Martin Slachta
58 lines
1.8 KiB
GLSL
58 lines
1.8 KiB
GLSL
#version 450
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layout(location = 0) out vec4 fragColor;
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layout(location = 0) in vec2 inUV;
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layout(set = 1, binding = 0) uniform sampler2D source;
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layout(set = 1, binding = 1) uniform sampler2D upscaled;
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layout( push_constant ) uniform constants
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{
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ivec2 resolution;
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} PushConstants;
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/* ? - e - ?
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* | a | b |
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* f - ? - g
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* | c | d |
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* ? - h - ?
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*/
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vec4 upscale() {
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vec2 srcTexelSize = 1.0f / PushConstants.resolution * 2.0f;
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float x = srcTexelSize.x;
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float y = srcTexelSize.y;
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vec3 color = vec3(0.0f);
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vec3 a = texture(upscaled, vec2(inUV.x - x, inUV.y + y)).rgb;
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vec3 b = texture(upscaled, vec2(inUV.x + x, inUV.y + y)).rgb;
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vec3 c = texture(upscaled, vec2(inUV.x - x, inUV.y - y)).rgb;
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vec3 d = texture(upscaled, vec2(inUV.x + x, inUV.y - y)).rgb;
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vec3 e = texture(upscaled, vec2(inUV.x, inUV.y + 2.0*y)).rgb;
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vec3 h = texture(upscaled, vec2(inUV.x, inUV.y - 2.0*y)).rgb;
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vec3 f = texture(upscaled, vec2(inUV.x - 2.0*x, inUV.y)).rgb;
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vec3 g = texture(upscaled, vec2(inUV.x + 2.0*x, inUV.y)).rgb;
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return vec4((a + b + c + d) * (1.0f/6.0f) + (e + f + g + h) * (1.0f/12.0f), 1.0);
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/* vec3
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color = texture(upscaled, vec2(inUV.x + x, inUV.y + y)).rgb;
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color += texture(upscaled, vec2(inUV.x + x, inUV.y - y)).rgb;
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color += texture(upscaled, vec2(inUV.x - x, inUV.y + y)).rgb;
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color += texture(upscaled, vec2(inUV.x - x, inUV.y - y)).rgb;
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color += 2.0f * texture(upscaled, vec2(inUV.x + x, inUV.y)).rgb;
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color += 2.0f * texture(upscaled, vec2(inUV.x - x, inUV.y)).rgb;
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color += 2.0f * texture(upscaled, vec2(inUV.x, inUV.y + y)).rgb;
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color += 2.0f * texture(upscaled, vec2(inUV.x, inUV.y - y)).rgb;
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color += 4.0f * texture(upscaled, inUV).rgb;
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return vec4(color * (1.0f / 16.0f), 1.0f); */
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}
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void main() {
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fragColor = texture(source, inUV) + upscale();
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} |