diff options
Diffstat (limited to 'tests/manual/rhi/shared/imgui/imgui.frag')
-rw-r--r-- | tests/manual/rhi/shared/imgui/imgui.frag | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/manual/rhi/shared/imgui/imgui.frag b/tests/manual/rhi/shared/imgui/imgui.frag new file mode 100644 index 0000000000..6169dd639f --- /dev/null +++ b/tests/manual/rhi/shared/imgui/imgui.frag @@ -0,0 +1,37 @@ +#version 440 + +layout(location = 0) in vec2 v_texcoord; +layout(location = 1) in vec4 v_color; + +layout(location = 0) out vec4 fragColor; + +layout(std140, binding = 0) uniform buf { + mat4 mvp; + float opacity; + // Windows HDR: set to SDR_white_level_in_nits / 80 + // macOS/iOS EDR: set to 1.0 + // No HDR: set to 0.0, will do linear to sRGB at the end then. + float hdrWhiteLevelMult; +}; + +layout(binding = 1) uniform sampler2D tex; + +vec3 linearToSRGB(vec3 color) +{ + vec3 S1 = sqrt(color); + vec3 S2 = sqrt(S1); + vec3 S3 = sqrt(S2); + return 0.585122381 * S1 + 0.783140355 * S2 - 0.368262736 * S3; +} + +void main() +{ + vec4 c = v_color * texture(tex, v_texcoord); + c.a *= opacity; + if (hdrWhiteLevelMult > 0.0) + c.rgb *= hdrWhiteLevelMult; + else + c.rgb = linearToSRGB(c.rgb); + c.rgb *= c.a; // premultiplied alpha + fragColor = c; +} |