7e15234145
really dug into example to learn and just _leaving the example better then I found it_ but cleaning up some unused values and swizzle redudency in shaders. Tested on desktop and android
48 lines
No EOL
1.2 KiB
GLSL
48 lines
No EOL
1.2 KiB
GLSL
#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 outAlpha;
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layout (location = 2) out flat int outType;
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layout (location = 3) 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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out gl_PerVertex
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{
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vec4 gl_Position;
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float gl_PointSize;
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};
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void main ()
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{
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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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gl_Position = ubo.projection * ubo.modelview * vec4(inPos.xyz, 1.0);
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// Base size of the point sprites
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float spriteSize = 8.0 * inSize;
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// Scale particle size depending on camera projection
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vec4 eyePos = ubo.modelview * vec4(inPos.xyz, 1.0);
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vec4 projectedCorner = ubo.projection * vec4(0.5 * spriteSize, 0.5 * spriteSize, eyePos.z, eyePos.w);
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gl_PointSize = ubo.viewportDim.x * projectedCorner.x / projectedCorner.w;
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} |