mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-07-15 17:45:58 +00:00
a924ffe70c
In GLSL, gl_SampleID and gl_SampleMask[In] require the GL_OES_sample_variables extension, so output: "#extension GL_OES_sample_variables : require" in the header if those builtins is used. Note that extensions must be inserted before the default precision declaration, but helpers must be inserted after it, so we set a flag and emit extensions, then the precision declaration, then helpers. Further fixes: - use gl_SampleMaskIn for input builtins, gl_SampleMask for output, necessitating the addition of a storage class to GLSLBuiltinToString() - fix the handling of gl_SampleMaskIn: it's array<i32> in GLSL, not array<u32> as in SPIR-V - centralize conversions for GLSL builtins used as input variables in FromGLSLBuiltin() - implement bitcasts on assignment to GLSL builtin output variables, centralized in ToGLSLBuiltin() - update the extension handling in the GLSL writer to check for both sample_index and sample_mask. - call UnwrapRef() in GLSL's EmitBitcast(). In the test case, we were not recognizing the argument as a uint, yielding float() instead of uintBitsToFloat(). Bug: tint:1408, tint:1412, tint:1414 Change-Id: Ie01541eb6e7cdf4e21347341f988bff916346797 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78920 Reviewed-by: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Stephen White <senorblanco@chromium.org>
28 lines
638 B
GLSL
28 lines
638 B
GLSL
#version 310 es
|
|
#extension GL_OES_sample_variables : require
|
|
precision mediump float;
|
|
|
|
layout(location = 0) in float a_1;
|
|
layout(location = 1) in float b_1;
|
|
layout(location = 0) out float a_2;
|
|
struct FragIn {
|
|
float a;
|
|
uint mask;
|
|
};
|
|
|
|
FragIn tint_symbol(FragIn tint_symbol_1, float b) {
|
|
if ((tint_symbol_1.mask == 0u)) {
|
|
return tint_symbol_1;
|
|
}
|
|
FragIn tint_symbol_2 = FragIn(b, 1u);
|
|
return tint_symbol_2;
|
|
}
|
|
|
|
void main() {
|
|
FragIn tint_symbol_3 = FragIn(a_1, uint(gl_SampleMaskIn[0]));
|
|
FragIn inner_result = tint_symbol(tint_symbol_3, b_1);
|
|
a_2 = inner_result.a;
|
|
gl_SampleMask[0] = int(inner_result.mask);
|
|
return;
|
|
}
|