Graphics/DeferredRenderTechnique: Optimize Deferred Shading

No longer copies depth twice


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Former-commit-id: 168792d853247ada5add8f97057c213af7c801b3

src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag

@@ -68,21 +68,6 @@ uniform vec4 SceneAmbient;
 uniform sampler2D TextureOverlay;
 
 /********************Fonctions********************/
-vec3 FloatToColor(float f)
-{
-	vec3 color;
-
-	f *= 256.0;
-	color.x = floor(f);
-
-	f = (f - color.x) * 256.0;
-	color.y = floor(f);
-
-	color.z = f - color.y;
-	color.xy *= 0.00390625; // *= 1.0/256
-
-	return color;
-}
 
 #define kPI 3.1415926536
 
@@ -184,7 +169,7 @@ void main()
 	*/
 	RenderTarget0 = vec4(diffuseColor.rgb, dot(specularColor, vec3(0.3, 0.59, 0.11)));
 	RenderTarget1 = vec4(EncodeNormal(normal));
-	RenderTarget2 = vec4(FloatToColor(gl_FragCoord.z), (MaterialShininess == 0.0) ? 0.0 : max(log2(MaterialShininess), 0.1)/10.5); // http://www.guerrilla-games.com/publications/dr_kz2_rsx_dev07.pdf
+	RenderTarget2 = vec4(0.0, 0.0, 0.0, (MaterialShininess == 0.0) ? 0.0 : max(log2(MaterialShininess), 0.1)/10.5); // http://www.guerrilla-games.com/publications/dr_kz2_rsx_dev07.pdf
 #else // FLAG_DEFERRED
 	#if ALPHA_MAPPING
 	diffuseColor.a *= texture(MaterialAlphaMap, texCoord).r;