wip for shadows

they work, but will be shit until we get cascaded.

include/Engine/Rendering/ShadowPass.h

@@ -58,8 +58,8 @@ private:
     glm::mat4 m_LightView;
     glm::mat4 m_LightSpaceMatrix;
 
-    GLuint resolutionSizeWidth = 2048 * 2;
-    GLuint resolutionSizeHeigth = 2048 * 2;
+    GLuint resolutionSizeWidth = 1024 * 8;
+    GLuint resolutionSizeHeigth = 1024 * 8;
 
     bool m_ShadowOn = true;
 };

resources/Shaders/ForwardPlus.frag.glsl

@@ -114,18 +114,53 @@ vec4 CalcNormalMappedValue(vec3 normal, vec3 tangent, vec3 bitangent, vec2 textu
 	return vec4(TBN * normalize(NormalMap), 0.0);
 }
 
+vec2 poissonDisk[16] = vec2[]( 
+   vec2( -0.94201624, -0.39906216 ), 
+   vec2( 0.94558609, -0.76890725 ), 
+   vec2( -0.094184101, -0.92938870 ), 
+   vec2( 0.34495938, 0.29387760 ), 
+   vec2( -0.91588581, 0.45771432 ), 
+   vec2( -0.81544232, -0.87912464 ), 
+   vec2( -0.38277543, 0.27676845 ), 
+   vec2( 0.97484398, 0.75648379 ), 
+   vec2( 0.44323325, -0.97511554 ), 
+   vec2( 0.53742981, -0.47373420 ), 
+   vec2( -0.26496911, -0.41893023 ), 
+   vec2( 0.79197514, 0.19090188 ), 
+   vec2( -0.24188840, 0.99706507 ), 
+   vec2( -0.81409955, 0.91437590 ), 
+   vec2( 0.19984126, 0.78641367 ), 
+   vec2( 0.14383161, -0.14100790 ) 
+);
+
+float random(vec3 seed, int i)
+{
+	vec4 seed4 = vec4(seed, i);
+	float dot_product = dot(seed4, vec4(12.9898, 78.233, 45.164, 94.673));
+	return fract(sin(dot_product) * 43758.5453);
+}
+
 float CalcShadowValue(vec4 positionLightSpace, vec3 normal, vec3 lightDir, sampler2DShadow depthTexture)
 {
 	
 	float bias = 0.005;
 	//float bias = max(0.05 * (1.0 - dot(normal, lightDir)), 0.005);
-	//float bias = 0.005 * tan(acos(clamp(dot(normal, lightDir), 0,1))); bias = clamp(bias, 0,0.01);
+	//float bias = 0.005 * tan(acos(clamp(dot(normal, -lightDir), 0.0, 1.0)));
 	
     vec3 projCoords = vec3(positionLightSpace.xy, positionLightSpace.z + bias) / positionLightSpace.w;
     projCoords = projCoords * 0.5 + 0.5;
     //float shadowMapDepth = texture(depthTexture, projCoords.xy).r; 
-    float shadowMapDepth = texture(depthTexture, projCoords); 
-	float geometryDepth = projCoords.z;
+	float shadowMapDepth;
+    //for (int i = 0; i < 4; i++)
+	//{
+	//	int index = i;
+	//	//int index = int(16.0 * random(gl_FragCoord.xyy, i)) % 16;
+	//	shadowMapDepth += 0.25 * texture(depthTexture, projCoords + vec3(poissonDisk[index], 0.0) / 700.0); 
+	//}
+	
+	shadowMapDepth = texture(depthTexture, projCoords);
+	
+	//float geometryDepth = projCoords.z;
 	//float shadow = geometryDepth - bias > shadowMapDepth ? 1.0 : 0.0;
 	//float shadow = 1.0 - bias > shadowMapDepth ? 0.0 : 1.0;
 	
@@ -193,8 +228,8 @@ void main()
 		totalLighting.Specular += light_result.Specular; 
 	}
 
-	totalLighting.Diffuse *= (1.0 + vec4(AmbientColor.rgb, 1.0)) - vec4(vec3(shadowFactor), 0.0); 
-	totalLighting.Specular *= (1.0 + vec4(AmbientColor.rgb, 1.0)) - vec4(vec3(shadowFactor), 0.0);
+	totalLighting.Diffuse *= (1.5 + vec4(AmbientColor.rgb, 1.0)) - vec4(vec3(shadowFactor), 0.0); 
+	totalLighting.Specular *= (1.5 + vec4(AmbientColor.rgb, 1.0)) - vec4(vec3(shadowFactor), 0.0);
 	
 	//LightResult getInformation;