diff options
| author | Chia-I Wu <[email protected]> | 2010-12-03 20:16:37 +0800 |
|---|---|---|
| committer | Chia-I Wu <[email protected]> | 2010-12-04 13:19:29 +0800 |
| commit | a09baf166826aba5be7dcf2347047129730f1628 (patch) | |
| tree | fb646c6f1b89c9d549309deff6225cd47af89c53 /src | |
| parent | 6c33e820d5fe740ac4735d8bab864177dd1b2f14 (diff) | |
st/vega: Add some comments to pipeline shaders.
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/state_trackers/vega/asm_fill.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/gallium/state_trackers/vega/asm_fill.h b/src/gallium/state_trackers/vega/asm_fill.h index 70ff153ca90..f9fcf4963b1 100644 --- a/src/gallium/state_trackers/vega/asm_fill.h +++ b/src/gallium/state_trackers/vega/asm_fill.h @@ -47,6 +47,10 @@ solid_fill( struct ureg_program *ureg, ureg_MOV(ureg, *out, constant[2]); } +/** + * Perform frag-coord-to-paint-coord transform. The transformation is in + * CONST[4..6]. + */ #define PAINT_TRANSFORM \ ureg_MOV(ureg, ureg_writemask(temp[0], TGSI_WRITEMASK_XY), in[0]); \ ureg_MOV(ureg, \ @@ -75,6 +79,7 @@ linear_grad( struct ureg_program *ureg, { PAINT_TRANSFORM + /* grad = DP2((x, y), CONST[2].xy) * CONST[2].z */ ureg_MUL(ureg, temp[0], ureg_scalar(constant[2], TGSI_SWIZZLE_Y), ureg_scalar(ureg_src(temp[4]), TGSI_SWIZZLE_Y)); @@ -84,6 +89,7 @@ linear_grad( struct ureg_program *ureg, ureg_src(temp[0])); ureg_MUL(ureg, temp[2], ureg_src(temp[1]), ureg_scalar(constant[2], TGSI_SWIZZLE_Z)); + ureg_TEX(ureg, *out, TGSI_TEXTURE_1D, ureg_src(temp[2]), sampler[0]); } @@ -134,6 +140,7 @@ pattern( struct ureg_program *ureg, { PAINT_TRANSFORM + /* (s, t) = (x / tex_width, y / tex_height) */ ureg_RCP(ureg, temp[0], ureg_swizzle(constant[3], TGSI_SWIZZLE_Z, @@ -149,6 +156,7 @@ pattern( struct ureg_program *ureg, ureg_writemask(temp[1], TGSI_WRITEMASK_Y), ureg_src(temp[1]), ureg_src(temp[0])); + ureg_TEX(ureg, *out, TGSI_TEXTURE_2D, ureg_src(temp[1]), sampler[0]); } @@ -160,6 +168,7 @@ paint_degenerate( struct ureg_program *ureg, struct ureg_dst *temp, struct ureg_src *constant) { + /* CONST[3].y is 1.0f */ ureg_MOV(ureg, temp[1], ureg_scalar(constant[3], TGSI_SWIZZLE_Y)); ureg_TEX(ureg, *out, TGSI_TEXTURE_1D, ureg_src(temp[1]), sampler[0]); } @@ -172,8 +181,8 @@ color_transform( struct ureg_program *ureg, struct ureg_dst *temp, struct ureg_src *constant) { - ureg_MUL(ureg, temp[1], ureg_src(temp[0]), constant[0]); - ureg_ADD(ureg, temp[1], ureg_src(temp[1]), constant[1]); + ureg_MAD(ureg, temp[1], ureg_src(temp[0]), constant[0], constant[1]); + /* clamp to [0.0f, 1.0f] */ ureg_CLAMP(ureg, temp[1], ureg_src(temp[1]), ureg_scalar(constant[3], TGSI_SWIZZLE_X), |