mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2025-12-24 08:12:53 +01:00
01b577fa58
* Improve performance of panning the viewport with OpenGL renderer * Use a shader to perform the copy rect operation * Clear the frame buffer after its initialized * Handle Y flip in shader, be explicit about FBO draw state * Target 330 core, remove the y flip handling * Explicitly use GL_RGB8 and not GL_RGB * Add more error handling, clear depth when depth is created * Lets try this * Make sure blend and depth are disabled * Bind the source fbo for reading * Try this alternative approach * Set read and draw buffer before glBlitFramebuffer * Apple is forcing my hand * Update changelog.txt
31 lines
605 B
GLSL
31 lines
605 B
GLSL
#version 330 core
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// Allows for about 8 million draws per frame
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const float DEPTH_INCREMENT = 1.0 / float(1u << 22u);
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uniform ivec2 uScreenSize;
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// clang-format off
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in ivec4 vBounds;
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in uint vColour;
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in int vDepth;
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// clang-format on
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in mat4x2 vVertMat;
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flat out uint fColour;
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void main()
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{
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vec2 pos = vVertMat * vec4(vBounds);
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// Transform screen coordinates to viewport coordinates
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pos = (pos * (2.0 / vec2(uScreenSize))) - 1.0;
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pos.y *= -1.0;
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float depth = 1.0 - (float(vDepth) + 1.0) * DEPTH_INCREMENT;
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fColour = vColour;
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gl_Position = vec4(pos, depth, 1.0);
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}
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