BlocksRenderer light compressing & fix

res/shaders/main.glslv

@@ -2,7 +2,7 @@
 
 layout (location = 0) in vec3 v_position;
 layout (location = 1) in vec2 v_texCoord;
-layout (location = 2) in vec4 v_light;
+layout (location = 2) in float v_light;
 
 out vec4 a_color;
 out vec2 a_texCoord;
@@ -18,18 +18,27 @@ uniform float u_gamma;
 uniform vec3 u_torchlightColor;
 uniform float u_torchlightDistance;
 
+vec4 decompress_light(float compressed_light) {
+	vec4 result;
+    int compressed = floatBitsToInt(compressed_light);
+    result.r = ((compressed >> 24) & 0xFF) / 255.f;
+    result.g = ((compressed >> 16) & 0xFF) / 255.f;
+    result.b = ((compressed >> 8) & 0xFF) / 255.f;
+    result.a = (compressed & 0xFF) / 255.f;
+	return result;
+}
+
 void main(){
 	vec2 pos2d = (u_model * vec4(v_position, 1.0)).xz-u_cameraPos.xz;
 	vec4 modelpos = u_model * vec4(v_position+vec3(0,pow(length(pos2d)*0.0, 3.0),0), 1.0);
 	vec4 viewmodelpos = u_view * modelpos;
-	vec3 light = v_light.rgb * 1.6;
+	vec4 decomp_light = decompress_light(v_light);
+	vec3 light = decomp_light.rgb * 1.6;
 	float torchlight = max(0.0, 1.0-distance(u_cameraPos, modelpos.xyz)/u_torchlightDistance);
 	light += torchlight * u_torchlightColor;
 	a_color = vec4(pow(light, vec3(u_gamma)),1.0f);
 	a_texCoord = v_texCoord;
-	a_color.r = max(a_color.r, u_skyLightColor.r*v_light.a);
-	a_color.g = max(a_color.g, u_skyLightColor.g*v_light.a);
-	a_color.b = max(a_color.b, u_skyLightColor.b*v_light.a);
+	a_color.rgb = max(a_color.rgb, u_skyLightColor.rgb*decomp_light.a);
 	a_distance = length(viewmodelpos);
 	gl_Position = u_proj * viewmodelpos;
 }