Merge pull request #44489 from ForestKatsch/3.2

Fix PanoramaSky artifacts on Android/GLES2

drivers/gles2/rasterizer_storage_gles2.cpp

@@ -1276,11 +1276,8 @@ void RasterizerStorageGLES2::sky_set_texture(RID p_sky, RID p_panorama, int p_ra
 		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, resources.mipmap_blur_color, 0);
 
 		if (lod == 1) {
-			//bind panorama for smaller lods
-
-			glActiveTexture(GL_TEXTURE0);
-			glBindTexture(GL_TEXTURE_CUBE_MAP, sky->radiance);
-			shaders.cubemap_filter.set_conditional(CubemapFilterShaderGLES2::USE_SOURCE_PANORAMA, false);
+			// We set USE_DIRECT_WRITE to false for LOD levels 1 and up, so the shader will properly
+			// filter the roughness instead of just copying 1:1 from the source panorama.
 			shaders.cubemap_filter.set_conditional(CubemapFilterShaderGLES2::USE_DIRECT_WRITE, false);
 			shaders.cubemap_filter.bind();
 		}