39 lines
1.4 KiB
GLSL
39 lines
1.4 KiB
GLSL
#version 450
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#extension GL_EXT_samplerless_texture_functions : require
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layout (binding = 1) uniform sampler samp;
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layout (binding = 2) uniform texture2D albedoTexture;
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layout (binding = 3) uniform texture2D normalTexture;
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layout (binding = 4) uniform texture2D positionTexture;
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struct Cursor {
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vec2 position;
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vec2 radius;
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vec4 color;
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};
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layout (location = 0) in vec2 inUv;
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layout (location = 1) in float inAlpha;
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layout (location = 2) in Cursor inCursor;
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layout (location = 0) out vec4 outAlbedoSpecular;
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layout (location = 1) out vec4 outNormal;
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layout (location = 2) out vec4 outPosition;
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void main() {
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if ( inCursor.radius.x <= 0 && inCursor.radius.y <= 0 ) {
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vec2 uv = gl_FragCoord.xy / textureSize(albedoTexture, 0);
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outAlbedoSpecular = texture(sampler2D(albedoTexture, samp), uv);
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outNormal = texture(sampler2D(normalTexture, samp), uv);
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outPosition = texture(sampler2D(positionTexture, samp), uv);
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return;
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}
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outAlbedoSpecular = texture(sampler2D(albedoTexture, samp), inUv);
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float dist = pow(inUv.x - inCursor.position.x, 2) / pow(inCursor.radius.x, 2) + pow(inUv.y - inCursor.position.y, 2) / pow(inCursor.radius.y, 2);
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if ( dist <= 1 ) {
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float attenuation = dist;
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outAlbedoSpecular.rgb = mix( inCursor.color.rgb * inCursor.color.a, outAlbedoSpecular.rgb, attenuation );
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}
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if ( inAlpha < 1.0 ) outAlbedoSpecular.a = inAlpha;
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} |