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authorMarek Olšák <maraeo@gmail.com>2010-12-01 16:44:22 +0100
committerMarek Olšák <maraeo@gmail.com>2010-12-01 18:29:50 +0100
commite6d798948e00e255b80a69562a7d262257f77ee5 (patch)
treeb8e44c50564694cb4ab6273ce500ba4f92f8b45d
parent6f7c8c3cbf68ab9b587235198e19af30c1a60a82 (diff)
r300/compiler: implement and lower OPCODE_CLAMP
Needed for st/vega.
-rw-r--r--src/gallium/drivers/r300/r300_tgsi_to_rc.c2
-rw-r--r--src/mesa/drivers/dri/r300/compiler/radeon_opcodes.c7
-rw-r--r--src/mesa/drivers/dri/r300/compiler/radeon_opcodes.h3
-rw-r--r--src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c18
4 files changed, 29 insertions, 1 deletions
diff --git a/src/gallium/drivers/r300/r300_tgsi_to_rc.c b/src/gallium/drivers/r300/r300_tgsi_to_rc.c
index 33448bf0def..15a323989b2 100644
--- a/src/gallium/drivers/r300/r300_tgsi_to_rc.c
+++ b/src/gallium/drivers/r300/r300_tgsi_to_rc.c
@@ -57,7 +57,7 @@ static unsigned translate_opcode(unsigned opcode)
/* case TGSI_OPCODE_DP2A: return RC_OPCODE_DP2A; */
/* gap */
case TGSI_OPCODE_FRC: return RC_OPCODE_FRC;
- /* case TGSI_OPCODE_CLAMP: return RC_OPCODE_CLAMP; */
+ case TGSI_OPCODE_CLAMP: return RC_OPCODE_CLAMP;
case TGSI_OPCODE_FLR: return RC_OPCODE_FLR;
/* case TGSI_OPCODE_ROUND: return RC_OPCODE_ROUND; */
case TGSI_OPCODE_EX2: return RC_OPCODE_EX2;
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.c b/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.c
index da495a3afaa..113b27632a2 100644
--- a/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.c
@@ -67,6 +67,13 @@ struct rc_opcode_info rc_opcodes[MAX_RC_OPCODE] = {
.IsComponentwise = 1
},
{
+ .Opcode = RC_OPCODE_CLAMP,
+ .Name = "CLAMP",
+ .NumSrcRegs = 3,
+ .HasDstReg = 1,
+ .IsComponentwise = 1
+ },
+ {
.Opcode = RC_OPCODE_CMP,
.Name = "CMP",
.NumSrcRegs = 3,
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.h b/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.h
index d3f639c8701..7e666101276 100644
--- a/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.h
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_opcodes.h
@@ -50,6 +50,9 @@ typedef enum {
/** vec4 instruction: dst.c = ceil(src0.c) */
RC_OPCODE_CEIL,
+ /** vec4 instruction: dst.c = clamp(src0.c, src1.c, src2.c) */
+ RC_OPCODE_CLAMP,
+
/** vec4 instruction: dst.c = src0.c < 0.0 ? src1.c : src2.c */
RC_OPCODE_CMP,
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c b/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c
index 106e03495d8..01c2e74e7b3 100644
--- a/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c
@@ -217,6 +217,22 @@ static void transform_CEIL(struct radeon_compiler* c,
rc_remove_instruction(inst);
}
+static void transform_CLAMP(struct radeon_compiler *c,
+ struct rc_instruction *inst)
+{
+ /* CLAMP dst, src, min, max
+ * into:
+ * MIN tmp, src, max
+ * MAX dst, tmp, min
+ */
+ int tempreg = rc_find_free_temporary(c);
+ emit2(c, inst->Prev, RC_OPCODE_MIN, 0, dstreg(RC_FILE_TEMPORARY, tempreg),
+ inst->U.I.SrcReg[0], inst->U.I.SrcReg[2]);
+ emit2(c, inst->Prev, RC_OPCODE_MAX, inst->U.I.SaturateMode, inst->U.I.DstReg,
+ srcreg(RC_FILE_TEMPORARY, tempreg), inst->U.I.SrcReg[1]);
+ rc_remove_instruction(inst);
+}
+
static void transform_DP2(struct radeon_compiler* c,
struct rc_instruction* inst)
{
@@ -554,6 +570,7 @@ int radeonTransformALU(
switch(inst->U.I.Opcode) {
case RC_OPCODE_ABS: transform_ABS(c, inst); return 1;
case RC_OPCODE_CEIL: transform_CEIL(c, inst); return 1;
+ case RC_OPCODE_CLAMP: transform_CLAMP(c, inst); return 1;
case RC_OPCODE_DP2: transform_DP2(c, inst); return 1;
case RC_OPCODE_DPH: transform_DPH(c, inst); return 1;
case RC_OPCODE_DST: transform_DST(c, inst); return 1;
@@ -782,6 +799,7 @@ int r300_transform_vertex_alu(
switch(inst->U.I.Opcode) {
case RC_OPCODE_ABS: transform_r300_vertex_ABS(c, inst); return 1;
case RC_OPCODE_CEIL: transform_CEIL(c, inst); return 1;
+ case RC_OPCODE_CLAMP: transform_CLAMP(c, inst); return 1;
case RC_OPCODE_CMP: transform_r300_vertex_CMP(c, inst); return 1;
case RC_OPCODE_DP2: transform_r300_vertex_DP2(c, inst); return 1;
case RC_OPCODE_DP3: transform_r300_vertex_DP3(c, inst); return 1;