diff options
| author | Dave Airlie <[email protected]> | 2010-08-11 19:04:05 +1000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2010-10-02 17:03:15 +1000 |
| commit | 71a079fb4ecbd17703ac9b5e6d5ef622fd7bc50f (patch) | |
| tree | e25cc06ea21a61404882d3fad27f5c6e3199d614 /src/mesa/state_tracker/st_atom_texture.c | |
| parent | f31771343259d195ba243ce8d307831e495d5a2c (diff) | |
mesa/st: initial attempt at RG support for gallium drivers
passes all piglit RG tests with softpipe.
Diffstat (limited to 'src/mesa/state_tracker/st_atom_texture.c')
| -rw-r--r-- | src/mesa/state_tracker/st_atom_texture.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_atom_texture.c b/src/mesa/state_tracker/st_atom_texture.c index 981129621c7..029b0403462 100644 --- a/src/mesa/state_tracker/st_atom_texture.c +++ b/src/mesa/state_tracker/st_atom_texture.c @@ -52,7 +52,7 @@ * * \param format PIPE_FORMAT_*. * \param swizzle Texture swizzle, a bitmask computed using MAKE_SWIZZLE4. - * \param depthmode One of GL_LUMINANCE, GL_INTENSITY, GL_ALPHA. + * \param depthmode One of GL_LUMINANCE, GL_INTENSITY, GL_ALPHA, GL_RED. */ static GLuint apply_depthmode(enum pipe_format format, GLuint swizzle, GLenum depthmode) @@ -96,6 +96,14 @@ static GLuint apply_depthmode(enum pipe_format format, else if (swiz[i] < SWIZZLE_W) swiz[i] = SWIZZLE_ZERO; break; + case GL_RED: + /* Rewrite reads W to 1, XYZ to X00 */ + for (i = 0; i < 4; i++) + if (swiz[i] == SWIZZLE_W) + swiz[i] = SWIZZLE_ONE; + else if (swiz[i] == SWIZZLE_Y || swiz[i] == SWIZZLE_Z) + swiz[i] = SWIZZLE_ZERO; + break; } return MAKE_SWIZZLE4(swiz[0], swiz[1], swiz[2], swiz[3]); |