From 726a04a2cd1bf159a6c40584b4b2b9bc5948a82e Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 24 Sep 2009 11:58:33 -0700 Subject: i965: Emit zero initialization for NV VP temporaries as required. This is similar to what r300 does inside the driver, but I've added it as a generic option since it seems most hardware will want it. Fixes piglit nv-init-zero-reg.vpfp and nv-init-zero-addr.vpfp. --- src/mesa/shader/nvprogram.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'src/mesa/shader/nvprogram.c') diff --git a/src/mesa/shader/nvprogram.c b/src/mesa/shader/nvprogram.c index fdb2f4210a..471a7358a2 100644 --- a/src/mesa/shader/nvprogram.c +++ b/src/mesa/shader/nvprogram.c @@ -509,7 +509,51 @@ _mesa_GetVertexAttribPointervNV(GLuint index, GLenum pname, GLvoid **pointer) *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[index].Ptr; } +void +_mesa_emit_nv_temp_initialization(GLcontext *ctx, + struct gl_program *program) +{ + struct prog_instruction *inst; + int i; + + if (!ctx->Shader.EmitNVTempInitialization) + return; + /* We'll swizzle up a zero temporary so we can use it for the + * ARL. + */ + if (program->NumTemporaries == 0) + program->NumTemporaries = 1; + + _mesa_insert_instructions(program, 0, program->NumTemporaries + 1); + + for (i = 0; i < program->NumTemporaries; i++) { + struct prog_instruction *inst = &program->Instructions[i]; + + inst->Opcode = OPCODE_SWZ; + inst->DstReg.File = PROGRAM_TEMPORARY; + inst->DstReg.Index = i; + inst->DstReg.WriteMask = WRITEMASK_XYZW; + inst->SrcReg[0].File = PROGRAM_TEMPORARY; + inst->SrcReg[0].Index = 0; + inst->SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_ZERO, + SWIZZLE_ZERO, + SWIZZLE_ZERO, + SWIZZLE_ZERO); + } + + inst = &program->Instructions[i]; + inst->Opcode = OPCODE_ARL; + inst->DstReg.File = PROGRAM_ADDRESS; + inst->DstReg.Index = 0; + inst->DstReg.WriteMask = WRITEMASK_XYZW; + inst->SrcReg[0].File = PROGRAM_TEMPORARY; + inst->SrcReg[0].Index = 0; + inst->SrcReg[0].Swizzle = SWIZZLE_XXXX; + + if (program->NumAddressRegs == 0) + program->NumAddressRegs = 1; +} void _mesa_setup_nv_temporary_count(GLcontext *ctx, struct gl_program *program) -- cgit v1.2.3