solved syntax errors

Author: Prapti Devansh Trivedi

cuda_rasterizer/forward.cu

@@ -511,7 +511,7 @@ __global__ void preprocessCUDABatched(
     const int W, int H, const float* tan_fovx, const float* tan_fovy,
     int* radii, float2* points_xy_image, float* depths, float* cov3Ds,
     float* rgb, float4* conic_opacity, const dim3 grid, uint32_t* tiles_touched,
-    bool prefiltered, int num_viewpoints)
+    bool prefiltered, const int num_viewpoints)
 {
     auto point_idx = cg::this_grid().thread_rank();
     auto viewpoint_idx = blockIdx.y;
@@ -614,7 +614,7 @@ void FORWARD::preprocess_batch(int P, int D, int M,
 	const dim3 grid,
 	uint32_t* tiles_touched,
 	bool prefiltered,
-    int num_viewpoints)
+    const int num_viewpoints)
 {
     preprocessCUDABatched<NUM_CHANNELS><<<grid, ONE_DIM_BLOCK_SIZE>>>(
 		P, D, M,
@@ -641,5 +641,6 @@ void FORWARD::preprocess_batch(int P, int D, int M,
 		grid,
 		tiles_touched,
 		prefiltered,
+		num_viewpoints
 		);
 }

cuda_rasterizer/forward.h

@@ -72,7 +72,7 @@ namespace FORWARD
         const dim3 grid,
         uint32_t* tiles_touched,
         bool prefiltered,
-        int num_viewpoints
+        const int num_viewpoints
     );
 
 	// Main rasterization method.

cuda_rasterizer/rasterizer.h

@@ -65,6 +65,31 @@ namespace CudaRasterizer
 			bool debug,//raster_settings
 			const pybind11::dict &args);
 
+		static int preprocessForwardBatches(
+			float2* means2D,
+			float* depths,
+			int* radii,
+			float* cov3D,
+			float4* conic_opacity,
+			float* rgb,
+			bool* clamped,//the above are all per-Gaussian intemediate results.
+			const int P, int D, int M,
+			const int width, int height,
+			const float* means3D,
+			const float* scales,
+			const float* rotations,
+			const float* shs,
+			const float* opacities,//3dgs parameters
+			const float scale_modifier,
+			const float* viewmatrix,
+			const float* projmatrix,
+			const float* cam_pos,
+			const float* tan_fovx, float* tan_fovy,
+			const bool prefiltered,
+			const int num_viewpoints,
+			bool debug,//raster_settings
+			const pybind11::dict &args);
+
 		static void preprocessBackward(
 			const int* radii,
 			const float* cov3D,

cuda_rasterizer/rasterizer_impl.cu

@@ -499,7 +499,8 @@ int CudaRasterizer::Rasterizer::preprocessForwardBatches(
 		conic_opacity,
 		tile_grid,
 		tiles_touched_temp_buffer,
-		prefiltered
+		prefiltered,
+		num_viewpoints
 	), debug)
 	timer.stop("10 preprocess");
 

rasterization_tests.py

@@ -3,11 +3,7 @@
 
 import torch
 
-from diff_gaussian_rasterization import (
-    GaussianRasterizationSettings,
-    GaussianRasterizer,
-    GaussianRasterizerBatches,
-)
+import diff_gaussian_rasterization import (GaussianRasterizationSettings,GaussianRasterizer,GaussianRasterizerBatches)
 
 
 def get_cuda_args(strategy, mode="train"):