diff options
| author | Marek Olšák <maraeo@gmail.com> | 2010-12-01 16:44:22 +0100 |
|---|---|---|
| committer | Marek Olšák <maraeo@gmail.com> | 2010-12-01 18:29:50 +0100 |
| commit | e6d798948e00e255b80a69562a7d262257f77ee5 (patch) | |
| tree | b8e44c50564694cb4ab6273ce500ba4f92f8b45d /src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c | |
| parent | 6f7c8c3cbf68ab9b587235198e19af30c1a60a82 (diff) | |
r300/compiler: implement and lower OPCODE_CLAMP
Needed for st/vega.
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c | 18 |
1 files changed, 18 insertions, 0 deletions
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 106e03495d..01c2e74e7b 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; |