Mip-mapped 3D textures are not arrays of 2D layers
with a mip-map layout like 2D textures, therefore we
cannot use image_nr == depth for them.
Making use of "volume tiling" modes now, the allowed
modes are 0xZY where Z <= 5 and y <= 5.
intel: avoid unnecessary front buffer flushing/updating
Before, if we just called glXMakeCurrent() and didn't render anything we'd
still trigger a flushFrontBuffer() call.
Now only set the intel->front_buffer_dirty field at state validation time
just before we draw something.
NOTE: additional calls to intel_check_front_buffer_rendering() might be
needed if I missed some rendering paths.
st/mesa: don't use util_blit_pixels_writemask() for depth or depth/stencil
util_blit_pixels_writemask() only works for color formats at this time.
Also, it might never work for depth/stencil surfaces since we can't get
handle stencil values in a fragment shader.
Fixes glCopyTexSubImage(GL_DEPTH_COMPONENT).
ARB prog parser: Fix a couple issues with previous merge from mesa_7_6_branch
Since the addition of support for Nvidia condition codes, the lexer internally
uses handle_ident to select between returning IDENTIFIER and USED_IDENTIFIER.
Also, use return_string instead of strdup.
Fixes bug #24809.
gallium: Cleanup predicate and condition code TGSI tokens.
There is little point in having a special TGSI token just to handle
predicate register updates. Remove tgsi_dst_register_ext_predicate token
and instead use a new PREDICATE register file to update predicates.
Actually, the contents of the obsolete token are being moved
to tgsi_instruction_ext_predicate, where they should be
from the very beginning.
Remove the NVIDIA-specific condition code tokens -- nobody uses them
and they can be emulated with predicates if needed.
Introduce PIPE_CAP_SM3 that indicates whether a driver supports
SM3-level instructions, and in particular predicates.
Add PIPE_CAP_MAX_PREDICATE_REGISTERS that can be used to query the driver
how many predicate registers it supports (currently it would be 1).
First, using width * block size as pitch is evidently
wrong if a block contains more than 1 texel.
For tiled textures, since a block occupies a contiguous
area of memory, y addressing in m2mf has to be done by
block index, not the y coordinate itself.
This should fix compressed textures.