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gbc-color: Apply gamma correction

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This commit is contained in:
Monroe88 2018-02-10 14:41:17 -06:00
parent d4cab25431
commit 63c49b0c34
1 changed files with 11 additions and 8 deletions
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17
handheld/shaders/color/gbc-color.slang
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@ -18,6 +18,8 @@ layout(std140, set = 0, binding = 0) uniform UBO
vec4 SourceSize; vec4 SourceSize;
} global; } global;
#define target_gamma 2.2
#define display_gamma 2.2
#define blr 0.0 #define blr 0.0
#define blg 0.0 #define blg 0.0
#define blb 0.0 #define blb 0.0
@ -31,6 +33,7 @@ layout(std140, set = 0, binding = 0) uniform UBO
#define br 0.05882 #define br 0.05882
#define bg 0.24314 #define bg 0.24314
#pragma stage vertex #pragma stage vertex
layout(location = 0) in vec4 Position; layout(location = 0) in vec4 Position;
layout(location = 1) in vec2 TexCoord; layout(location = 1) in vec2 TexCoord;
@ -49,14 +52,14 @@ layout(set = 0, binding = 2) uniform sampler2D Source;
void main() void main()
{ {
vec4 screen = texture(Source, vTexCoord); vec4 screen = pow(texture(Source, vTexCoord), vec4(target_gamma)).rgba;
// r g b black // red green blue alpha ; alpha does nothing for our purposes
mat4 color = mat4(r, rg, rb, 0.0, //red channel mat4 color = mat4(r, rg, rb, 0.0, //red
gr, g, gb, 0.0, //green channel gr, g, gb, 0.0, //green
br, bg, b, 0.0, //blue channel br, bg, b, 0.0, //blue
blr, blg, blb, 0.0); //alpha channel; these numbers do nothing for our purposes. blr, blg, blb, 0.0); //black
screen = color * screen; screen = color * screen;
FragColor = screen; FragColor = pow(screen, vec4(1.0 / display_gamma));
} }