diff options
Diffstat (limited to 'mesalib/src/mesa/program/programopt.c')
| -rw-r--r-- | mesalib/src/mesa/program/programopt.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mesalib/src/mesa/program/programopt.c b/mesalib/src/mesa/program/programopt.c index 6601f7416..de311fd16 100644 --- a/mesalib/src/mesa/program/programopt.c +++ b/mesalib/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;
|