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st/vega: Add some comments to pipeline shaders.

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This commit is contained in:
Chia-I Wu
2010-12-03 20:16:37 +08:00
parent 6c33e820d5
commit a09baf1668
1 changed files with 11 additions and 2 deletions
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src/gallium/state_trackers/vega/asm_fill.h
+11 -2
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@@ -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),