Assests and shader for fireplace particle example

data/shaders/particlefire/particle.frag

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (binding = 1) uniform sampler2D samplerSmoke;
+layout (binding = 2) uniform sampler2D samplerFire;
+
+layout (location = 0) in vec4 inColor;
+layout (location = 1) in float inPointSize;
+layout (location = 2) in float inAlpha;
+layout (location = 3) in flat int inType;
+layout (location = 4) in float inRotation;
+
+
+layout (location = 0) out vec4 outFragColor;
+
+void main () 
+{
+	vec4 color;
+	float alpha = (inAlpha <= 1.0) ? inAlpha : 2.0 - inAlpha;
+	
+	// Rotate texture coordinates
+	// Rotate UV	
+	float rotCenter = 0.5;
+	float rotCos = cos(inRotation);
+	float rotSin = sin(inRotation);
+    vec2 rotUV = vec2(
+		rotCos * (gl_PointCoord.x - rotCenter) + rotSin * (gl_PointCoord.y - rotCenter) + rotCenter,
+		rotCos * (gl_PointCoord.y - rotCenter) - rotSin * (gl_PointCoord.x - rotCenter) + rotCenter);
+
+	
+	if (inType == 0) 
+	{
+		// Flame
+		color = texture(samplerFire, rotUV);
+		outFragColor.a = 0.0;
+	}
+	else
+	{
+		// Smoke
+		color = texture(samplerSmoke, rotUV);
+		outFragColor.a = color.a * alpha;
+	}
+	
+	outFragColor.rgb = color.rgb * inColor.rgb * alpha;	
+}