diff options
Diffstat (limited to 'src/mesa/program/programopt.c')
| -rw-r--r-- | src/mesa/program/programopt.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/mesa/program/programopt.c b/src/mesa/program/programopt.c index f92881f8337..5ad9571f757 100644 --- a/src/mesa/program/programopt.c +++ b/src/mesa/program/programopt.c @@ -238,7 +238,7 @@ _mesa_insert_mvp_code(struct gl_context *ctx, struct gl_vertex_program *vprog) * to vertex programs too. */ void -_mesa_append_fog_code(struct gl_context *ctx, struct gl_fragment_program *fprog) +_mesa_append_fog_code(struct gl_context *ctx, struct gl_fragment_program *fprog, GLboolean saturate) { static const gl_state_index fogPStateOpt[STATE_LENGTH] = { STATE_INTERNAL, STATE_FOG_PARAMS_OPTIMIZED, 0, 0, 0 }; @@ -290,7 +290,7 @@ _mesa_append_fog_code(struct gl_context *ctx, struct gl_fragment_program *fprog) /* change the instruction to write to colorTemp w/ clamping */ inst->DstReg.File = PROGRAM_TEMPORARY; inst->DstReg.Index = colorTemp; - inst->SaturateMode = SATURATE_ZERO_ONE; + inst->SaturateMode = saturate; /* don't break (may be several writes to result.color) */ } inst++; @@ -300,6 +300,7 @@ _mesa_append_fog_code(struct gl_context *ctx, struct gl_fragment_program *fprog) _mesa_init_instructions(inst, 5); /* emit instructions to compute fog blending factor */ + /* this is always clamped to [0, 1] regardless of fragment clamping */ if (fprog->FogOption == GL_LINEAR) { /* MAD fogFactorTemp.x, fragment.fogcoord.x, fogPRefOpt.x, fogPRefOpt.y; */ inst->Opcode = OPCODE_MAD; |