Module: Mesa Branch: master Commit: e6d798948e00e255b80a69562a7d262257f77ee5 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=e6d798948e00e255b80a69562a7d262257f77ee5
Author: Marek Olšák <[email protected]> Date: Wed Dec 1 16:44:22 2010 +0100 r300/compiler: implement and lower OPCODE_CLAMP Needed for st/vega. --- src/gallium/drivers/r300/r300_tgsi_to_rc.c | 2 +- .../drivers/dri/r300/compiler/radeon_opcodes.c | 7 +++++++ .../drivers/dri/r300/compiler/radeon_opcodes.h | 3 +++ .../drivers/dri/r300/compiler/radeon_program_alu.c | 18 ++++++++++++++++++ 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 33448bf..15a3239 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 da495a3..113b276 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 d3f639c..7e66610 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 106e034..01c2e74 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; _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
