glsl: fix a swizzle-related regression
This new issue was exposed by commit 6eabfc27f1
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@ -164,7 +164,7 @@ _slang_var_swizzle(GLint size, GLint comp)
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{
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{
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switch (size) {
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switch (size) {
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case 1:
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case 1:
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return MAKE_SWIZZLE4(comp, comp, comp, comp);
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return MAKE_SWIZZLE4(comp, SWIZZLE_NIL, SWIZZLE_NIL, SWIZZLE_NIL);
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case 2:
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case 2:
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return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_NIL, SWIZZLE_NIL);
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return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_NIL, SWIZZLE_NIL);
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case 3:
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case 3:
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