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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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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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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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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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Signed-off-by: Brian Paul <brian.paul@tungstengraphics.com>
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Signed-off-by: Brian Paul <brian.paul@tungstengraphics.com>
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Add #include "glheader.h" for definition of __builtin_expect for compilers
that don't support it.
Signed-off-by: Brian Paul <brian.paul@tungstengraphics.com>
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See bug 14289
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This is just a hack. After we convert the 3D texcoord into a face plus 2D
texcoord we need to recompute the partial derivatives and mipmap LOD.
But we don't have the info to do that. Adjusting the original mipmap
level by -1 seems to give somewhat better results than before though.
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Refactoring of mine in 02d5ba849197e19843dad164239b51f18fb16faf broke it
by failing to understand that the masking was about sign extension.
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for Z unpacking
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If you have a GPU using this code and it has the offsets up in this space,
this fails.
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