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host_shaders: Add shader to render a full screen triangle
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set(SHADER_FILES
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set(SHADER_FILES
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block_linear_unswizzle_2d.comp
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block_linear_unswizzle_2d.comp
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block_linear_unswizzle_3d.comp
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block_linear_unswizzle_3d.comp
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full_screen_triangle.vert
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opengl_present.frag
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opengl_present.frag
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opengl_present.vert
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opengl_present.vert
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pitch_unswizzle.comp
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pitch_unswizzle.comp
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src/video_core/host_shaders/full_screen_triangle.vert
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src/video_core/host_shaders/full_screen_triangle.vert
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// Copyright 2020 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#version 450
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#ifdef VULKAN
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#define BEGIN_PUSH_CONSTANTS layout(push_constant) uniform PushConstants {
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#define END_PUSH_CONSTANTS };
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#define UNIFORM(n)
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#else // ^^^ Vulkan ^^^ // vvv OpenGL vvv
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#define BEGIN_PUSH_CONSTANTS
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#define END_PUSH_CONSTANTS
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#define UNIFORM(n) layout (location = n) uniform
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#endif
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BEGIN_PUSH_CONSTANTS
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UNIFORM(0) vec2 tex_scale;
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UNIFORM(1) vec2 tex_offset;
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END_PUSH_CONSTANTS
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layout(location = 0) out vec2 texcoord;
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void main() {
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float x = float((gl_VertexIndex & 1) << 2);
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float y = float((gl_VertexIndex & 2) << 1);
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gl_Position = vec4(x - 1.0, y - 1.0, 0.0, 1.0);
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texcoord = fma(vec2(x, y) / 2.0, tex_scale, tex_offset);
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}
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