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-rw-r--r--src/mesa/drivers/dri/r600/r700_fragprog.c27
1 files changed, 25 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/r600/r700_fragprog.c b/src/mesa/drivers/dri/r600/r700_fragprog.c
index 3736bce11c..0f549ead9c 100644
--- a/src/mesa/drivers/dri/r600/r700_fragprog.c
+++ b/src/mesa/drivers/dri/r600/r700_fragprog.c
@@ -135,15 +135,19 @@ GLboolean Find_Instruction_Dependencies_fp(struct r700_fragment_program *fp,
{
GLuint i, j;
GLint * puiTEMPwrites;
+ GLint * puiTEMPreads;
struct prog_instruction * pILInst;
InstDeps *pInstDeps;
struct prog_instruction * texcoord_DepInst;
GLint nDepInstID;
puiTEMPwrites = (GLint*) MALLOC(sizeof(GLuint)*mesa_fp->Base.NumTemporaries);
+ puiTEMPreads = (GLint*) MALLOC(sizeof(GLuint)*mesa_fp->Base.NumTemporaries);
+
for(i=0; i<mesa_fp->Base.NumTemporaries; i++)
{
puiTEMPwrites[i] = -1;
+ puiTEMPreads[i] = -1;
}
pInstDeps = (InstDeps*)MALLOC(sizeof(InstDeps)*mesa_fp->Base.NumInstructions);
@@ -167,6 +171,11 @@ GLboolean Find_Instruction_Dependencies_fp(struct r700_fragment_program *fp,
{
//Set dep.
pInstDeps[i].nSrcDeps[j] = puiTEMPwrites[pILInst->SrcReg[j].Index];
+ //Set first read
+ if(puiTEMPreads[pILInst->SrcReg[j].Index] < 0 )
+ {
+ puiTEMPreads[pILInst->SrcReg[j].Index] = i;
+ }
}
else
{
@@ -177,8 +186,6 @@ GLboolean Find_Instruction_Dependencies_fp(struct r700_fragment_program *fp,
fp->r700AsmCode.pInstDeps = pInstDeps;
- FREE(puiTEMPwrites);
-
//Find dep for tex inst
for(i=0; i<mesa_fp->Base.NumInstructions; i++)
{
@@ -203,9 +210,25 @@ GLboolean Find_Instruction_Dependencies_fp(struct r700_fragment_program *fp,
{ //... other deps?
}
}
+ // make sure that we dont overwrite src used earlier
+ nDepInstID = puiTEMPreads[pILInst->DstReg.Index];
+ if(nDepInstID < i)
+ {
+ pInstDeps[i].nDstDep = puiTEMPreads[pILInst->DstReg.Index];
+ texcoord_DepInst = &(mesa_fp->Base.Instructions[nDepInstID]);
+ if(GL_TRUE == IsAlu(texcoord_DepInst->Opcode) )
+ {
+ pInstDeps[nDepInstID].nDstDep = i;
+ }
+
+ }
+
}
}
+ FREE(puiTEMPwrites);
+ FREE(puiTEMPreads);
+
return GL_TRUE;
}