diff options
| author | Marek Olšák <maraeo@gmail.com> | 2010-04-17 02:43:47 +0200 |
|---|---|---|
| committer | Marek Olšák <maraeo@gmail.com> | 2010-04-17 02:43:47 +0200 |
| commit | 411d5063323ccdb85ec090f1c852fcc8e9cd0e64 (patch) | |
| tree | 029f20d8481e885cf287e8955773ed09ba1585c9 /src/mesa | |
| parent | f91a06eed27516b06d51cf437b9b165e8bcef35d (diff) | |
r300/compiler: add emulation of all mirrored-clamp wrap modes for NPOT textures
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_code.h | 3 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c | 18 |
2 files changed, 19 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_code.h b/src/mesa/drivers/dri/r300/compiler/radeon_code.h index 28bcd1029b..27274f0712 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_code.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_code.h @@ -115,7 +115,8 @@ typedef enum { typedef enum { RC_WRAP_NONE = 0, RC_WRAP_REPEAT, - RC_WRAP_MIRROR + RC_WRAP_MIRRORED_REPEAT, + RC_WRAP_MIRRORED_CLAMP } rc_wrap_mode; /** diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c b/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c index a8927acdff..0ca95d454b 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c @@ -233,7 +233,7 @@ int radeonTransformTEX( inst_frc->U.I.DstReg.Index = temp; inst_frc->U.I.DstReg.WriteMask = RC_MASK_XYZ; inst_frc->U.I.SrcReg[0] = inst->U.I.SrcReg[0]; - } else if (wrapmode == RC_WRAP_MIRROR) { + } else if (wrapmode == RC_WRAP_MIRRORED_REPEAT) { /* * Function: * f(v) = 1 - abs(frac(v * 0.5) * 2 - 1) @@ -295,6 +295,22 @@ int radeonTransformTEX( inst_add->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_XYZ0; inst_add->U.I.SrcReg[1].Abs = 1; inst_add->U.I.SrcReg[1].Negate = RC_MASK_XYZ; + } else if (wrapmode == RC_WRAP_MIRRORED_CLAMP) { + /* + * Mirrored clamp modes are bloody simple, we just use abs + * to mirror [0, 1] into [-1, 0]. This works for + * all modes i.e. CLAMP, CLAMP_TO_EDGE, and CLAMP_TO_BORDER. + */ + struct rc_instruction *inst_mov; + + inst_mov = rc_insert_new_instruction(c, inst->Prev); + + inst_mov->U.I.Opcode = RC_OPCODE_MOV; + inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY; + inst_mov->U.I.DstReg.Index = temp; + inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZ; + inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0]; + inst_mov->U.I.SrcReg[0].Abs = 1; } /* Preserve W for TXP/TXB. */ |