glsl: fix link failure for variable-indexed varying output arrays
If the vertex shader writes to a varying array with a variable index,
mark all the elements of that array as being written.
For example, if the vertex shader does:
for (i = 0; i < 4; i++)
gl_TexCoord[i] = expr;
Mark all texcoord outputs as being written, not just the first.
Linking will fail if a fragment shader tries to read an input that's not
written by the vertex shader. Before this fix, this linker test could fail.
Obviously, the color of fragments produced by DrawPixels is not constant,
even if the current vertex array / vertex program state indicates that the
color for normal rendering will be constant. Therefore, we need to override
certain optimisations that have been added to texenvprogram.c
Signed-off-by: Nicolai Haehnle <nhaehnle@gmail.com>
mesa: increase MAX_UNIFORMS to 1024 (of vec4 type)
Old limit was 256. Note that no arrays are declared to this size.
The only place we have to be careful about raising this limit is the
prog_src/dst_register Index bitfields. These have been bumped up too.
Added assertions to check we don't exceed the bitfield in the future too.
progs/trivial: Label program windows with actual program name
Each of these programs previously called itself "First Tri" which was a
little confusing. Could have left one as "First Tri", but the trouble
then is that people would still clone that file & we'd end up with
another thousand first tri apps...
gallium: Disable i965simple pipe driver after it was broken
It is only the i965simple pipe driver that was broken
in the gallium-texture-transfere merge that is being
disabled, mothing more nothing less.
FYI, there never where working i965 hardware support
in gallium anyways.
Note: the default value for EmitCondCodes is FALSE. This means the GLSL
compiler will emit code like this:
SEQ TEMP[0].x, A, B;
IF TEMP[0].x;
...
ENDIF
But if EmitCondCodes is TRUE, condition codes will be used instead:
SEQ.C TEMP[0].x, A, B;
IF (NE.xxxx);
...
ENDIF
i965: tell GLSL compiler to emit code using condition codes
The default for EmitCondCodes got flipped when gallium-0.2 was merged.
This fixes GLSL if/else/endif regressions.
Drivers that use GLSL should always explicitly set the flag to be safe.
R3xx/R5xx fragment program texture constants must come from a hardware
register instead of the constant file, so we redirect if necessary during
the native rewrite phase.
The symptoms of this bug started appearing when the Mesa fixed function
texenvprogram code started using STATE_CURRENT_ATTRIB constants for
texture coordinates when the corresponding attributes were constant across
all vertices.
Signed-off-by: Nicolai Haehnle <nhaehnle@gmail.com>
radeon-gallium: Clean out extensions explicitly enabled by Mesa.
This cleans up some of the cruft from the old DRI setup, and
it turns out that only the GLSL extensions are still off if we
let st_extensions.c handle the setup instead.
Brian Paul