47 lines
1.2 KiB
GLSL
47 lines
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 (binding = 1) uniform sampler2D samplerSmoke;
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layout (binding = 2) uniform sampler2D samplerFire;
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layout (location = 0) in vec4 inColor;
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layout (location = 1) in float inPointSize;
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layout (location = 2) in float inAlpha;
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layout (location = 3) in flat int inType;
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layout (location = 4) in float inRotation;
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layout (location = 0) out vec4 outFragColor;
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void main ()
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{
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vec4 color;
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float alpha = (inAlpha <= 1.0) ? inAlpha : 2.0 - inAlpha;
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// Rotate texture coordinates
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// Rotate UV
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float rotCenter = 0.5;
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float rotCos = cos(inRotation);
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float rotSin = sin(inRotation);
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vec2 rotUV = vec2(
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rotCos * (gl_PointCoord.x - rotCenter) + rotSin * (gl_PointCoord.y - rotCenter) + rotCenter,
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rotCos * (gl_PointCoord.y - rotCenter) - rotSin * (gl_PointCoord.x - rotCenter) + rotCenter);
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if (inType == 0)
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{
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// Flame
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color = texture(samplerFire, rotUV);
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outFragColor.a = 0.0;
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}
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else
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{
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// Smoke
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color = texture(samplerSmoke, rotUV);
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outFragColor.a = color.a * alpha;
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}
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outFragColor.rgb = color.rgb * inColor.rgb * alpha;
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}
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