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-rw-r--r--src/mesa/shader/nvprogram.c44
-rw-r--r--src/mesa/shader/nvprogram.h4
-rw-r--r--src/mesa/shader/nvvertparse.c1
3 files changed, 49 insertions, 0 deletions
diff --git a/src/mesa/shader/nvprogram.c b/src/mesa/shader/nvprogram.c
index fdb2f4210ad..471a7358a2f 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)
diff --git a/src/mesa/shader/nvprogram.h b/src/mesa/shader/nvprogram.h
index 0ed143d52f7..8ee59661bd0 100644
--- a/src/mesa/shader/nvprogram.h
+++ b/src/mesa/shader/nvprogram.h
@@ -106,4 +106,8 @@ _mesa_GetProgramNamedParameterdvNV(GLuint id, GLsizei len, const GLubyte *name,
extern void
_mesa_setup_nv_temporary_count(GLcontext *ctx, struct gl_program *program);
+extern void
+_mesa_emit_nv_temp_initialization(GLcontext *ctx,
+ struct gl_program *program);
+
#endif
diff --git a/src/mesa/shader/nvvertparse.c b/src/mesa/shader/nvvertparse.c
index a94e6b8b803..6ab8a14cb9b 100644
--- a/src/mesa/shader/nvvertparse.c
+++ b/src/mesa/shader/nvvertparse.c
@@ -1423,6 +1423,7 @@ _mesa_parse_nv_vertex_program(GLcontext *ctx, GLenum dstTarget,
program->Base.NumParameters = program->Base.Parameters->NumParameters;
_mesa_setup_nv_temporary_count(ctx, &program->Base);
+ _mesa_emit_nv_temp_initialization(ctx, &program->Base);
}
else {
/* Error! */