These are not looked up by name, so we don't need them in a specific scope.
Moreover, since we generate the temporaries using the same storage
modifiers as the uniforms, hlsl_emit_bytecode() will treat them as new
uniforms if run multiple times. That function is currently only run
once, but this will change when compiling shaders in effects.
Rather than in the HLSL writer. This way we output vsir consistent with the vsir
we read, and the vsir that the backends expect [bringing us one step closer to
being able to feed the HLSL frontend directly into the individual backends.]
point-sprite.shader_test is not technically well formed since, in SM4,
the vertex output signature should be:
// Output signature:
// Name Index Mask Register SysValue Format Used
// -------------------- ----- ------ -------- -------- ------- ------
// sv_position 0 xyzw 0 POS float xyzw
// texcoord 0 xy 1 NONE float xy
and the pixel input signature should be:
// Input signature:
// Name Index Mask Register SysValue Format Used
// -------------------- ----- ------ -------- -------- ------- ------
// texcoord 0 xy 0 NONE float xy
so we are not passing "texcoord" properly to the pixel shader, even on
Windows.
