1 files changed, 71 insertions, 70 deletions
diff --git a/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl b/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl
index 30dbf5871f..ed0a8a4b86 100644
--- a/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl
+++ b/servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl
@@ -143,10 +143,78 @@ void main() {
 	uint voxel_albedo = process_voxels.data[voxel_index].albedo;
 
 	vec3 albedo = vec3(uvec3(voxel_albedo >> 10, voxel_albedo >> 5, voxel_albedo) & uvec3(0x1F)) / float(0x1F);
-	vec3 light_accum[6];
-
+	vec3 light_accum[6] = vec3[](vec3(0.0), vec3(0.0), vec3(0.0), vec3(0.0), vec3(0.0), vec3(0.0));
 	uint valid_aniso = (voxel_albedo >> 15) & 0x3F;
 
+	const vec3 aniso_dir[6] = vec3[](
+			vec3(1, 0, 0),
+			vec3(0, 1, 0),
+			vec3(0, 0, 1),
+			vec3(-1, 0, 0),
+			vec3(0, -1, 0),
+			vec3(0, 0, -1));
+
+	// Add indirect light first, in order to save computation resources
+#ifdef MODE_PROCESS_DYNAMIC
+	if (params.multibounce) {
+		vec3 pos = (vec3(positioni) + vec3(0.5)) * float(params.probe_axis_size - 1) / params.grid_size;
+		ivec3 probe_base_pos = ivec3(pos);
+
+		float weight_accum[6] = float[](0, 0, 0, 0, 0, 0);
+
+		ivec3 tex_pos = ivec3(probe_base_pos.xy, int(params.cascade));
+		tex_pos.x += probe_base_pos.z * int(params.probe_axis_size);
+
+		tex_pos.xy = tex_pos.xy * (OCT_SIZE + 2) + ivec2(1);
+
+		vec3 base_tex_posf = vec3(tex_pos);
+		vec2 tex_pixel_size = 1.0 / vec2(ivec2((OCT_SIZE + 2) * params.probe_axis_size * params.probe_axis_size, (OCT_SIZE + 2) * params.probe_axis_size));
+		vec3 probe_uv_offset = (ivec3(OCT_SIZE + 2, OCT_SIZE + 2, (OCT_SIZE + 2) * params.probe_axis_size)) * tex_pixel_size.xyx;
+
+		for (uint j = 0; j < 8; j++) {
+			ivec3 offset = (ivec3(j) >> ivec3(0, 1, 2)) & ivec3(1, 1, 1);
+			ivec3 probe_posi = probe_base_pos;
+			probe_posi += offset;
+
+			// Compute weight
+
+			vec3 probe_pos = vec3(probe_posi);
+			vec3 probe_to_pos = pos - probe_pos;
+			vec3 probe_dir = normalize(-probe_to_pos);
+
+			// Compute lightprobe texture position
+
+			vec3 trilinear = vec3(1.0) - abs(probe_to_pos);
+
+			for (uint k = 0; k < 6; k++) {
+				if (bool(valid_aniso & (1 << k))) {
+					vec3 n = aniso_dir[k];
+					float weight = trilinear.x * trilinear.y * trilinear.z * max(0.005, dot(n, probe_dir));
+
+					vec3 tex_posf = base_tex_posf + vec3(octahedron_encode(n) * float(OCT_SIZE), 0.0);
+					tex_posf.xy *= tex_pixel_size;
+
+					vec3 pos_uvw = tex_posf;
+					pos_uvw.xy += vec2(offset.xy) * probe_uv_offset.xy;
+					pos_uvw.x += float(offset.z) * probe_uv_offset.z;
+					vec3 indirect_light = textureLod(sampler2DArray(lightprobe_texture, linear_sampler), pos_uvw, 0.0).rgb;
+
+					light_accum[k] += indirect_light * weight;
+					weight_accum[k] += weight;
+				}
+			}
+		}
+
+		for (uint k = 0; k < 6; k++) {
+			if (weight_accum[k] > 0.0) {
+				light_accum[k] /= weight_accum[k];
+				light_accum[k] *= albedo;
+			}
+		}
+	}
+
+#endif
+
 	{
 		uint rgbe = process_voxels.data[voxel_index].light;
 
