fix ssao

res/shaders/background.glslf

@@ -7,7 +7,7 @@ uniform samplerCube u_skybox;
 
 void main(){
     vec3 dir = normalize(v_coord);
-    f_position = vec4(0.0, 0.0, 0.0, 0.0);
+    f_position = vec4(0.0, 0.0, -1e9, 1.0);
     f_normal = vec4(0.0);
     f_color = texture(u_skybox, dir);
 }

res/shaders/effects/ssao.glsl

@@ -1,6 +1,6 @@
 #param vec3 u_ssaoSamples[64]
 #param int u_kernelSize = 16
-#param float u_radius = 0.2
+#param float u_radius = 0.4
 #param float u_bias = 0.006
 
 vec4 effect() {
@@ -32,5 +32,5 @@ vec4 effect() {
 
     float z = -position.z * 0.01;
     z = max(0.0, 1.0 - z);
-    return vec4(occlusion, 0.0, 0.0, 1.0);
+    return vec4(mix(1.0, occlusion, z), 0.0, 0.0, 1.0);
 }

src/graphics/core/GBuffer.cpp

@@ -155,7 +155,6 @@ void GBuffer::bind() {
 
 void GBuffer::bindSSAO() const {
     glBindFramebuffer(GL_FRAMEBUFFER, ssaoFbo);
-    glClear(GL_COLOR_BUFFER_BIT);
 }
 
 void GBuffer::unbind() {

src/graphics/render/WorldRenderer.cpp

@@ -378,7 +378,12 @@ void WorldRenderer::generateShadowsMap(
         t += 1.0f;
     }
     t = fmod(t, 0.5f);
-    float sunAngle = glm::radians(90.0f - (((int)(t*1000)) / 1000.0f + 0.25f) * 360.0f);
+
+    float sunCycleStep = 1.0f / 1000.0f;
+    float sunAngle = glm::radians(
+        90.0f -
+        ((static_cast<int>(t / sunCycleStep)) * sunCycleStep + 0.25f) * 360.0f
+    );
     shadowCamera.rotate(
         sunAngle,
         glm::radians(-45.0f),