Mirza Halilcevic
107 lines
4.6 KiB
C++
107 lines
4.6 KiB
C++
/*
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Copyright (c) 2023 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#pragma once
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#include <hip/hip_runtime_api.h>
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#include <hip/hip_cooperative_groups.h>
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namespace cg = cooperative_groups;
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__host__ __device__ inline float GetCoordinate(size_t iteration, size_t N, size_t dim,
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size_t num_subdivisions, bool normalized_coords) {
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float x = (static_cast<float>(iteration) - N / 2) / num_subdivisions;
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return normalized_coords ? x / dim : x;
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}
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template <typename TexelType>
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__global__ void tex1DKernel(TexelType* const out, size_t N, hipTextureObject_t tex_obj,
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size_t width, size_t num_subdivisions, bool normalized_coords) {
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const auto tid = cg::this_grid().thread_rank();
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if (tid >= N) return;
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float x = GetCoordinate(tid, N, width, num_subdivisions, normalized_coords);
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out[tid] = tex1D<TexelType>(tex_obj, x);
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}
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template <typename TexelType>
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__global__ void tex2DKernel(TexelType* const out, size_t N_x, size_t N_y,
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hipTextureObject_t tex_obj, size_t width, size_t height,
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size_t num_subdivisions, bool normalized_coords) {
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const auto tid_x = blockIdx.x * blockDim.x + threadIdx.x;
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if (tid_x >= N_x) return;
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const auto tid_y = blockIdx.y * blockDim.y + threadIdx.y;
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if (tid_y >= N_y) return;
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float x = GetCoordinate(tid_x, N_x, width, num_subdivisions, normalized_coords);
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float y = GetCoordinate(tid_y, N_y, height, num_subdivisions, normalized_coords);
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out[tid_y * N_x + tid_x] = tex2D<TexelType>(tex_obj, x, y);
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}
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template <typename TexelType>
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__global__ void tex3DKernel(TexelType* const out, size_t N_x, size_t N_y, size_t N_z,
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hipTextureObject_t tex_obj, size_t width, size_t height, size_t depth,
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size_t num_subdivisions, bool normalized_coords) {
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const auto tid_x = blockIdx.x * blockDim.x + threadIdx.x;
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if (tid_x >= N_x) return;
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const auto tid_y = blockIdx.y * blockDim.y + threadIdx.y;
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if (tid_y >= N_y) return;
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const auto tid_z = blockIdx.z * blockDim.z + threadIdx.z;
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if (tid_z >= N_z) return;
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float x = GetCoordinate(tid_x, N_x, width, num_subdivisions, normalized_coords);
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float y = GetCoordinate(tid_y, N_y, height, num_subdivisions, normalized_coords);
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float z = GetCoordinate(tid_z, N_z, depth, num_subdivisions, normalized_coords);
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out[tid_z * N_x * N_y + tid_y * N_x + tid_x] = tex3D<TexelType>(tex_obj, x, y, z);
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}
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template <typename TexelType>
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__global__ void tex1DLayeredKernel(TexelType* const out, size_t N, hipTextureObject_t tex_obj,
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size_t width, size_t num_subdivisions, bool normalized_coords,
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size_t layer) {
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const auto tid = cg::this_grid().thread_rank();
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if (tid >= N) return;
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float x = GetCoordinate(tid, N, width, num_subdivisions, normalized_coords);
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out[tid] = tex1DLayered<TexelType>(tex_obj, x, layer);
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}
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template <typename TexelType>
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__global__ void tex2DLayeredKernel(TexelType* const out, size_t N_x, size_t N_y,
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hipTextureObject_t tex_obj, size_t width, size_t height,
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size_t num_subdivisions, bool normalized_coords, size_t layer) {
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const auto tid_x = blockIdx.x * blockDim.x + threadIdx.x;
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if (tid_x >= N_x) return;
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const auto tid_y = blockIdx.y * blockDim.y + threadIdx.y;
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if (tid_y >= N_y) return;
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float x = GetCoordinate(tid_x, N_x, width, num_subdivisions, normalized_coords);
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float y = GetCoordinate(tid_y, N_y, height, num_subdivisions, normalized_coords);
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out[tid_y * N_x + tid_x] = tex2DLayered<TexelType>(tex_obj, x, y, layer);
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} |