, this was baked into the fragment/vertex program and couldn't be
readily changed once set.
Now, SamplerUnits[] array indicates which texture unit is to be used for
each sampler variable. These values are set with glUniform1i().
This is extra state that must be passed to the fragment/vertex program
executor at runtime.
Diffstat (limited to 'src/mesa/shader/prog_execute.c')
| -rw-r--r-- | src/mesa/shader/prog_execute.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c index 28d195d0ee9..bd64b57eb98 100644 --- a/src/mesa/shader/prog_execute.c +++ b/src/mesa/shader/prog_execute.c @@ -1316,22 +1316,22 @@ _mesa_execute_program(GLcontext * ctx, * The rest of the time, just use zero (until we get a more * sophisticated way of computing lambda). */ + const GLuint unit = machine->Samplers[inst->TexSrcUnit]; GLfloat coord[4], color[4], lambda; #if 0 if (inst->SrcReg[0].File == PROGRAM_INPUT && - inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0 + inst->TexSrcUnit) - lambda = span->array->lambda[inst->TexSrcUnit][column]; + inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0 + unit) + lambda = span->array->lambda[unit][column]; else #endif lambda = 0.0; fetch_vector4(&inst->SrcReg[0], machine, coord); - machine->FetchTexelLod(ctx, coord, lambda, inst->TexSrcUnit, - color); + machine->FetchTexelLod(ctx, coord, lambda, unit, color); if (DEBUG_PROG) { printf("TEX (%g, %g, %g, %g) = texture[%d][%g, %g, %g, %g], " "lod %f\n", color[0], color[1], color[2], color[3], - inst->TexSrcUnit, + unit, coord[0], coord[1], coord[2], coord[3], lambda); } store_vector4(inst, machine, color); @@ -1375,11 +1375,12 @@ _mesa_execute_program(GLcontext * ctx, case OPCODE_TXP: /* GL_ARB_fragment_program only */ /* Texture lookup w/ projective divide */ { + const GLuint unit = machine->Samplers[inst->TexSrcUnit]; GLfloat texcoord[4], color[4], lambda; #if 0 if (inst->SrcReg[0].File == PROGRAM_INPUT && inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0 + inst->TexSrcUnit) - lambda = span->array->lambda[inst->TexSrcUnit][column]; + lambda = span->array->lambda[unit][column]; else #endif lambda = 0.0; @@ -1393,8 +1394,7 @@ _mesa_execute_program(GLcontext * ctx, texcoord[1] /= texcoord[3]; texcoord[2] /= texcoord[3]; } - machine->FetchTexelLod(ctx, texcoord, lambda, - inst->TexSrcUnit, color); + machine->FetchTexelLod(ctx, texcoord, lambda, unit, color); store_vector4(inst, machine, color); } break; |