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If the VS has outputs that aren't consumed by the FS we were mapping
them all to one unused VS output index, but that's illegal. Instead,
map unused VS outputs to unique indexes.
Reviewed-by: José Fonseca <[email protected]>
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The state tracker may generate shaders that use generic vs outputs /
fs inputs like:
DCL IN[0], GENERIC[0]
DCL IN[1], GENERIC[10]
DCL IN[2], GENERIC[11]
This patch remaps 0, 10, 11 to small integers like 1, 2, 3 so that we
stay inside the SVGA3D limit (8).
The remapping is done to both the vertex shader outputs and the
fragment shader inputs. The same mapping must be used for a vs/fs
pair.
Note that 'union svga_compile_key' is now 'struct svga_compile_key'
because we needed to add the register remapping table. The change in
size isn't really significant though (it's not a search key).
Also, add assertions when building up SVGA3D src/dst registers to we
don't try to store too large of value for the bitfield size.
Reviewed-by: José Fonseca <[email protected]>
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This exposes the GL_EXT_texture_swizzle extension and allows the various
depth texture modes to be implemented properly. This, plus a follow-on
texture/shadow change fixes quite a few piglit GLSL shadow sampler test
failures.
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Emit the SVGA3D_RS_POINTSPRITEENABLE render state.
When sprite_coord_mode=PIPE_SPRITE_COORD_LOWER_LEFT emit extra frag
shader code to invert the Y coordinate of the incoming texcoord.
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Use front/back instead of cw/ccw throughout.
Also, use offset_point/line/fill instead of offset_cw/ccw.
Brings gallium representation of this state into line with its main
user, and also what turns out to be the most common hardware
representation.
This fixes a long-standing bias in the interface towards the
architecture of the software rasterizer.
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This also allows us to have texture_target
back as a bitfield and save us a few bytes.
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gcc won't let us take the address of a bitfield in the svga_fs_key_size()
function.
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Seems to be the only way to stay fully portable.
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