4f47efdb02
Vulkan is the only backend with the Y axis pointing down in normalized device coordinates, while all the geometry here is built in the bottom-left based system of OpenGL. The vertex shaders computing clip space from pixel coordinates now negate Y by a flipY uniform, kept at offset 12 in every block they share, and the clip space quads computed on our side, in PiP and in the offscreen passes of the group call viewport, are negated directly. The 3D renderers already handle this with clipSpaceCorrMatrix(). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
31 lines
747 B
GLSL
31 lines
747 B
GLSL
#version 450
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layout(location = 0) in vec2 position;
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layout(location = 1) in vec2 v_texcoordIn;
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layout(location = 2) in vec2 b_texcoordIn;
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layout(location = 0) out vec2 v_texcoord;
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layout(location = 1) out vec2 b_texcoord;
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layout(location = 2) out vec2 v_position;
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layout(std140, binding = 0) uniform Params {
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vec2 viewport;
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float _pad0;
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// -1.0 when the NDC Y axis points down (Vulkan), 1.0 otherwise.
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float flipY;
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vec4 frameBg;
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vec4 shadow;
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float paused;
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vec4 roundRect;
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vec2 radiusOutline;
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vec4 roundBg;
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vec4 outlineFg;
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};
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void main() {
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v_texcoord = v_texcoordIn;
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b_texcoord = b_texcoordIn;
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v_position = position;
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vec2 ndc = vec2(-1.0, -1.0) + 2.0 * position / viewport;
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gl_Position = vec4(ndc.x, ndc.y * flipY, 0.0, 1.0);
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}
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