聚光灯阴影渲染

main.cpp

@@ -188,8 +188,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	float lightPos[] = { 1.0f, 3.0f, -0.8f,1.0f };
 	float diffuseIntensity = 2.0f;
 
-	float spotLightDirection[] = { 0.0f, -1.0f, 0.0f, 128.0f };//把最后一位改成......
-	float spotLightCutoff = 0.0f;
+	float spotLightDirection[] = { 0.0f, -1.0f, 0.0f, 32.0f };//把最后一位改成......
+	float spotLightCutoff = 20.0f;
 
 
 	float specularLightColor[] = { 1.0f,1.0f,1.0f,1.0f };

res/shader/hdr.fs

@@ -89,8 +89,13 @@ void main()
 
 	//gl_FragColor = ambientColor + diffuseColor;
 
-	vec4 color = ambientColor + diffuseColor * vec4(vec3(1.0 - CalculateShadow()),1.0);
-	
+	float shadow = CalculateShadow();
+	vec4 color = vec4(0.0);
+	if(shadow > 0.0){
+		color = ambientColor + diffuseColor * vec4(vec3(0.0),1.0);
+	} else {
+		 color = ambientColor + diffuseColor;
+	}
 
 	gl_FragData[0] = color;
 	gl_FragData[1] = vec4(0.0);