llvmpipe: Stop relying on PIPE_FLUSH_TEXTURE_CACHE/PIPE_FLUSH_RENDER_CACHE magic.
Flush means flush, i.e., all previous operations should be visible from
other contexts.
This does not imply unswizzling tiles, since unswizzling should be done on
a needed basis for any context.
sw/xlib: NULL-out pointers after freeing image data
This fixes a double-free() error when not using a shared memory XImage.
The XDestroyImage() function frees the ximage->data buffer if non-NULL.
If we free it ourselves, we also need to NULL-out the pointer.
meta: Convert Z value from normalized to object-space in meta code
Convert Z from a normalized value in the range [0, 1] to an
object-space Z coordinate in [-1, +1] so that drawing at the new Z
position with the default/identity ortho projection results in the
original Z value. Used by the meta-Clear, Draw/CopyPixels and Bitmap
functions where the Z value comes from the clear value or raster
position.
Fixes piglit tests fdo23670-depth_test, quad-invariance and
glsl-orangebook-ch06-bump as well as oglc zbfunc.c.
https://bugs.freedesktop.org/show_bug.cgi?id=23670
mesa: Reenable check for GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
The check was disabled when FEATURE_OES_framebuffer_object was enabled,
since that used to mean we weren't implementing regular OpenGL semantics.
Now that we can compile in support for multiple APIs, change the #ifdef to
compile the check in when FEATURE_GL is enabled and enable the check for
contexts that implement OpenGL at runtime.
i965: Fix bit allocation for number of color regions for ARB_draw_buffers.
If you used all 4 color targets we currently support, we would see 0
and end up just writing the first output. Give enough bits that we
can do the maximum of 16.
Fixes piglit fbo-drawbuffers-maxtargets.