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vulkan: apply color space transforms to textures

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This commit is contained in:
Julian Orth 2025-03-01 19:19:27 +01:00
parent c4d0fdd4bb
commit 8e65de91f9
12 changed files with 233 additions and 66 deletions
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1
src/gfx_apis/vulkan/shaders/frag_spec_const.glsl
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@ -5,5 +5,6 @@ layout(constant_id = 0) const bool src_has_alpha = false;
layout(constant_id = 1) const bool has_alpha_multiplier = false;
layout(constant_id = 2) const uint eotf = 0;
layout(constant_id = 3) const uint oetf = 0;
layout(constant_id = 4) const bool has_matrix = false;
#endif

20
src/gfx_apis/vulkan/shaders/tex.frag
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@ -1,25 +1,35 @@
#version 450
#extension GL_EXT_scalar_block_layout : require
#include "frag_spec_const.glsl"
#include "transfer_functions.glsl"
#include "tex.common.glsl"
layout(set = 0, binding = 0) uniform sampler sam;
layout(set = 1, binding = 0) uniform texture2D tex;
layout(set = 1, binding = 1, row_major, std430) uniform ColorManagementData {
mat4x4 matrix;
} cm_data;
layout(location = 0) in vec2 tex_pos;
layout(location = 0) out vec4 out_color;
void main() {
vec4 c = textureLod(sampler2D(tex, sam), tex_pos, 0);
if (eotf != oetf) {
if (eotf != oetf || has_matrix) {
vec3 rgb = c.rgb;
if (src_has_alpha) {
c.rgb /= mix(c.a, 1.0, c.a == 0.0);
rgb /= mix(c.a, 1.0, c.a == 0.0);
}
c.rgb = apply_eotf(c.rgb);
c.rgb = apply_oetf(c.rgb);
rgb = apply_eotf(rgb);
if (has_matrix) {
rgb = (cm_data.matrix * vec4(rgb, 1.0)).rgb;
}
rgb = apply_oetf(rgb);
if (src_has_alpha) {
c.rgb *= c.a;
rgb *= c.a;
}
c.rgb = rgb;
}
if (has_alpha_multiplier) {
if (src_has_alpha) {