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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-08-07 11:14:35 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-11-13 19:13:27 +0200 |
| commit | 40a08e0d6a57cc79ee72a62aeedec20cae774ed5 (patch) | |
| tree | 5f70ae36404d229f028b9b10309c44e7272bad94 /src/mesa/main/texformat.c | |
| parent | 7988ff2fd1f56b2c78809937eaa663de02a144bc (diff) | |
| download | external_mesa3d-40a08e0d6a57cc79ee72a62aeedec20cae774ed5.zip external_mesa3d-40a08e0d6a57cc79ee72a62aeedec20cae774ed5.tar.gz external_mesa3d-40a08e0d6a57cc79ee72a62aeedec20cae774ed5.tar.bz2 | |
i915: Use L8A8 instead of I8 to simulate A8 on gen2
Gen2 doesn't support the A8 texture format. Currently the driver
substitutes it with I8, but that results in incorrect RGB values.
Use A8L8 instead. We end up wasting a bit of memory, but at least
we should get the correct results.
v2: Handle the fallback in _mesa_choose_tex_format() and also
do it for all alpha formats that currently accept A8
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=72819
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80050
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38873
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'src/mesa/main/texformat.c')
| -rw-r--r-- | src/mesa/main/texformat.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c index 832e661..ec16af9 100644 --- a/src/mesa/main/texformat.c +++ b/src/mesa/main/texformat.c @@ -155,12 +155,14 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target, case GL_ALPHA4: case GL_ALPHA8: RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8); + RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM); break; case GL_ALPHA12: case GL_ALPHA16: RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM16); RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8); + RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM); break; /* Luminance formats */ @@ -224,6 +226,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target, case GL_COMPRESSED_ALPHA_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8); + RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM); break; case GL_COMPRESSED_LUMINANCE_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM8); |