103 lines
2.2 KiB
GLSL
103 lines
2.2 KiB
GLSL
#extension GL_EXT_scalar_block_layout : require
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#extension GL_EXT_nonuniform_qualifier : require
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#include "global.glsl"
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#if VERTEX_SHADER
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// Input, output blocks
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layout(location = 0) out VertexData {
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vec2 uv;
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} VertexOut;
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// QUAD
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vec2 positions[6] = vec2[](
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vec2(-1, -1),
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vec2(-1, 1),
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vec2(1, 1),
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vec2(1, 1),
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vec2(1, -1),
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vec2(-1, -1)
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);
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void main() {
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gl_Position = vec4(positions[gl_VertexIndex], 0, 1);
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VertexOut.uv = positions[gl_VertexIndex].xy * 0.5 + 0.5;
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}
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#endif // VERTEX_SHADER
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#if FRAGMENT_SHADER
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// Input, output blocks
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layout(location = 0) in VertexData {
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vec2 uv;
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} VertexOut;
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// Translated from https://github.com/TheRealMJP/BakingLab/blob/master/BakingLab/ACES.hlsl
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// sRGB => XYZ => D65_2_D60 => AP1 => RRT_SAT
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const mat3 ACESInputMat = mat3(
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vec3(0.59719, 0.07600, 0.02840),
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vec3(0.35458, 0.90834, 0.01566),
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vec3(0.04823, 0.13383, 0.83777)
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);
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// ODT_SAT => XYZ => D60_2_D65 => sRGB
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const mat3 ACESOutputMat = mat3(
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vec3( 1.60475, -0.10208, -0.00327),
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vec3(-0.53108, 1.10813, -0.00605),
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vec3(-0.07367, -0.07276, 1.07602)
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);
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vec3 RRTAndODTFit(vec3 v) {
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vec3 a = v * (v + 0.0245786f) - 0.000090537f;
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vec3 b = v * (0.983729f * v + 0.4329510f) + 0.238081f;
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return a / b;
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}
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vec3 ACESFitted(vec3 color)
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{
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color = ACESInputMat * color;
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// Apply RRT and ODT
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color = RRTAndODTFit(color);
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color = ACESOutputMat * color;
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// Clamp to [0, 1]
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color = clamp(color, 0, 1);
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return color;
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}
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layout(push_constant, std430) uniform constants {
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uint scene_color_texture;
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uint scene_color_sampler;
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} PushConstants;
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vec3 linearToSRGB(vec3 color) {
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vec3 x = color * 12.92f;
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vec3 y = 1.055f * pow(clamp(color, 0, 1), vec3(1.0f / 2.4f)) - 0.055f;
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vec3 clr = color;
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clr.r = color.r < 0.0031308f ? x.r : y.r;
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clr.g = color.g < 0.0031308f ? x.g : y.g;
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clr.b = color.b < 0.0031308f ? x.b : y.b;
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return clr;
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}
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layout(location = 0) out vec4 FragColor;
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void main() {
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vec3 hdr_color = texture(sampler2D(global_textures2d[PushConstants.scene_color_texture], global_samplers[PushConstants.scene_color_sampler]), VertexOut.uv).rgb;
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hdr_color = pow(hdr_color, vec3(1.0f/2.2f)); // ACESFitted(hdr_color);
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FragColor.rgb = hdr_color;
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FragColor.a = 1;
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}
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#endif // FRAGMNET_SHADER
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