OpenGL2: Merge several cvars into r_pbr.

r_glossIsRoughness, r_specularIsMetallic, r_framebufferGamma, r_tonemapGamma, r_materialGamma, r_lightGamma

3 files changed, 25 insertions, 35 deletions

diff --git a/src/renderergl2/glsl/calclevels4x_fp.glsl b/src/renderergl2/glsl/calclevels4x_fp.glsl
index 1de59e9f..0d298b62 100644
--- a/src/renderergl2/glsl/calclevels4x_fp.glsl
+++ b/src/renderergl2/glsl/calclevels4x_fp.glsl
@@ -14,8 +14,8 @@ vec3 GetValues(vec2 offset, vec3 current)
 
 #ifdef FIRST_PASS
 
-  #if defined(r_framebufferGamma)
-	minAvgMax = pow(minAvgMax, vec3(r_framebufferGamma));
+  #if defined(USE_PBR)
+	minAvgMax = pow(minAvgMax, vec3(2.2));
   #endif
 
 	float lumi = max(dot(LUMINANCE_VECTOR, minAvgMax), 0.000001);
diff --git a/src/renderergl2/glsl/lightall_fp.glsl b/src/renderergl2/glsl/lightall_fp.glsl
index b8f3985f..eb8ba900 100644
--- a/src/renderergl2/glsl/lightall_fp.glsl
+++ b/src/renderergl2/glsl/lightall_fp.glsl
@@ -276,9 +276,9 @@ void main()
 	attenuation  = 1.0;
   #endif
 
-  #if defined(r_lightGamma)
-	lightColor   = pow(lightColor,   vec3(r_lightGamma));
-	ambientColor = pow(ambientColor, vec3(r_lightGamma));
+  #if defined(USE_PBR)
+	lightColor   = pow(lightColor,   vec3(2.2));
+	ambientColor = pow(ambientColor, vec3(2.2));
   #endif
 
   #if defined(USE_NORMALMAP)
@@ -319,7 +319,7 @@ void main()
 
 	// Recover any unused light as ambient, in case attenuation is over 4x or
 	// light is below the surface
-	ambientColor = clamp(ambientColor - lightColor * surfNL, 0.0, 1.0);
+	ambientColor = max(ambientColor - lightColor * surfNL, vec3(0.0));
   #endif
   
 	vec3 reflectance;
@@ -335,21 +335,18 @@ void main()
 
 	specular *= u_SpecularScale;
 
-  #if defined(r_materialGamma)
-	diffuse.rgb   = pow(diffuse.rgb,  vec3(r_materialGamma));
-    #if !defined(SPECULAR_IS_METALLIC)
-	specular.rgb  = pow(specular.rgb, vec3(r_materialGamma));
-    #endif
+  #if defined(USE_PBR)
+	diffuse.rgb = pow(diffuse.rgb, vec3(2.2));
   #endif
 
 	float gloss = specular.a;
-  #if defined(GLOSS_IS_ROUGHNESS)
-	float roughness = gloss;
+  #if defined(USE_PBR)
+	float roughness = 1.0 - specular.r;
   #else
 	float roughness = exp2(-3.0 * gloss);
   #endif
 
-  #if defined(SPECULAR_IS_METALLIC)
+  #if defined(USE_PBR)
 	// diffuse is actually base color, and green of specular is metallicness
 	float metallic = specular.g;
 
@@ -374,7 +371,7 @@ void main()
 	// from http://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/
 	vec3 parallax = u_CubeMapInfo.xyz + u_CubeMapInfo.w * viewDir;
 
-    #if defined(GLOSS_IS_ROUGHNESS)
+    #if defined(USE_PBR)
 	vec3 cubeLightColor = textureCubeLod(u_CubeMap, R + parallax, 7.0 * roughness).rgb * u_EnableTextures.w;
     #else
 	vec3 cubeLightColor = textureCubeLod(u_CubeMap, R + parallax, 7.0 - gloss * 7.0).rgb * u_EnableTextures.w;
@@ -385,8 +382,8 @@ void main()
 	//vec3 cubeLightDiffuse = max(textureCubeLod(u_CubeMap, N, 6.0).rgb, 0.5 / 255.0);
 	//cubeLightColor /= dot(cubeLightDiffuse, vec3(0.2125, 0.7154, 0.0721));
 
-    #if defined(r_framebufferGamma)
-	cubeLightColor = pow(cubeLightColor, vec3(r_framebufferGamma));
+    #if defined(USE_PBR)
+	cubeLightColor = pow(cubeLightColor, vec3(2.2));
     #endif
 
 	// multiply cubemap values by lighting
@@ -421,8 +418,8 @@ void main()
 
 	lightColor = u_PrimaryLightColor;
 
-    #if defined(r_lightGamma)
-	lightColor = pow(lightColor, vec3(r_lightGamma));
+    #if defined(USE_PBR)
+	lightColor = pow(lightColor, vec3(2.2));
     #endif
 
     #if defined(USE_SHADOWMAP)
@@ -434,6 +431,11 @@ void main()
 
 	gl_FragColor.rgb += lightColor * reflectance * NL2;
   #endif
+
+  #if defined(USE_PBR)
+	gl_FragColor.rgb = pow(gl_FragColor.rgb, vec3(1.0 / 2.2));
+  #endif
+
 #else
 	lightColor = var_Color.rgb;
 
@@ -441,21 +443,9 @@ void main()
 	lightColor *= lightmapColor.rgb;
   #endif
 
-  #if defined(r_lightGamma)
-	lightColor = pow(lightColor, vec3(r_lightGamma));
-  #endif
-
-  #if defined(r_materialGamma)
-	diffuse.rgb   = pow(diffuse.rgb,  vec3(r_materialGamma));
-  #endif
-
 	gl_FragColor.rgb = diffuse.rgb * lightColor;
 
 #endif
 
-#if defined(r_framebufferGamma)
-	gl_FragColor.rgb = pow(gl_FragColor.rgb, vec3(1.0 / r_framebufferGamma));
-#endif
-
 	gl_FragColor.a = diffuse.a * var_Color.a;
 }
diff --git a/src/renderergl2/glsl/tonemap_fp.glsl b/src/renderergl2/glsl/tonemap_fp.glsl
index 1368c5bd..5d8841d6 100644
--- a/src/renderergl2/glsl/tonemap_fp.glsl
+++ b/src/renderergl2/glsl/tonemap_fp.glsl
@@ -28,8 +28,8 @@ void main()
 {
 	vec4 color = texture2D(u_TextureMap, var_TexCoords) * u_Color;
 
-#if defined(r_framebufferGamma)
-	color.rgb = pow(color.rgb, vec3(r_framebufferGamma));
+#if defined(USE_PBR)
+	color.rgb = pow(color.rgb, vec3(2.2));
 #endif
 
 	vec3 minAvgMax = texture2D(u_LevelsMap, var_TexCoords).rgb;
@@ -46,8 +46,8 @@ void main()
 
 	color.rgb = clamp(color.rgb * var_InvWhite, 0.0, 1.0);
 
-#if defined(r_tonemapGamma)
-	color.rgb = pow(color.rgb, vec3(1.0 / r_tonemapGamma));
+#if defined(USE_PBR)
+	color.rgb = pow(color.rgb, vec3(1.0 / 2.2));
 #endif
 
 	gl_FragColor = color;