More gles fixes

base/shaders/std/conetrace.glsl

@@ -24,7 +24,7 @@ float trace_cone_ao(sampler3D voxels, const vec3 origin, vec3 dir, const float a
 		sample_pos = dir * dist + origin;
 		float mip = max(log2(diam * voxelgi_resolution), 0.0);
 		float mip_sample = textureLod(voxels, sample_pos * vec3(0.5, 0.5, 0.5) + vec3(0.5, 0.5, 0.5), mip).r;
-		sample_col += (1 - sample_col) * mip_sample;
+		sample_col += (1.0 - sample_col) * mip_sample;
 		dist += max(diam / 2.0, VOXEL_SIZE);
 		diam = dist * aperture;
 	}

base/shaders/std/deferred_light.glsl

@@ -251,7 +251,7 @@ void main() {
 	envl /= PI;
 
 	vec3 reflection_world = reflect(-v, n);
-	float lod = mip_from_roughness(roughness, envmap_num_mipmaps);
+	float lod = mip_from_roughness(roughness, float(envmap_num_mipmaps));
 	vec3 prefiltered_color = textureLod(senvmap_radiance, envmap_equirect(reflection_world, envmap_data.x), lod).rgb;
 
 	envl.rgb *= albedo;