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https://github.com/RPCSX/rpcsx.git
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61 lines
1.2 KiB
GLSL
61 lines
1.2 KiB
GLSL
R"(
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#version 450
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#extension GL_ARB_separate_shader_objects : enable
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%preprocessor
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#ifdef VULKAN
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#define USE_UBO 1
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#endif
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layout(location=0) in vec4 in_pos;
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layout(location=0) out vec2 tc0;
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layout(location=1) out vec4 color;
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layout(location=2) out vec4 clip_rect;
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#if USE_UBO
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layout(%push_block) uniform Configuration
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{
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vec4 ui_scale;
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vec4 albedo;
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vec4 viewport;
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vec4 clip_bounds;
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};
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#else
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uniform vec4 ui_scale;
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uniform vec4 albedo;
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uniform vec4 viewport;
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uniform vec4 clip_bounds;
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#endif
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vec2 snap_to_grid(const in vec2 normalized)
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{
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return floor(fma(normalized, viewport.xy, vec2(0.5))) / viewport.xy;
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}
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vec4 clip_to_ndc(const in vec4 coord)
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{
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vec4 ret = (coord * ui_scale.zwzw) / ui_scale.xyxy;
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#ifndef VULKAN
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// Flip Y for OpenGL
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ret.yw = 1. - ret.yw;
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#endif
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return ret;
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}
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vec4 ndc_to_window(const in vec4 coord)
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{
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return fma(coord, viewport.xyxy, viewport.zwzw);
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}
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void main()
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{
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tc0.xy = in_pos.zw;
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color = albedo;
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clip_rect = ndc_to_window(clip_to_ndc(clip_bounds));
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vec4 pos = vec4(clip_to_ndc(in_pos).xy, 0.5, 1.);
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pos.xy = snap_to_grid(pos.xy);
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gl_Position = (pos + pos) - 1.;
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}
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)"
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