OpenGL Test
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#version 130
in vec2 textCoord;
out vec4 fragColor;
uniform vec3 color;
uniform sampler2D texture1;
void main()
{
// Sample sets the alpha channel to either 0 / 1
vec4 sampled = vec4(1.0f, 1.0f, 1.0f, texture(texture1, textCoord).r);
fragColor = vec4(color, 1.0f) * sampled;
}