8548afa231
If you tried removing `culling: none` from any post-process materials, everything would be fine in GL but Vulkan would be black because our full-screen triangle was back-facing. Continue reading only if you thrive in absurd situations. - Metal and OpenGL define clip space as Y-up whereas Vulkan is Y-down. - Metal and Vulkan define tex coords as Y-down whereas OpenGL is Y-up.
12 lines
228 B
GLSL
12 lines
228 B
GLSL
/** @public-api */
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vec4 getPosition() {
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vec4 pos = position;
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// In Vulkan, clip space is Y-down. In OpenGL and Metal, clip space is Y-up.
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#if defined(TARGET_VULKAN_ENVIRONMENT)
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pos.y = -pos.y;
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#endif
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return pos;
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}
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