wehub-resource-sync
94 lines
3.4 KiB
GLSL
94 lines
3.4 KiB
GLSL
(
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name: "HdrDownscale",
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resources: [
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(
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name: "lumSampler",
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kind: Texture(kind: Sampler2D, fallback: White),
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binding: 0
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),
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(
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name: "properties",
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kind: PropertyGroup([
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(name: "worldViewProjection", kind: Matrix4()),
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(name: "invSize", kind: Vector2()),
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]),
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binding: 0
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),
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],
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passes: [
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(
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name: "Primary",
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draw_parameters: DrawParameters(
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cull_face: None,
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color_write: ColorMask(
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red: true,
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green: true,
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blue: true,
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alpha: true,
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),
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depth_write: false,
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stencil_test: None,
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depth_test: None,
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blend: None,
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stencil_op: StencilOp(
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fail: Keep,
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zfail: Keep,
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zpass: Keep,
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write_mask: 0xFFFF_FFFF,
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),
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scissor_box: None
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),
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vertex_shader:
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r#"
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layout (location = 0) in vec3 vertexPosition;
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layout (location = 1) in vec2 vertexTexCoord;
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out vec2 texCoord;
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void main()
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{
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texCoord = vertexTexCoord;
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gl_Position = properties.worldViewProjection * vec4(vertexPosition, 1.0);
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}
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"#,
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fragment_shader:
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r#"
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in vec2 texCoord;
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out float outLum;
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void main() {
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float x = properties.invSize.x;
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float y = properties.invSize.y;
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float twoX = 2.0 * x;
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float twoY = 2.0 * y;
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float a = texture(lumSampler, vec2(texCoord.x - twoX, texCoord.y + twoY)).r;
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float b = texture(lumSampler, vec2(texCoord.x, texCoord.y + twoY)).r;
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float c = texture(lumSampler, vec2(texCoord.x + twoX, texCoord.y + twoY)).r;
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float d = texture(lumSampler, vec2(texCoord.x - twoX, texCoord.y)).r;
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float e = texture(lumSampler, vec2(texCoord.x, texCoord.y)).r;
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float f = texture(lumSampler, vec2(texCoord.x + twoX, texCoord.y)).r;
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float g = texture(lumSampler, vec2(texCoord.x - twoX, texCoord.y - twoY)).r;
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float h = texture(lumSampler, vec2(texCoord.x, texCoord.y - twoY)).r;
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float i = texture(lumSampler, vec2(texCoord.x + twoX, texCoord.y - twoY)).r;
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float j = texture(lumSampler, vec2(texCoord.x - x, texCoord.y + y)).r;
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float k = texture(lumSampler, vec2(texCoord.x + x, texCoord.y + y)).r;
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float l = texture(lumSampler, vec2(texCoord.x - x, texCoord.y - y)).r;
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float m = texture(lumSampler, vec2(texCoord.x + x, texCoord.y - y)).r;
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outLum = e * 0.125;
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outLum += (a + c + g + i) * 0.03125;
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outLum += (b + d + f + h) * 0.0625;
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outLum += (j + k + l + m) * 0.125;
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}
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"#,
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)
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]
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) |