summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/bgfx/examples/common/shaderlib.sh
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/bgfx/examples/common/shaderlib.sh')
-rw-r--r--3rdparty/bgfx/examples/common/shaderlib.sh26
1 files changed, 26 insertions, 0 deletions
diff --git a/3rdparty/bgfx/examples/common/shaderlib.sh b/3rdparty/bgfx/examples/common/shaderlib.sh
index 8f1d30eb3eb..b8915d16c5a 100644
--- a/3rdparty/bgfx/examples/common/shaderlib.sh
+++ b/3rdparty/bgfx/examples/common/shaderlib.sh
@@ -183,6 +183,19 @@ vec4 toLinear(vec4 _rgba)
return vec4(toLinear(_rgba.xyz), _rgba.w);
}
+vec3 toLinearAccurate(vec3 _rgb)
+{
+ vec3 lo = _rgb / 12.92;
+ vec3 hi = pow( (_rgb + 0.055) / 1.055, vec3_splat(2.4) );
+ vec3 rgb = mix(hi, lo, vec3(lessThanEqual(_rgb, vec3_splat(0.04045) ) ) );
+ return rgb;
+}
+
+vec4 toLinearAccurate(vec4 _rgba)
+{
+ return vec4(toLinearAccurate(_rgba.xyz), _rgba.w);
+}
+
float toGamma(float _r)
{
return pow(abs(_r), 1.0/2.2);
@@ -198,6 +211,19 @@ vec4 toGamma(vec4 _rgba)
return vec4(toGamma(_rgba.xyz), _rgba.w);
}
+vec3 toGammaAccurate(vec3 _rgb)
+{
+ vec3 lo = _rgb * 12.92;
+ vec3 hi = pow(abs(_rgb), vec3_splat(1.0/2.4) ) * 1.055 - 0.055;
+ vec3 rgb = mix(hi, lo, vec3(lessThanEqual(_rgb, vec3_splat(0.0031308) ) ) );
+ return rgb;
+}
+
+vec4 toGammaAccurate(vec4 _rgba)
+{
+ return vec4(toGammaAccurate(_rgba.xyz), _rgba.w);
+}
+
vec3 toReinhard(vec3 _rgb)
{
return toGamma(_rgb/(_rgb+vec3_splat(1.0) ) );