wehub-resource-sync
100 lines
3.5 KiB
GLSL
100 lines
3.5 KiB
GLSL
(
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name: "Highlight",
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resources: [
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(
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name: "frameTexture",
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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: "color", kind: Vector4()),
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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: Some(BlendParameters(
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func: BlendFunc(
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sfactor: SrcAlpha,
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dfactor: OneMinusSrcAlpha,
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alpha_sfactor: SrcAlpha,
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alpha_dfactor: OneMinusSrcAlpha,
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),
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equation: BlendEquation(
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rgb: Add,
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alpha: Add
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)
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)),
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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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layout (location = 0) out vec4 outColor;
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in vec2 texCoord;
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void main() {
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ivec2 size = textureSize(frameTexture, 0);
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float w = 1.0 / float(size.x);
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float h = 1.0 / float(size.y);
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float n[9];
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n[0] = texture(frameTexture, texCoord + vec2(-w, -h)).a;
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n[1] = texture(frameTexture, texCoord + vec2(0.0, -h)).a;
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n[2] = texture(frameTexture, texCoord + vec2(w, -h)).a;
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n[3] = texture(frameTexture, texCoord + vec2( -w, 0.0)).a;
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n[4] = texture(frameTexture, texCoord).a;
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n[5] = texture(frameTexture, texCoord + vec2(w, 0.0)).a;
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n[6] = texture(frameTexture, texCoord + vec2(-w, h)).a;
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n[7] = texture(frameTexture, texCoord + vec2(0.0, h)).a;
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n[8] = texture(frameTexture, texCoord + vec2(w, h)).a;
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float sobel_edge_h = n[2] + (2.0 * n[5]) + n[8] - (n[0] + (2.0 * n[3]) + n[6]);
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float sobel_edge_v = n[0] + (2.0 * n[1]) + n[2] - (n[6] + (2.0 * n[7]) + n[8]);
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float sobel = sqrt((sobel_edge_h * sobel_edge_h) + (sobel_edge_v * sobel_edge_v));
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outColor = vec4(properties.color.rgb, properties.color.a * sobel);
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}
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"#,
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)
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]
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) |