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
45 lines
No EOL
1.1 KiB
GLSL
45 lines
No EOL
1.1 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 inAlpha;
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layout (location = 2) in flat int inType;
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layout (location = 3) 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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} |