diff options
Diffstat (limited to 'intern/cycles/kernel/kernels/cuda/kernel_cuda_image.h')
| -rw-r--r-- | intern/cycles/kernel/kernels/cuda/kernel_cuda_image.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernels/cuda/kernel_cuda_image.h b/intern/cycles/kernel/kernels/cuda/kernel_cuda_image.h index 91ad289a858..dcd1b33722a 100644 --- a/intern/cycles/kernel/kernels/cuda/kernel_cuda_image.h +++ b/intern/cycles/kernel/kernels/cuda/kernel_cuda_image.h @@ -58,6 +58,30 @@ ccl_device float cubic_h1(float a) return 1.0f + cubic_w3(a) / (cubic_w2(a) + cubic_w3(a)) + 0.5f; } +ccl_device bool compute_sparse_coordinates(const TextureInfo *info, float fx, float fy, float fz) +{ + float *ix, *iy, *iz; + modff(fx, *ix); + modff(fy, *iy); + modff(fz, *iz); + int x = *ix, y = *iy, z = *iz; + int tix = x / TILE_SIZE, itix = x % TILE_SIZE, + tiy = y / TILE_SIZE, itiy = y % TILE_SIZE, + tiz = z / TILE_SIZE, itiz = z % TILE_SIZE; + int dense_index = (tix + info->tiled_width * (tiy + tiz * info->tiled_height)) * 4; + int tile_x = info->grid_info[dense_index]; + if(tile_x < 0) { + return false; + } + int tile_y = info->grid_info[dense_index + 1]; + int tile_z = info->grid_info[dense_index + 2]; + int dims = info->grid_info[dense_index + 3]; + fx += tile_x + itix + (dims & (1 << ST_SHIFT_X_LHS_PAD)); + fy += tile_y + itiy + (dims & (1 << ST_SHIFT_Y_LHS_PAD)); + fz += tile_z + itiz + (dims & (1 << ST_SHIFT_Z_LHS_PAD)); + return true; +} + /* Fast bicubic texture lookup using 4 bilinear lookups, adapted from CUDA samples. */ template<typename T> ccl_device T kernel_tex_image_interp_bicubic(const TextureInfo& info, CUtexObject tex, float x, float y) @@ -161,6 +185,12 @@ ccl_device float4 kernel_tex_image_interp_3d(KernelGlobals *kg, int id, float x, CUtexObject tex = (CUtexObject)info.data; uint interpolation = (interp == INTERPOLATION_NONE)? info.interpolation: interp; + if(info.grid_info) { + if(!compute_sparse_coordinates(&info, x, y, z)) { + return make_float4(0.0f); + } + } + const int texture_type = kernel_tex_type(id); if(texture_type == IMAGE_DATA_TYPE_FLOAT4 || texture_type == IMAGE_DATA_TYPE_BYTE4 || |