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Use MAX_COMBINER_TERMS instead of 4.
Rename some vars.
Update comments.
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The code's cleaner and a step toward supporting float-valued texture sampling.
Some optimizations for common cases can be added and re-enabled...
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A shader program may consist of multiple shaders (source code units).
If we find there are unresolved functions after compiling the unit that
defines main(), we'll concatenate all the respective vertex or fragment
shaders then recompile.
This isn't foolproof but should work in most cases.
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We weren't putting the right colors into the back buffer in this mode.
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This fixes an issue when compiling glCallList() into another display list
when the mode is GL_COMPILE_AND_EXECUTE.
Before, the call to glCallList() called _mesa_save_CallList() which called
neutral_CallList() which then called _mesa_save_CallList() again. In the
end, the parent display list contained two calls to the child display list
instead of one.
Let's be on the lookout for regressions caused by this change for a while
before we cherry-pick this elsewhere.
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This fixes broken variable indexing into the gl_Eye/ObjectPlaneS/T/R/Q arrays.
See bug 20986.
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The 'dots' register wasn't getting properly un-negated and un-swizzled
after emitting the code for back-face lighting. So, if more than one
light source was enabled, the specular exponent for the next light source
was wrong.
During execution we were evaluating pow(x, y) where y was negative instead
of positive. This led to the outcome being zero or NaN.
This fixes the occasional black triangles seen in isosurf when hacked to
enable two-sided lighting.
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We don't upload the pixels with the CPU in that case, so the map will
only serve as a way of triggering cache flushes over a bunch of data we
don't touch.
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i965 can either do SRGBA8_REV format or SARGB8 format, but not SRGBA8.
Could add SRGBA8_REV support to mesa, but simply use SARGB8 for now.
While here, also add true srgb luminance / luminance_alpha support -
unfortunately the published docs fail to mention which asics support
this, tested on g43 so assume this works on any g4x.
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need to respect the user-supplied base format, not the one derived from
the texture format actually used.
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This is a (partial) backport of the signed texture format support in OGL 3.1.
Since it wasn't promoted from an existing extension roll our own.
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use color format constants instead of magic numbers
remove handling of cpp 0 or 3 (neither is possible) in various places
don't misconfigure 8 bit surface blits as rgb565
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The default texture is used when a sampler uses an incomplete texture.
This change fixes the piglit fp-incomplete test.
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- remove disabled code
- silence compiler warnings (uinitialized values)
- remove unneeded code
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Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>
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Fixes Sun cc error:
"r300_cmdbuf.c", line 142: invalid cast expression
Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>
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Since core Mesa MAX_TEXTURE_LEVELS was bumped, we were incorrectly advertising
a maximum texture size of 4096 on older chips, causing corrupted menu text in
Extreme Tux Racer or Armagetron.
Also make sure our texture image array can actually hold all the mipmap levels
we support...
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To distinguish from the -0.2 version still being maintained on the
gallium-mesa-7.4 branch. There are already greater interface changes
between these two branches than there were between -0.2 and -0.1.
Also stop injecting Tungsten into the vendor string - the Gallium in
the renderer string should be sufficient.
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The FBO pixel coordinate system, with (0,0) as the
upper-left pixel, is inverted in Y compared to the
normal OpenGL pixel coordinate system, which has
(0,0) as its lower-left pixel.
Viewport and polygon stipple are sensitive to this
inversion; so is point rasterization. The basic
fix is simple: when rendering to an FBO, instead
of the normal RASTRULE_UPPER_RIGHT that's
appropriate for OpenGL windows, use the Y inversion
RASTRULE_LOWER_RIGHT.
Unfortunately, current Intel documentation has this
value listed as "Reserved, but not seen as useful".
It does work on at least some i965-class devices,
though; and the worst that could happen if an
older device didn't support it would be incorrect
point rasterization to FBOs, which is what happens
already, so this fix is at least no worse than what
happens presently, and is better for some (and possibly
all) i965-class devices.
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This also cuts instructions by just using the existing bit in the payload
rather than computing it from the determinant in the SF unit and passing it
as a varying down to the WM. Something still goes wrong with getting the
backface color right, but a simpler shader appears to get the right result.
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Previously, we would sample (f,glFrontFacing,undef,undef) instead of the
(f,0,0,1) that fragment.fogcoord is supposed to return. Due to
glFrontFacing's presence in FOGC.y, we'll still give bad results there when
glFrontFacing is used.
Bug #19122, piglit testcase fp-fog.
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Turns out that XXX comment was important. We weren't flagging the WM to
re-update with the statistics enable, so we got zeroes out of our query.
Bug #20740, fixes piglit occlusion_query test.
Signed-off-by: Eric Anholt <eric@anholt.net>
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This was used to indicate OpenGL's lower-left origin for fragment window
coordinates for polygon stipple and gl_FragCoord.
Now:
- fragment coordinate origin is always upper-left corner
- GL polygon stipple is inverted and shifted before given to gallium
- GL fragment programs that use INPUT[WPOS] are modified to use an
inverted window coord which is placed in a temp register.
Note: the origin_lower_left field still exists in pipe_rasterizer_state.
Remove it when all the drivers, etc. no longer reference it.
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Actually, window width - 1, height - 1
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This is a check-point commit; not turned on yet.
Use the linear scan register allocation algorithm to re-allocate temporary
registers. This is done by computing the live intervals for registers and
reallocating temps with that information.
For some shaders this dramatically reduces the number of temp registers
needed.
For the time being we give up on a few cases such as relative-indexed temps
and subroutine calls (but we inline most GLSL functions anyway).
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