diff options
Diffstat (limited to 'source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_color_balance.glsl')
-rw-r--r-- | source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_color_balance.glsl | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_color_balance.glsl b/source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_color_balance.glsl new file mode 100644 index 00000000000..bffb94cdedb --- /dev/null +++ b/source/blender/gpu/shaders/compositor/library/gpu_shader_compositor_color_balance.glsl @@ -0,0 +1,34 @@ +#pragma BLENDER_REQUIRE(gpu_shader_common_color_utils.glsl) + +void node_composite_color_balance_lgg( + float factor, vec4 color, vec3 lift, vec3 gamma, vec3 gain, out vec4 result) +{ + lift = 2.0 - lift; + vec3 srgb_color = linear_rgb_to_srgb(color.rgb); + vec3 lift_balanced = ((srgb_color - 1.0) * lift) + 1.0; + + vec3 gain_balanced = lift_balanced * gain; + gain_balanced = max(gain_balanced, vec3(0.0)); + + vec3 linear_color = srgb_to_linear_rgb(gain_balanced); + gamma = mix(gamma, vec3(1e-6), equal(gamma, vec3(0.0))); + vec3 gamma_balanced = pow(linear_color, 1.0 / gamma); + + result.rgb = mix(color.rgb, gamma_balanced, min(factor, 1.0)); + result.a = color.a; +} + +void node_composite_color_balance_asc_cdl(float factor, + vec4 color, + vec3 offset, + vec3 power, + vec3 slope, + float offset_basis, + out vec4 result) +{ + offset += offset_basis; + vec3 balanced = color.rgb * slope + offset; + balanced = pow(max(balanced, vec3(0.0)), power); + result.rgb = mix(color.rgb, balanced, min(factor, 1.0)); + result.a = color.a; +} |