SPIRV-Cross/shaders-msl/vert/unused-position.vert

#version 450

out gl_PerVertex
{
    vec4 gl_Position;
    float gl_PointSize;
    float gl_ClipDistance[1];
};

void main()
{
    gl_PointSize = 1.0;
}
MSL: Fix duplicate gl_Position outputs when gl_Position defined but unused. When gl_Position is defined by SPIR-V, but neither used nor initialized, it appeared twice in the MSL output, as gl_Position and glPosition_1. The existing tests for whether an output is active check only that it is used by an op, or initialized. Adding the implicit gl_Position also marked the existing gl_Position as active, duplicating the output variable. Fix is that when checking for the need to add an implicit gl_Position output, also check if the var is already defined in the shader, and just needs to be marked as active. Add test shader. 2021-08-16 15:23:15 +00:00			`#version 450`

			`out gl_PerVertex`
			`{`
			`vec4 gl_Position;`
			`float gl_PointSize;`
			`float gl_ClipDistance[1];`
			`};`

			`void main()`
			`{`
			`gl_PointSize = 1.0;`
			`}`