diff options
| author | Ian Romanick <[email protected]> | 2011-09-09 14:14:42 -0700 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2011-09-19 12:02:20 -0700 |
| commit | 113e8167de4500ea8b12176a938cbc4753f3a923 (patch) | |
| tree | f58b3776805554cde05fdcc406af0ced5dc2c895 /src/mesa/main/extensions.c | |
| parent | 3538bffa7287ebef5f2dc4d2e4491aaf6e68b09e (diff) | |
mesa: Remove support for GL_EXT_blend_logic_op
Support is removed for four reasons:
1. The implementation was broken with respect to separate blend
equations. The GL_EXT_blend_equation_separate spec says:
"If EXT_blend_logic_op and EXT_blend_equation_separate are both
supported, the logic op blend equation should be supported separately
for RGB and alpha as with the other blend equation modes."
But Mesa's implementation of GL_LOGIC_OP specifically forbids this.
2. No hardware supported by Mesa can support separate blend equations
involving GL_LOGIC_OP.
3. No applications could be found that use this extension.
4. No other Linux OpenGL drivers support this extension.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Cc: Brian Paul <[email protected]>
Diffstat (limited to 'src/mesa/main/extensions.c')
| -rw-r--r-- | src/mesa/main/extensions.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c index a3b6f5611e9..e1b8f8df03a 100644 --- a/src/mesa/main/extensions.c +++ b/src/mesa/main/extensions.c @@ -153,7 +153,6 @@ static const struct extension extension_table[] = { { "GL_EXT_blend_color", o(EXT_blend_color), GL, 1995 }, { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate), GL, 2003 }, { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate), GL, 1999 }, - { "GL_EXT_blend_logic_op", o(EXT_blend_logic_op), GL, 1995 }, { "GL_EXT_blend_minmax", o(EXT_blend_minmax), GL | ES1 | ES2, 1995 }, { "GL_EXT_blend_subtract", o(EXT_blend_subtract), GL, 1995 }, { "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint), GL, 1996 }, @@ -471,7 +470,6 @@ _mesa_enable_sw_extensions(struct gl_context *ctx) ctx->Extensions.EXT_blend_color = GL_TRUE; ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; ctx->Extensions.EXT_blend_func_separate = GL_TRUE; - ctx->Extensions.EXT_blend_logic_op = GL_TRUE; ctx->Extensions.EXT_blend_minmax = GL_TRUE; ctx->Extensions.EXT_blend_subtract = GL_TRUE; ctx->Extensions.EXT_depth_bounds_test = GL_TRUE; |