diff options
| author | Chia-I Wu <olv@lunarg.com> | 2010-12-04 12:03:07 +0800 |
|---|---|---|
| committer | Chia-I Wu <olv@lunarg.com> | 2010-12-04 13:20:38 +0800 |
| commit | e8ff3931f801dffdfd54832c298351e933688235 (patch) | |
| tree | 44a830b96b474489bce1b7b02fa3d0008e799a35 /src/gallium/state_trackers/vega/shaders_cache.h | |
| parent | a19eaaa6c1956add5343295af7e9f682efa08d74 (diff) | |
st/vega: Add support for per-channel alpha.
Drawing an image in VG_DRAW_IMAGE_STENCIL mode produces per-channel
alpha for use in blending. Add a new shader stage to produce and save
it in TEMP[1].
For other modes that do not need per-channel alpha, the stage does
MOV TEMP[1], TEMP[0].wwww
Diffstat (limited to 'src/gallium/state_trackers/vega/shaders_cache.h')
| -rw-r--r-- | src/gallium/state_trackers/vega/shaders_cache.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/gallium/state_trackers/vega/shaders_cache.h b/src/gallium/state_trackers/vega/shaders_cache.h index 008e4f5b94..9265c547ed 100644 --- a/src/gallium/state_trackers/vega/shaders_cache.h +++ b/src/gallium/state_trackers/vega/shaders_cache.h @@ -36,6 +36,7 @@ struct shaders_cache; #define _SHADERS_PAINT_BITS 3 #define _SHADERS_IMAGE_BITS 2 #define _SHADERS_COLOR_TRANSFORM_BITS 1 +#define _SHADERS_ALPHA_BITS 2 #define _SHADERS_BLEND_BITS 3 #define _SHADERS_MASK_BITS 1 #define _SHADERS_PREMULTIPLY_BITS 2 @@ -44,7 +45,8 @@ struct shaders_cache; #define SHADERS_PAINT_SHIFT (0) #define SHADERS_IMAGE_SHIFT (SHADERS_PAINT_SHIFT + _SHADERS_PAINT_BITS) #define SHADERS_COLOR_TRANSFORM_SHIFT (SHADERS_IMAGE_SHIFT + _SHADERS_IMAGE_BITS) -#define SHADERS_BLEND_SHIFT (SHADERS_COLOR_TRANSFORM_SHIFT + _SHADERS_COLOR_TRANSFORM_BITS) +#define SHADERS_ALPHA_SHIFT (SHADERS_COLOR_TRANSFORM_SHIFT + _SHADERS_COLOR_TRANSFORM_BITS) +#define SHADERS_BLEND_SHIFT (SHADERS_ALPHA_SHIFT + _SHADERS_ALPHA_BITS) #define SHADERS_MASK_SHIFT (SHADERS_BLEND_SHIFT + _SHADERS_BLEND_BITS) #define SHADERS_PREMULTIPLY_SHIFT (SHADERS_MASK_SHIFT + _SHADERS_MASK_BITS) #define SHADERS_BW_SHIFT (SHADERS_PREMULTIPLY_SHIFT + _SHADERS_PREMULTIPLY_BITS) @@ -55,6 +57,7 @@ struct shaders_cache; #define SHADERS_GET_PAINT_SHADER(id) _SHADERS_GET_STAGE(PAINT, id) #define SHADERS_GET_IMAGE_SHADER(id) _SHADERS_GET_STAGE(IMAGE, id) #define SHADERS_GET_COLOR_TRANSFORM_SHADER(id) _SHADERS_GET_STAGE(COLOR_TRANSFORM, id) +#define SHADERS_GET_ALPHA_SHADER(id) _SHADERS_GET_STAGE(ALPHA, id) #define SHADERS_GET_BLEND_SHADER(id) _SHADERS_GET_STAGE(BLEND, id) #define SHADERS_GET_MASK_SHADER(id) _SHADERS_GET_STAGE(MASK, id) #define SHADERS_GET_PREMULTIPLY_SHADER(id) _SHADERS_GET_STAGE(PREMULTIPLY, id) @@ -73,6 +76,9 @@ enum VegaShaderType { VEGA_COLOR_TRANSFORM_SHADER = 1 << SHADERS_COLOR_TRANSFORM_SHIFT, + VEGA_ALPHA_NORMAL_SHADER = 1 << SHADERS_ALPHA_SHIFT, + VEGA_ALPHA_PER_CHANNEL_SHADER = 2 << SHADERS_ALPHA_SHIFT, + VEGA_BLEND_MULTIPLY_SHADER = 1 << SHADERS_BLEND_SHIFT, VEGA_BLEND_SCREEN_SHADER = 2 << SHADERS_BLEND_SHIFT, VEGA_BLEND_DARKEN_SHADER = 3 << SHADERS_BLEND_SHIFT, |