diff options
| author | Brian Paul <[email protected]> | 2010-07-02 10:16:05 -0600 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2010-07-02 10:16:08 -0600 |
| commit | 6e83420ee0ccb2228fab0f86a6e8bf8a6aefe57a (patch) | |
| tree | 58d87ed3ba566a4385b3d3508b0cac7c24b62b5b /src/mesa/main/texenvprogram.c | |
| parent | 7a5a0b205eb31ba72e5313b783b8815bcf8fa833 (diff) | |
mesa: fix texenv generation when num color bufs == 0
Before, if there were no color buffers enabled (with glDrawBuffers(GL_NONE))
when the texenv program was generated, we'd emit writes to OUTPUT[1] but
the OutputsWritten mask was 0. This inconsistency caused an assertion to
fail later in the Mesa->TGSI translation.
Fixes fd.o bug 28169
NOTE: this is a candidate for the 7.8 branch (and depends on commit
b6b9b17d27c570cc99ae339e595cf2f63ca5e8d7).
Diffstat (limited to 'src/mesa/main/texenvprogram.c')
| -rw-r--r-- | src/mesa/main/texenvprogram.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c index 6aa89d1e619..9fa8f02a8b0 100644 --- a/src/mesa/main/texenvprogram.c +++ b/src/mesa/main/texenvprogram.c @@ -1203,11 +1203,14 @@ emit_texenv(struct texenv_fragment_program *p, GLuint unit) else alpha_saturate = GL_FALSE; - /* If this is the very last calculation, emit direct to output reg: + /* If this is the very last calculation (and various other conditions + * are met), emit directly to the color output register. Otherwise, + * emit to a temporary register. */ if (key->separate_specular || unit != p->last_tex_stage || alpha_shift || + key->num_draw_buffers != 1 || rgb_shift) dest = get_temp( p ); else |