@@ -162,18 +230,10 @@ void main() {
 		uint aniso = process_voxels.data[voxel_index].light_aniso;
 		for (uint i = 0; i < 6; i++) {
 			float strength = ((aniso >> (i * 5)) & 0x1F) / float(0x1F);
-			light_accum[i] = l * strength;
+			light_accum[i] += l * strength;
 		}
 	}
 
-	const vec3 aniso_dir[6] = vec3[](
-			vec3(1, 0, 0),
-			vec3(0, 1, 0),
-			vec3(0, 0, 1),
-			vec3(-1, 0, 0),
-			vec3(0, -1, 0),
-			vec3(0, 0, -1));
-
 	// Raytrace light
 
 	vec3 pos_to_uvw = 1.0 / params.grid_size;
@@ -292,65 +352,6 @@ void main() {
 		}
 	}
 
-	// Add indirect light
-
-	if (params.multibounce) {
-		vec3 pos = (vec3(positioni) + vec3(0.5)) * float(params.probe_axis_size - 1) / params.grid_size;
-		ivec3 probe_base_pos = ivec3(pos);
-
-		vec4 probe_accum[6] = vec4[](vec4(0.0), vec4(0.0), vec4(0.0), vec4(0.0), vec4(0.0), vec4(0.0));
-		float weight_accum[6] = float[](0, 0, 0, 0, 0, 0);
-
-		ivec3 tex_pos = ivec3(probe_base_pos.xy, int(params.cascade));
-		tex_pos.x += probe_base_pos.z * int(params.probe_axis_size);
-
-		tex_pos.xy = tex_pos.xy * (OCT_SIZE + 2) + ivec2(1);
-
-		vec3 base_tex_posf = vec3(tex_pos);
-		vec2 tex_pixel_size = 1.0 / vec2(ivec2((OCT_SIZE + 2) * params.probe_axis_size * params.probe_axis_size, (OCT_SIZE + 2) * params.probe_axis_size));
-		vec3 probe_uv_offset = (ivec3(OCT_SIZE + 2, OCT_SIZE + 2, (OCT_SIZE + 2) * params.probe_axis_size)) * tex_pixel_size.xyx;
-
-		for (uint j = 0; j < 8; j++) {
-			ivec3 offset = (ivec3(j) >> ivec3(0, 1, 2)) & ivec3(1, 1, 1);
-			ivec3 probe_posi = probe_base_pos;
-			probe_posi += offset;
-
-			// Compute weight
-
-			vec3 probe_pos = vec3(probe_posi);
-			vec3 probe_to_pos = pos - probe_pos;
-			vec3 probe_dir = normalize(-probe_to_pos);
-
-			// Compute lightprobe texture position
-
-			vec3 trilinear = vec3(1.0) - abs(probe_to_pos);
-
-			for (uint k = 0; k < 6; k++) {
-				if (bool(valid_aniso & (1 << k))) {
-					vec3 n = aniso_dir[k];
-					float weight = trilinear.x * trilinear.y * trilinear.z * max(0.005, dot(n, probe_dir));
-
-					vec3 tex_posf = base_tex_posf + vec3(octahedron_encode(n) * float(OCT_SIZE), 0.0);
-					tex_posf.xy *= tex_pixel_size;
-
-					vec3 pos_uvw = tex_posf;
-					pos_uvw.xy += vec2(offset.xy) * probe_uv_offset.xy;
-					pos_uvw.x += float(offset.z) * probe_uv_offset.z;
-					vec4 indirect_light = textureLod(sampler2DArray(lightprobe_texture, linear_sampler), pos_uvw, 0.0);
-
-					probe_accum[k] += indirect_light * weight;
-					weight_accum[k] += weight;
-				}
-			}
-		}
-
-		for (uint k = 0; k < 6; k++) {
-			if (weight_accum[k] > 0.0) {
-				light_accum[k] += probe_accum[k].rgb * albedo / weight_accum[k];
-			}
-		}
-	}
-
 	// Store the light in the light texture
 
 	float lumas[6];