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r600: set barrier for tex inst if dst is used earlier, might overwrite it otherwise

This commit is contained in:
Andre Maasikas 2009-10-21 19:04:21 +03:00
parent a88c9296cb
commit 869e20bcb7
1 changed files with 25 additions and 2 deletions
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27
src/mesa/drivers/dri/r600/r700_fragprog.c
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@ -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;
}