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-rw-r--r--src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c59
1 files changed, 55 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c
index 276f4cb6b67..d5b08dd9592 100644
--- a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c
+++ b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c
@@ -146,7 +146,8 @@ static unsigned long t_src(struct r300_vertex_program_code *vp,
t_swizzle(GET_SWZ(src->Swizzle, 2)),
t_swizzle(GET_SWZ(src->Swizzle, 3)),
t_src_class(src->File),
- src->Negate) | (src->RelAddr << 4);
+ src->Negate) |
+ (src->RelAddr << 4) | (src->Abs << 3);
}
static unsigned long t_src_scalar(struct r300_vertex_program_code *vp,
@@ -162,7 +163,7 @@ static unsigned long t_src_scalar(struct r300_vertex_program_code *vp,
t_swizzle(GET_SWZ(src->Swizzle, 0)),
t_src_class(src->File),
src->Negate ? RC_MASK_XYZW : RC_MASK_NONE) |
- (src->RelAddr << 4);
+ (src->RelAddr << 4) | (src->Abs << 3);
}
static int valid_dst(struct r300_vertex_program_code *vp,
@@ -487,6 +488,44 @@ static void allocate_temporary_registers(struct r300_vertex_program_compiler * c
}
}
+/**
+ * R3xx-R4xx vertex engine does not support the Absolute source operand modifier
+ * and the Saturate opcode modifier. Only Absolute is currently transformed.
+ */
+static int transform_nonnative_modifiers(
+ struct radeon_compiler *c,
+ struct rc_instruction *inst,
+ void* unused)
+{
+ const struct rc_opcode_info *opcode = rc_get_opcode_info(inst->U.I.Opcode);
+ unsigned i;
+
+ /* Transform ABS(a) to MAX(a, -a). */
+ for (i = 0; i < opcode->NumSrcRegs; i++) {
+ if (inst->U.I.SrcReg[i].Abs) {
+ struct rc_instruction *new_inst;
+ unsigned temp;
+
+ inst->U.I.SrcReg[i].Abs = 0;
+
+ temp = rc_find_free_temporary(c);
+
+ new_inst = rc_insert_new_instruction(c, inst->Prev);
+ new_inst->U.I.Opcode = RC_OPCODE_MAX;
+ new_inst->U.I.DstReg.File = RC_FILE_TEMPORARY;
+ new_inst->U.I.DstReg.Index = temp;
+ new_inst->U.I.SrcReg[0] = inst->U.I.SrcReg[i];
+ new_inst->U.I.SrcReg[1] = inst->U.I.SrcReg[i];
+ new_inst->U.I.SrcReg[1].Negate ^= RC_MASK_XYZW;
+
+ inst->U.I.SrcReg[i].File = RC_FILE_TEMPORARY;
+ inst->U.I.SrcReg[i].Index = temp;
+ inst->U.I.SrcReg[i].Negate = 0;
+ inst->U.I.SrcReg[i].RelAddr = 0;
+ }
+ }
+ return 1;
+}
/**
* Vertex engine cannot read two inputs or two constants at the same time.
@@ -625,15 +664,27 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler* compiler)
{ &r300_transform_trig_scale_vertex, 0 }
};
radeonLocalTransform(&compiler->Base, 2, transformations);
+
+ debug_program_log(compiler, "after native rewrite");
} else {
struct radeon_program_transformation transformations[] = {
{ &r300_transform_vertex_alu, 0 },
{ &radeonTransformTrigSimple, 0 }
};
radeonLocalTransform(&compiler->Base, 2, transformations);
- }
- debug_program_log(compiler, "after native rewrite");
+ debug_program_log(compiler, "after native rewrite");
+
+ /* Note: This pass has to be done seperately from ALU rewrite,
+ * because it needs to check every instruction.
+ */
+ struct radeon_program_transformation transformations2[] = {
+ { &transform_nonnative_modifiers, 0 },
+ };
+ radeonLocalTransform(&compiler->Base, 1, transformations2);
+
+ debug_program_log(compiler, "after emulate modifiers");
+ }
{
/* Note: This pass has to be done seperately from ALU rewrite,