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path: root/mesalib/src/mesa/shader/programopt.c
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Diffstat (limited to 'mesalib/src/mesa/shader/programopt.c')
-rw-r--r--mesalib/src/mesa/shader/programopt.c109
1 files changed, 98 insertions, 11 deletions
diff --git a/mesalib/src/mesa/shader/programopt.c b/mesalib/src/mesa/shader/programopt.c
index f70c75cec..951454570 100644
--- a/mesalib/src/mesa/shader/programopt.c
+++ b/mesalib/src/mesa/shader/programopt.c
@@ -109,7 +109,7 @@ _mesa_insert_mvp_dp4_code(GLcontext *ctx, struct gl_vertex_program *vprog)
vprog->Base.Instructions = newInst;
vprog->Base.NumInstructions = newLen;
vprog->Base.InputsRead |= VERT_BIT_POS;
- vprog->Base.OutputsWritten |= (1 << VERT_RESULT_HPOS);
+ vprog->Base.OutputsWritten |= BITFIELD64_BIT(VERT_RESULT_HPOS);
}
@@ -211,7 +211,7 @@ _mesa_insert_mvp_mad_code(GLcontext *ctx, struct gl_vertex_program *vprog)
vprog->Base.Instructions = newInst;
vprog->Base.NumInstructions = newLen;
vprog->Base.InputsRead |= VERT_BIT_POS;
- vprog->Base.OutputsWritten |= (1 << VERT_RESULT_HPOS);
+ vprog->Base.OutputsWritten |= BITFIELD64_BIT(VERT_RESULT_HPOS);
}
@@ -528,15 +528,11 @@ _mesa_remove_output_reads(struct gl_program *prog, gl_register_file type)
/* look for instructions which write to the varying vars identified above */
for (i = 0; i < prog->NumInstructions; i++) {
struct prog_instruction *inst = prog->Instructions + i;
- const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
- GLuint j;
- for (j = 0; j < numSrc; j++) {
- if (inst->DstReg.File == type &&
- outputMap[inst->DstReg.Index] >= 0) {
- /* change inst to write to the temp reg, instead of the varying */
- inst->DstReg.File = PROGRAM_TEMPORARY;
- inst->DstReg.Index = outputMap[inst->DstReg.Index];
- }
+ if (inst->DstReg.File == type &&
+ outputMap[inst->DstReg.Index] >= 0) {
+ /* change inst to write to the temp reg, instead of the varying */
+ inst->DstReg.File = PROGRAM_TEMPORARY;
+ inst->DstReg.Index = outputMap[inst->DstReg.Index];
}
}
@@ -573,3 +569,94 @@ _mesa_remove_output_reads(struct gl_program *prog, gl_register_file type)
}
}
}
+
+
+/**
+ * Make the given fragment program into a "no-op" shader.
+ * Actually, just copy the incoming fragment color (or texcoord)
+ * to the output color.
+ * This is for debug/test purposes.
+ */
+void
+_mesa_nop_fragment_program(GLcontext *ctx, struct gl_fragment_program *prog)
+{
+ struct prog_instruction *inst;
+ GLuint inputAttr;
+
+ inst = _mesa_alloc_instructions(2);
+ if (!inst) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "_mesa_nop_fragment_program");
+ return;
+ }
+
+ _mesa_init_instructions(inst, 2);
+
+ inst[0].Opcode = OPCODE_MOV;
+ inst[0].DstReg.File = PROGRAM_OUTPUT;
+ inst[0].DstReg.Index = FRAG_RESULT_COLOR;
+ inst[0].SrcReg[0].File = PROGRAM_INPUT;
+ if (prog->Base.InputsRead & FRAG_BIT_COL0)
+ inputAttr = FRAG_ATTRIB_COL0;
+ else
+ inputAttr = FRAG_ATTRIB_TEX0;
+ inst[0].SrcReg[0].Index = inputAttr;
+
+ inst[1].Opcode = OPCODE_END;
+
+ _mesa_free_instructions(prog->Base.Instructions,
+ prog->Base.NumInstructions);
+
+ prog->Base.Instructions = inst;
+ prog->Base.NumInstructions = 2;
+ prog->Base.InputsRead = 1 << inputAttr;
+ prog->Base.OutputsWritten = BITFIELD64_BIT(FRAG_RESULT_COLOR);
+}
+
+
+/**
+ * \sa _mesa_nop_fragment_program
+ * Replace the given vertex program with a "no-op" program that just
+ * transforms vertex position and emits color.
+ */
+void
+_mesa_nop_vertex_program(GLcontext *ctx, struct gl_vertex_program *prog)
+{
+ struct prog_instruction *inst;
+ GLuint inputAttr;
+
+ /*
+ * Start with a simple vertex program that emits color.
+ */
+ inst = _mesa_alloc_instructions(2);
+ if (!inst) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "_mesa_nop_vertex_program");
+ return;
+ }
+
+ _mesa_init_instructions(inst, 2);
+
+ inst[0].Opcode = OPCODE_MOV;
+ inst[0].DstReg.File = PROGRAM_OUTPUT;
+ inst[0].DstReg.Index = VERT_RESULT_COL0;
+ inst[0].SrcReg[0].File = PROGRAM_INPUT;
+ if (prog->Base.InputsRead & VERT_BIT_COLOR0)
+ inputAttr = VERT_ATTRIB_COLOR0;
+ else
+ inputAttr = VERT_ATTRIB_TEX0;
+ inst[0].SrcReg[0].Index = inputAttr;
+
+ inst[1].Opcode = OPCODE_END;
+
+ _mesa_free_instructions(prog->Base.Instructions,
+ prog->Base.NumInstructions);
+
+ prog->Base.Instructions = inst;
+ prog->Base.NumInstructions = 2;
+ prog->Base.InputsRead = 1 << inputAttr;
+ prog->Base.OutputsWritten = BITFIELD64_BIT(VERT_RESULT_COL0);
+
+ /*
+ * Now insert code to do standard modelview/projection transformation.
+ */
+ _mesa_insert_mvp_code(ctx, prog);
+}