41 lines
970 B
GLSL
41 lines
970 B
GLSL
#version 150
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layout (points) in;
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layout (triangle_strip) out;
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layout (max_vertices = 4) out;
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// OF handled uniforms and attributes.
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uniform mat4 projectionMatrix;
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// App specific uniforms and attributes.
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uniform float uSpriteSize;
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in vec4 vPosition[];
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in vec2 vTexCoord[];
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flat in int vValid[];
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out vec2 gTexCoord;
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void main()
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{
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if (vValid[0] == 0) return;
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gTexCoord = vTexCoord[0];
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for (int i = 0; i < gl_in.length(); ++i)
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{
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gl_Position = projectionMatrix * (vPosition[i] + vec4(1.0, -1.0, 0.0, 0.0) * uSpriteSize);
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EmitVertex();
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gl_Position = projectionMatrix * (vPosition[i] + vec4(1.0, 1.0, 0.0, 0.0) * uSpriteSize);
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EmitVertex();
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gl_Position = projectionMatrix * (vPosition[i] + vec4(-1.0, -1.0, 0.0, 0.0) * uSpriteSize);
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EmitVertex();
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gl_Position = projectionMatrix * (vPosition[i] + vec4(-1.0, 1.0, 0.0, 0.0) * uSpriteSize);
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EmitVertex();
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EndPrimitive();
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}
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}
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