50 lines
1.4 KiB
GLSL
50 lines
1.4 KiB
GLSL
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#version 450
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#extension GL_ARB_separate_shader_objects : enable
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#extension GL_ARB_shading_language_420pack : enable
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layout (location = 0) in vec4 inPos;
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layout (location = 1) in vec4 inColor;
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layout (location = 2) in float inAlpha;
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layout (location = 3) in float inSize;
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layout (location = 4) in float inRotation;
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layout (location = 5) in int inType;
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layout (location = 0) out vec4 outColor;
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layout (location = 1) out float outPointSize;
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layout (location = 2) out float outAlpha;
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layout (location = 3) out flat int outType;
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layout (location = 4) out float outRotation;
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layout (binding = 0) uniform UBO
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{
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mat4 projection;
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mat4 modelview;
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vec2 viewportDim;
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float pointSize;
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} ubo;
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void main ()
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{
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gl_PointSize = ubo.pointSize;
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outColor = inColor;
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outAlpha = inAlpha;
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outType = inType;
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outRotation = inRotation;
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vec4 eyePos = ubo.modelview * vec4(inPos.xyz, 1.0);
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vec4 projVoxel = ubo.projection * vec4(ubo.pointSize, ubo.pointSize, eyePos.z, eyePos.w);
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vec2 projSize = ubo.viewportDim * projVoxel.xy / projVoxel.w;
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outPointSize = inSize * 0.25 * (projSize.x + projSize.y);
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gl_PointSize = outPointSize;
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gl_Position = ubo.projection * ubo.modelview * vec4(inPos.xyz, 1.0);
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float pointDist = (gl_Position.w == 0.0) ? 0.00001 : gl_Position.w;
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float viewportAR = ubo.viewportDim.x / ubo.viewportDim.y;
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gl_PointSize = (((inSize * 2048.0 * viewportAR) / pointDist) * viewportAR);
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}
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