diff options
| author | Eric Anholt <[email protected]> | 2010-10-02 23:27:31 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2010-10-02 23:48:14 -0700 |
| commit | a7fa00dfc5ab5782b2e497fbf4ca292dde69cdbd (patch) | |
| tree | cb4de56e2f3c6c647cbfba0c61499f4d51090d76 /src/mesa | |
| parent | 4fb0c92c6986cf4e88296bab8837320210f1794f (diff) | |
i965: Set up swizzling of shadow compare results for GL_DEPTH_TEXTURE_MODE.
The brw_wm_surface_state.c handling of GL_DEPTH_TEXTURE_MODE doesn't
apply to shadow compares, which always return an intensity value. The
texture swizzles can do the job for us.
Fixes:
glsl1-shadow2D(): 1
glsl1-shadow2D(): 3
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c index 9ca8e709f55..66106408c9e 100644 --- a/src/mesa/drivers/dri/i965/brw_wm.c +++ b/src/mesa/drivers/dri/i965/brw_wm.c @@ -342,13 +342,44 @@ static void brw_wm_populate_key( struct brw_context *brw, if (unit->_ReallyEnabled) { const struct gl_texture_object *t = unit->_Current; const struct gl_texture_image *img = t->Image[0][t->BaseLevel]; + + key->tex_swizzles[i] = SWIZZLE_NOOP; + + /* GL_DEPTH_TEXTURE_MODE is normally handled through + * brw_wm_surface_state, but it applies to shadow compares as + * well and our shadow compares always return the result in + * all 4 channels. + */ + if (t->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) { + if (t->DepthMode == GL_ALPHA) { + key->tex_swizzles[i] = + MAKE_SWIZZLE4(SWIZZLE_ZERO, + SWIZZLE_ZERO, + SWIZZLE_ZERO, + SWIZZLE_X); + } else if (t->DepthMode == GL_LUMINANCE) { + key->tex_swizzles[i] = + MAKE_SWIZZLE4(SWIZZLE_X, + SWIZZLE_X, + SWIZZLE_X, + SWIZZLE_ONE); + } + } + if (img->InternalFormat == GL_YCBCR_MESA) { key->yuvtex_mask |= 1 << i; if (img->TexFormat == MESA_FORMAT_YCBCR) key->yuvtex_swap_mask |= 1 << i; } - key->tex_swizzles[i] = t->_Swizzle; + key->tex_swizzles[i] = MAKE_SWIZZLE4(GET_SWZ(key->tex_swizzles[i], + GET_SWZ(t->_Swizzle, 0)), + GET_SWZ(key->tex_swizzles[i], + GET_SWZ(t->_Swizzle, 1)), + GET_SWZ(key->tex_swizzles[i], + GET_SWZ(t->_Swizzle, 2)), + GET_SWZ(key->tex_swizzles[i], + GET_SWZ(t->_Swizzle, 3))); } else { key->tex_swizzles[i] = SWIZZLE_NOOP; |