diff options
Diffstat (limited to 'drivers/gles3/shaders/tonemap.glsl')
| -rw-r--r-- | drivers/gles3/shaders/tonemap.glsl | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/gles3/shaders/tonemap.glsl b/drivers/gles3/shaders/tonemap.glsl index 626968bc05..f1fe1742eb 100644 --- a/drivers/gles3/shaders/tonemap.glsl +++ b/drivers/gles3/shaders/tonemap.glsl @@ -164,7 +164,8 @@ vec3 linear_to_srgb(vec3 color) { // convert linear rgb to srgb, assumes clamped return mix((vec3(1.0f) + a) * pow(color.rgb, vec3(1.0f / 2.4f)) - a, 12.92f * color.rgb, lessThan(color.rgb, vec3(0.0031308f))); } -vec3 apply_tonemapping(vec3 color, float white) { // inputs are LINEAR, always outputs clamped [0;1] color +// inputs are LINEAR, If Linear tonemapping is selected no transform is performed else outputs are clamped [0, 1] color +vec3 apply_tonemapping(vec3 color, float white) { #ifdef USE_REINHARD_TONEMAPPER return tonemap_reinhard(color, white); #endif @@ -177,7 +178,7 @@ vec3 apply_tonemapping(vec3 color, float white) { // inputs are LINEAR, always o return tonemap_aces(color, white); #endif - return clamp(color, vec3(0.0f), vec3(1.0f)); // no other selected -> linear + return color; // no other selected -> linear: no color transform applied } vec3 gather_glow(sampler2D tex, vec2 uv) { // sample all selected glow levels @@ -220,10 +221,14 @@ vec3 apply_glow(vec3 color, vec3 glow) { // apply glow using the selected blendi #endif #ifdef USE_GLOW_SCREEN + //need color clamping + color = clamp(color, vec3(0.0f), vec3(1.0f)); color = max((color + glow) - (color * glow), vec3(0.0)); #endif #ifdef USE_GLOW_SOFTLIGHT + //need color clamping + color = clamp(color, vec3(0.0f), vec3(1.0)); glow = glow * vec3(0.5f) + vec3(0.5f); color.r = (glow.r <= 0.5f) ? (color.r - (1.0f - 2.0f * glow.r) * color.r * (1.0f - color.r)) : (((glow.r > 0.5f) && (color.r <= 0.25f)) ? (color.r + (2.0f * glow.r - 1.0f) * (4.0f * color.r * (4.0f * color.r + 1.0f) * (color.r - 1.0f) + 7.0f * color.r)) : (color.r + (2.0f * glow.r - 1.0f) * (sqrt(color.r) - color.r))); @@ -265,14 +270,16 @@ void main() { color *= exposure; - // Early Tonemap & SRGB Conversion + // Early Tonemap & SRGB Conversion; note that Linear tonemapping does not clamp to [0, 1]; some operations below expect a [0, 1] range and will clamp color = apply_tonemapping(color, white); #ifdef KEEP_3D_LINEAR // leave color as is (-> don't convert to SRGB) #else - color = linear_to_srgb(color); // regular linear -> SRGB conversion + //need color clamping + color = clamp(color, vec3(0.0f), vec3(1.0f)); + color = linear_to_srgb(color); // regular linear -> SRGB conversion (needs clamped values) #endif // Glow @@ -282,6 +289,7 @@ void main() { // high dynamic range -> SRGB glow = apply_tonemapping(glow, white); + glow = clamp(glow, vec3(0.0f), vec3(1.0f)); glow = linear_to_srgb(glow); color = apply_glow(color, glow); |