diff options
author | Zack Rusin <zack@kde.org> | 2009-07-01 10:42:58 -0400 |
---|---|---|
committer | Zack Rusin <zack@kde.org> | 2009-07-01 10:45:55 -0400 |
commit | 1c04731b8721850b6abb12a43a3eec616b850e86 (patch) | |
tree | 1b172fcb4b651718b39a613c2267b76b457ccf8e /src/mesa/state_tracker/st_mesa_to_tgsi.c | |
parent | e8c4663c11cfbb80ed23b1581cf1f3ccaef28bce (diff) |
gallium: fix the front face semantics
mesa allocates both frontface and pointcoord registers within the fog
coordinate register, by using swizzling. to make it cleaner and easier
for drivers we want each of them in its own register. so when doing
compilation from the mesa IR to tgsi allocate new registers for both
and add new semantics to the respective declarations.
Diffstat (limited to 'src/mesa/state_tracker/st_mesa_to_tgsi.c')
-rw-r--r-- | src/mesa/state_tracker/st_mesa_to_tgsi.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c index 43c9afccc3..3140ebe04a 100644 --- a/src/mesa/state_tracker/st_mesa_to_tgsi.c +++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c @@ -101,8 +101,10 @@ map_register_file( */ static GLuint map_register_file_index( + GLuint procType, GLuint file, GLuint index, + GLuint *swizzle, const GLuint inputMapping[], const GLuint outputMapping[], const GLuint immediateMapping[], @@ -110,6 +112,20 @@ map_register_file_index( { switch( file ) { case TGSI_FILE_INPUT: + if (procType == TGSI_PROCESSOR_FRAGMENT && + index == FRAG_ATTRIB_FOGC) { + if (GET_SWZ(*swizzle, 0) == SWIZZLE_X) { + /* do nothing we're, ok */ + } else if (GET_SWZ(*swizzle, 0) == SWIZZLE_Y) { + /* replace the swizzle with xxxx */ + *swizzle = MAKE_SWIZZLE4(SWIZZLE_X, + SWIZZLE_X, + SWIZZLE_X, + SWIZZLE_X); + } else { + /* fixme: point coord */ + } + } /* inputs are mapped according to the user-defined map */ return inputMapping[index]; @@ -236,8 +252,10 @@ compile_instruction( fulldst = &fullinst->FullDstRegisters[0]; fulldst->DstRegister.File = map_register_file( inst->DstReg.File, 0, NULL, GL_FALSE ); fulldst->DstRegister.Index = map_register_file_index( + procType, fulldst->DstRegister.File, inst->DstReg.Index, + NULL, inputMapping, outputMapping, NULL, @@ -246,6 +264,7 @@ compile_instruction( for (i = 0; i < fullinst->Instruction.NumSrcRegs; i++) { GLuint j; + GLuint swizzle = inst->SrcReg[i].Swizzle; fullsrc = &fullinst->FullSrcRegisters[i]; @@ -264,8 +283,10 @@ compile_instruction( immediateMapping, indirectAccess ); fullsrc->SrcRegister.Index = map_register_file_index( + procType, fullsrc->SrcRegister.File, inst->SrcReg[i].Index, + &swizzle, inputMapping, outputMapping, immediateMapping, @@ -278,7 +299,7 @@ compile_instruction( GLboolean extended = (inst->SrcReg[i].Negate != NEGATE_NONE && inst->SrcReg[i].Negate != NEGATE_XYZW); for( j = 0; j < 4; j++ ) { - swz[j] = GET_SWZ( inst->SrcReg[i].Swizzle, j ); + swz[j] = GET_SWZ( swizzle, j ); if (swz[j] > SWIZZLE_W) extended = GL_TRUE; } |