diff options
| author | Marek Olšák <[email protected]> | 2012-01-23 03:11:17 +0100 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2012-01-25 12:35:18 +0100 |
| commit | bc1c8369384b5e16547c5bf9728aa78f8dfd66cc (patch) | |
| tree | a09267d88b2c604491a607467e28a7f8fbae4146 /src/gallium/drivers/nvfx/nvfx_screen.c | |
| parent | c2e2b58a58880c9b9f189fc154205e99144e9502 (diff) | |
st/mesa: do vertex and fragment color clamping in shaders
For ARB_color_buffer_float. Most hardware can't do it and st/mesa is
the perfect place for a fallback.
The exceptions are:
- r500 (vertex clamp only)
- nv50 (both)
- nvc0 (both)
- softpipe (both)
We also have to take into account that r300 can do CLAMPED vertex colors only,
while r600 can do UNCLAMPED vertex colors only. The difference can be expressed
with the two new CAPs.
Diffstat (limited to 'src/gallium/drivers/nvfx/nvfx_screen.c')
| -rw-r--r-- | src/gallium/drivers/nvfx/nvfx_screen.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/gallium/drivers/nvfx/nvfx_screen.c b/src/gallium/drivers/nvfx/nvfx_screen.c index ead777de784..2a3289f04fd 100644 --- a/src/gallium/drivers/nvfx/nvfx_screen.c +++ b/src/gallium/drivers/nvfx/nvfx_screen.c @@ -72,6 +72,7 @@ nvfx_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER: case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT: case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER: + case PIPE_CAP_VERTEX_COLOR_CLAMPED: return 1; case PIPE_CAP_DEPTH_CLIP_DISABLE: return 0; // TODO: implement depth clamp @@ -80,7 +81,8 @@ nvfx_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: case PIPE_CAP_TGSI_INSTANCEID: case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR: - case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL: + case PIPE_CAP_FRAGMENT_COLOR_CLAMPED: + case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: case PIPE_CAP_SEAMLESS_CUBE_MAP: case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE: case PIPE_CAP_SHADER_STENCIL_EXPORT: |