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https://github.com/MaSzyna-EU07/maszyna.git
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5f34d68e6f
Replaces heightfield with Cesium Quantized Mesh format (TIN).
Full replacement, not hybrid - TIN is the only terrain format.
Implemented:
- Format: quantizedmeshformat.h, quantizedmeshreader.h
- Triangulator: terraincooker_tin.{h,cpp} using CDT
- Cooker: terraincook now generates TIN by default
- Loader: terraintileloader fully rewritten for TIN
- GPU pool: terraintilepool_tin (VBO/IBO per tile)
- Renderer interface: terrainclipmap.cppm updated
- Shaders: terrainclipmap_tin.{vert,frag}
- Documentation: 5 comprehensive markdown files
Remaining:
- terrainclipmap.cpp render() method (partial, needs completion)
- Build testing and integration
- See TIN_INTEGRATION_GUIDE.md for next steps
Stats: 2700+ lines new code, ~50% vertex reduction expected
31 lines
819 B
GLSL
31 lines
819 B
GLSL
// TIN Terrain Vertex Shader
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// Replaces texture-based heightfield with vertex attributes
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#version 330 core
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// Vertex attributes from VBO
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layout(location = 0) in vec3 aPosition; // Relative to tile origin
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layout(location = 1) in vec2 aUV;
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layout(location = 2) in uint aMaterial;
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// Uniforms
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uniform vec3 tile_offset; // Tile origin relative to camera
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uniform mat4 projectionMatrix;
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uniform mat4 modelViewMatrix;
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// Output to fragment shader
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out vec2 vUV;
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flat out uint vMaterial;
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void main() {
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// Position is tile-relative, add offset to get camera-relative
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vec3 worldPos = aPosition + tile_offset;
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// Transform to clip space
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gl_Position = projectionMatrix * modelViewMatrix * vec4(worldPos, 1.0);
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// Pass through to fragment shader
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vUV = aUV;
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vMaterial = aMaterial;
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}
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