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.
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).
Add a module that will manage uploading and coalescing multiple
user-buffers, malloc-buffers and other random data that doesn't
happen to be in a GPU buffer already. The module stuffs multiple
little uploads into larger GPU buffers to reduce create/destroy
overheads, etc.
This requires upgrading the interface so that the argument to
glXBindTexImageEXT isn't just dropped on the floor. Note that this only
fixes the accelerated path on Intel, as Mesa's texture format support is
missing x8r8g8b8 support (right now, GL_RGB textures get uploaded as a8r8gb8,
but in this case we're not doing the upload so we can't really work around it
that way).
Fixes bugs with compositors trying to use shaders that use alpha channels, on
windows without a valid alpha channel. Bug #19910 and likely others as well.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Initialize the shader's pragma settings before calling the compiler.
Added pragma "Ignore" fields to allow overriding the #pragma directives found
in shader source code.
It turns out some tests are sensitive to rounding vs. truncating when
converting float color values to integers in glReadPixels(). In particular,
this matters when the destination format is 5/6/5 or 4/4/4/4, etc.
Jakob Bornecrantz
José Fonseca
Brian Paul
Michal Krol
Keith Whitwell
Corbin Simpson
Keith Whitwell
Eric Anholt
Alan Hourihane