diff options
Diffstat (limited to 'src/gallium/state_trackers/vega')
| -rw-r--r-- | src/gallium/state_trackers/vega/asm_fill.h | 80 |
1 files changed, 72 insertions, 8 deletions
diff --git a/src/gallium/state_trackers/vega/asm_fill.h b/src/gallium/state_trackers/vega/asm_fill.h index a95e4c9efc..566f7c95f5 100644 --- a/src/gallium/state_trackers/vega/asm_fill.h +++ b/src/gallium/state_trackers/vega/asm_fill.h @@ -273,21 +273,71 @@ alpha_per_channel( struct ureg_program *ureg, } /** - * Emit instructions for the specified blend mode. Colors should be - * premultiplied. Two temporary registers are required. + * Premultiply src and dst. + */ +static INLINE void +blend_premultiply( struct ureg_program *ureg, + struct ureg_src src, + struct ureg_src src_channel_alpha, + struct ureg_src dst) +{ + /* premultiply src */ + ureg_MUL(ureg, + ureg_writemask(ureg_dst(src), TGSI_WRITEMASK_XYZ), + src, + src_channel_alpha); + /* premultiply dst */ + ureg_MUL(ureg, + ureg_writemask(ureg_dst(dst), TGSI_WRITEMASK_XYZ), + dst, + ureg_scalar(dst, TGSI_SWIZZLE_W)); +} + +/** + * Unpremultiply src. + */ +static INLINE void +blend_unpremultiply( struct ureg_program *ureg, + struct ureg_src src, + struct ureg_src one, + struct ureg_dst temp[1]) +{ + /* replace 0.0f by 1.0f before calculating reciprocal */ + ureg_CMP(ureg, + temp[0], + ureg_negate(ureg_scalar(src, TGSI_SWIZZLE_W)), + ureg_scalar(src, TGSI_SWIZZLE_W), + one); + ureg_RCP(ureg, temp[0], ureg_src(temp[0])); + + ureg_MUL(ureg, + ureg_writemask(ureg_dst(src), TGSI_WRITEMASK_XYZ), + src, + ureg_src(temp[0])); +} + +/** + * Emit instructions for the specified blend mode. Colors will be + * unpremultiplied. Two temporary registers are required. * - * XXX callers do not pass premultiplied colors! + * The output is written back to src. */ static INLINE void blend_generic(struct ureg_program *ureg, VGBlendMode mode, - struct ureg_dst out, struct ureg_src src, struct ureg_src src_channel_alpha, struct ureg_src dst, struct ureg_src one, struct ureg_dst temp[2]) { + struct ureg_dst out; + + blend_premultiply(ureg, src, src_channel_alpha, dst); + + /* blend in-place */ + out = ureg_dst(src); + switch (mode) { case VG_BLEND_SRC: ureg_MOV(ureg, out, src); @@ -355,6 +405,8 @@ blend_generic(struct ureg_program *ureg, assert(0); break; } + + blend_unpremultiply(ureg, src, one, temp); } static INLINE void @@ -366,12 +418,15 @@ blend_multiply( struct ureg_program *ureg, struct ureg_src *constant) { ureg_TEX(ureg, temp[2], TGSI_TEXTURE_2D, in[0], sampler[2]); - blend_generic(ureg, VG_BLEND_MULTIPLY, *out, + + blend_generic(ureg, VG_BLEND_MULTIPLY, ureg_src(temp[0]), ureg_src(temp[1]), ureg_src(temp[2]), ureg_scalar(constant[3], TGSI_SWIZZLE_Y), temp + 3); + + ureg_MOV(ureg, *out, ureg_src(temp[0])); } static INLINE void @@ -383,12 +438,15 @@ blend_screen( struct ureg_program *ureg, struct ureg_src *constant) { ureg_TEX(ureg, temp[2], TGSI_TEXTURE_2D, in[0], sampler[2]); - blend_generic(ureg, VG_BLEND_SCREEN, *out, + + blend_generic(ureg, VG_BLEND_SCREEN, ureg_src(temp[0]), ureg_src(temp[1]), ureg_src(temp[2]), ureg_scalar(constant[3], TGSI_SWIZZLE_Y), temp + 3); + + ureg_MOV(ureg, *out, ureg_src(temp[0])); } static INLINE void @@ -400,12 +458,15 @@ blend_darken( struct ureg_program *ureg, struct ureg_src *constant) { ureg_TEX(ureg, temp[2], TGSI_TEXTURE_2D, in[0], sampler[2]); - blend_generic(ureg, VG_BLEND_DARKEN, *out, + + blend_generic(ureg, VG_BLEND_DARKEN, ureg_src(temp[0]), ureg_src(temp[1]), ureg_src(temp[2]), ureg_scalar(constant[3], TGSI_SWIZZLE_Y), temp + 3); + + ureg_MOV(ureg, *out, ureg_src(temp[0])); } static INLINE void @@ -417,12 +478,15 @@ blend_lighten( struct ureg_program *ureg, struct ureg_src *constant) { ureg_TEX(ureg, temp[2], TGSI_TEXTURE_2D, in[0], sampler[2]); - blend_generic(ureg, VG_BLEND_LIGHTEN, *out, + + blend_generic(ureg, VG_BLEND_LIGHTEN, ureg_src(temp[0]), ureg_src(temp[1]), ureg_src(temp[2]), ureg_scalar(constant[3], TGSI_SWIZZLE_Y), temp + 3); + + ureg_MOV(ureg, *out, ureg_src(temp[0])); } static INLINE void |