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multisample enable is enabled by default, however gl mandates multisample
rendering rules only apply if there's also a multisampled buffer.
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This disallows vertex shader texture sampling. See bugs 16157, 13838.
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Since GL_ARB_vertex_buffer_object protocol isn't supported yet, these
changes are innocuous.
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This fixes a failure for cases like:
vec4 v;
v[1] *= 2.0;
The v[1] actually acts like a writemask, equivalent to v.y
The fix is a bit convoluted, but will do for now.
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Before, the presence of a 'return' statement always prevented inlining
a function. This was because we didn't want to accidentally return from
the _calling_ function. We still need the semantic of 'return' when inlining
but we can't always use unconditional branches/jumps (GPUs don't always
support arbitrary branching).
Now, we allow inlining functions w/ return if the return is the last
statement in the function. This fixes the common case of a function
that returns a value, such as:
vec4 square(const in vec4 x)
{
return x * x;
}
which effectively compiles into:
vec4 square(const in vec4 x)
{
__retVal = x * x;
return;
}
The 'return' can be no-op'd now and we can inline the function.
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These asserts are of questionable use at the moment with things in flux.
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first level of the mipmap. fix #16210
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Improve the --with-dri-drivers help text so that users are aware that
they should install the swrast DRI driver.
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This isn't complete yet. It does cover the two most common usage cases,
though, and at least the third one (POINT_DISTANCE_ATTENUATION) is possible,
so I'll do that later.
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. There is both a per-texture unit and a per-texture object (at least for
OpenGL 1.4); this should now be supported properly.
. The LOD bias calculation in r300_state has been simplified and corrected
(need to multiply by 32 instead of 31, and ensure clamping)
. do not clamp LOD bias in TexEnv, as that behaviour conflicts with what
the spec says
. set Const.MaxTextureLodBias properly
. remove the no_neg_lod_bias property; if somebody can explain what
it's good for, we can add it back in, but according to Google, nobody
seems to use it
. removed some dead code and unused variables
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Okay, this time it's for real, and for good. This should be a perma-fix.
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*puts yet another paper bag over head*
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The operation doesn't really make sense. It triggered a bug in the r300 DRI
driver (and possibly other drivers that simulate 1D textures via 2D textures).
I've added an isolated test case for this bug to Piglit, so everybody wins.
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Since the gl pkg-config file doesn't convey any specifics about the
backend in use, this adds a new pkg-config file for when DRI is in use.
This can be used by the xserver build to determine if the DRI and/or
GLX extensions are appropriate.
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Rather than just defining HAVE_POSIX_MEMALIGN on Linux, check whether
the function exists on all platforms and define the macro if it is.
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Nothing would get drawn as the negative coordinates broke the rectangle
intersection code that used unsigned ints. Tested with copypix demo and
sliding the copy to the upper left.
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This disables the textured copy implementation on 965, which didn't appear
to work (mesa copypix demo, disable the blit path, move so that regions don't
overlap and textured is used, and you get garbage). If we resurrect this for
i965, I'd rather it used the 915-style metaops instead. Current metaops code
left in place so that whoever picks it up has a reference.
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Mesa demos tend to leave blending on but in GL_ONE/GL_ZERO, or
GL_SRC_ALPHA/GL_ONE_MINUS_SRC_ALPHA with a source alpha of 1.0.
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Both had some useful bits for the other.
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Taken from commit bad6e175cf59cce630c37d73f6e71f3a4de50ae6.
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This matches 965.
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Since the asm_subdirs target does not actually create a file, make will
always consider that it needs to be rebuilt. If libmesa.a and libglapi.a
have asm_subdirs as a prerequisite, then they will always need to be
rebuilt, too. The correct order will be preserved by the default target,
though.
This should fix #16358.
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If `make install' is run without running `make' first, the $(LIB_DIR)
will not be created. This also changes the mkdir a little bit so that it
isn't run if necessary and added `-p' so that it is immune to races.
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