If GL context had e.g. tex0, tex2 and fog the VAPOutputCntl1 returned 0x104 instead of 0x124 - that meaned we're sending only 8 texcoords (instead of 12) which ended up in GPU hang.
We shouldn't use i variable for SWTCL_OVM_TEX because textures doesn't have to be enabled in "packed" order.
We could have tex1,tex3 and fog which would receive 7,9,8 OVM locations instead of 6,7,8.
- when rewriting per component negate swizzle, first instruction should get not negated source
- KIL instruction ignores swizzles
TODO:
- tex instructions does not support saturation
- tex instructions cannot read from consant memory
If the vertex program didn't write position attribute, the position invariant function would add necessary instructions, but the vertex position would be overwritten by artificial outputs insts added to satisfy fragment program requirements.
Fixes "whole screen is gray" problem for HW TCL path in sauerbraten when shaders are enabled, and whole slew of wine d3d9 tests.
If the vertex program wrote secondary color without primary color, the secondary color output register index would be 0 which resulted in overwriting vertex position in some cases.
Actually, after spotting this problem, I realized this is unreachable
code. However don't bother to enable this fast path now, given the normal
path is working just fine.
Add _NEW_PROGRAM_CONSTANTS to _SWRAST_NEW_DERIVED.
This makes sure that we update the fragment shader's constants when state
vars (such as point size) changes.
Fixes the progs/glsl/points.c demo.
The existing implementation was already implemented on software, but relied
on the pipe driver to always support the R16G16B16A16_SNORM format. This
patch eliminates that, without prejudice against a future hardware-only
implementation.
It also avoids some of the short <-> float conversions, and only does a read
transfer of the color buffer on GL_RETURN if absolutely necessary.
When with memory manager we need to make sure the GPU won't try to access
beyond vertex buffer size, do so by enforcing that the maximun index is the
last vertex of the buffer.
