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.c | |
| 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.c')
| -rw-r--r-- | src/gallium/state_trackers/vega/shaders_cache.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/src/gallium/state_trackers/vega/shaders_cache.c b/src/gallium/state_trackers/vega/shaders_cache.c index 76bac5139f..e9873eb18b 100644 --- a/src/gallium/state_trackers/vega/shaders_cache.c +++ b/src/gallium/state_trackers/vega/shaders_cache.c @@ -53,12 +53,13 @@ * 1) Paint generation (color/gradient/pattern) * 2) Image composition (normal/multiply/stencil) * 3) Color transform - * 4) Extended blend (multiply/screen/darken/lighten) - * 5) Mask - * 6) Premultiply/Unpremultiply - * 7) Color transform (to black and white) + * 4) Per-channel alpha generation + * 5) Extended blend (multiply/screen/darken/lighten) + * 6) Mask + * 7) Premultiply/Unpremultiply + * 8) Color transform (to black and white) */ -#define SHADER_STAGES 7 +#define SHADER_STAGES 8 struct cached_shader { void *driver_shader; @@ -301,6 +302,20 @@ create_shader(struct pipe_context *pipe, } /* fourth stage */ + sh = SHADERS_GET_ALPHA_SHADER(id); + switch (sh) { + case VEGA_ALPHA_NORMAL_SHADER: + case VEGA_ALPHA_PER_CHANNEL_SHADER: + shaders[idx] = &shaders_alpha_asm[ + (sh >> SHADERS_ALPHA_SHIFT) - 1]; + assert(shaders[idx]->id == sh); + idx++; + break; + default: + break; + } + + /* fifth stage */ sh = SHADERS_GET_BLEND_SHADER(id); switch (sh) { case VEGA_BLEND_MULTIPLY_SHADER: @@ -315,7 +330,7 @@ create_shader(struct pipe_context *pipe, break; } - /* fifth stage */ + /* sixth stage */ sh = SHADERS_GET_MASK_SHADER(id); switch (sh) { case VEGA_MASK_SHADER: @@ -327,7 +342,7 @@ create_shader(struct pipe_context *pipe, break; } - /* sixth stage */ + /* seventh stage */ sh = SHADERS_GET_PREMULTIPLY_SHADER(id); switch (sh) { case VEGA_PREMULTIPLY_SHADER: @@ -341,7 +356,7 @@ create_shader(struct pipe_context *pipe, break; } - /* seventh stage */ + /* eighth stage */ sh = SHADERS_GET_BW_SHADER(id); switch (sh) { case VEGA_BW_SHADER: |