mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2025-12-10 09:32:29 +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
45 lines
1.1 KiB
GLSL
45 lines
1.1 KiB
GLSL
#version 330 core
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// clang-format off
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uniform usampler2D uOpaqueTex;
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uniform sampler2D uOpaqueDepth;
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uniform usampler2D uTransparentTex;
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uniform sampler2D uTransparentDepth;
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uniform usampler2D uPaletteTex;
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uniform usampler2D uBlendPaletteTex;
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// clang-format on
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in vec2 fTextureCoordinate;
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out uint oColour;
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void main()
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{
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uint opaque = texture(uOpaqueTex, fTextureCoordinate).r;
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float opaqueDepth = texture(uOpaqueDepth, fTextureCoordinate).r;
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uint transparent = texture(uTransparentTex, fTextureCoordinate).r;
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float transparentDepth = texture(uTransparentDepth, fTextureCoordinate).r;
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if (opaqueDepth <= transparentDepth)
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{
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transparent = 0u;
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}
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uint blendColour = (transparent & 0xff00u) >> 8;
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if (blendColour > 0u)
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{
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if ((transparent & 0x00ffu) != 0u)
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{
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oColour = blendColour;
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}
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else
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{
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oColour = texture(uBlendPaletteTex, vec2(opaque, blendColour) / 256.f).r;
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}
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}
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else
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{
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oColour = texture(uPaletteTex, vec2(opaque, transparent) / 256.f).r;
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}
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}
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