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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifdef PLATFORM_HAS_CUDA
#include "CUDABSDFMipmap.h"
#include "cuda.h"
#include "cuda_runtime.h"
#include "cuda_gl_interop.h"
#include "render/backends/Qt3DSRenderBackend.h"
#include "render/Qt3DSRenderTexture2D.h"
#include "foundation/Qt3DSRefCounted.h"
#include "nv_log.h"
using namespace qt3ds;
using namespace qt3ds::render;
using namespace qt3ds::foundation;
__host__ void jerror1(cudaError error);
#ifdef _DEBUG
#define CHECK_AND_HANDLE_CUDA_ERROR(func) \
func; \
{ \
cudaError error = cudaGetLastError(); \
if (error != cudaSuccess) { \
printf("%s\n", cudaGetErrorString(error)); \
jerror1(error); \
QT3DS_ASSERT(false); \
} \
}
#else
#define CHECK_AND_HANDLE_CUDA_ERROR(func) func;
#endif
CUDABSDFMipMap::CUDABSDFMipMap(NVRenderContext *inNVRenderContext, int inWidth, int inHeight,
NVRenderTexture2D &inTexture2D,
NVRenderTextureFormats::Enum inDestFormat, NVFoundationBase &inFnd)
: BSDFMipMap(inNVRenderContext, inWidth, inHeight, inTexture2D, inDestFormat, inFnd)
, m_TextureBinded(false)
{
// CHECK_AND_HANDLE_CUDA_ERROR( cudaFree( 0 ); )
m_Pitches = (size_t *)QT3DS_ALLOC(m_Foundation.getAllocator(),
sizeof(size_t) * m_MaxMipMapLevel + 1, "BSDF MipMap pitches");
md_MipMapsData = (void **)QT3DS_ALLOC(m_Foundation.getAllocator(),
sizeof(void *) * m_MaxMipMapLevel + 1, "BSDF MipMap data");
// CHECK_AND_HANDLE_CUDA_ERROR();
size_t imagePitch;
int width = m_Width;
int height = m_Height;
for (int i = 0; i <= m_MaxMipMapLevel; ++i) {
imagePitch = m_SizeOfFormat * width;
// checkCudaErrors(cudaMalloc((void **)&cuda_dest_resource[mip], size_tex_data));
CHECK_AND_HANDLE_CUDA_ERROR(
cudaMallocPitch((void **)&md_MipMapsData[i], &m_Pitches[i], imagePitch, height);)
CHECK_AND_HANDLE_CUDA_ERROR(cudaMemset(md_MipMapsData[i], -1, m_Pitches[i] * height);)
width = width > 2 ? width >> 1 : 1;
height = height > 2 ? height >> 1 : 1;
}
}
CUDABSDFMipMap::~CUDABSDFMipMap()
{
// CHECK_AND_HANDLE_CUDA_ERROR( cudaDeviceReset(); )
CHECK_AND_HANDLE_CUDA_ERROR(cudaDeviceSynchronize();)
for (int i = 0; i <= m_MaxMipMapLevel; ++i) {
CHECK_AND_HANDLE_CUDA_ERROR(cudaFree(md_MipMapsData[i]);)
}
QT3DS_FREE(m_Foundation.getAllocator(), md_MipMapsData);
QT3DS_FREE(m_Foundation.getAllocator(), m_Pitches);
}
void CUDABSDFMipMap::BindTexture()
{
if (!m_TextureBinded) {
m_TextureBinded = true;
int width = m_Width;
int height = m_Height;
for (int i = 0; i <= m_MaxMipMapLevel; ++i) {
// if you wwant to change some texture filter settings use m_Texture2D object
m_Texture2D.SetTextureData(NVDataRef<QT3DSU8>(), (QT3DSU8)i, width, height,
NVRenderTextureFormats::RGBA16F,
NVRenderTextureFormats::RGBA16F);
width = width > 2 ? width >> 1 : 1;
height = height > 2 ? height >> 1 : 1;
}
// CHECK_AND_HANDLE_CUDA_ERROR( cudaGraphicsGLRegisterImage( &m_CudaMipMapResource,
// (GLuint)m_TextureHandle, GL_TEXTURE_2D, cudaGraphicsRegisterFlagsWriteDiscard |
// cudaGraphicsRegisterFlagsTextureGather) )
CHECK_AND_HANDLE_CUDA_ERROR(cudaGraphicsGLRegisterImage(
&m_CudaMipMapResource, (GLuint)m_TextureHandle, GL_TEXTURE_2D,
cudaGraphicsRegisterFlagsWriteDiscard | cudaGraphicsRegisterFlagsTextureGather))
}
}
void CUDABSDFMipMap::TransferTexture() // after cuda generation
{
cudaArray *texturePtr;
CHECK_AND_HANDLE_CUDA_ERROR(cudaGraphicsMapResources(1, &m_CudaMipMapResource, 0))
int width = m_Width;
int height = m_Height;
for (int i = 0; i <= m_MaxMipMapLevel; ++i) {
CHECK_AND_HANDLE_CUDA_ERROR(
cudaGraphicsSubResourceGetMappedArray(&texturePtr, m_CudaMipMapResource, 0, i))
CHECK_AND_HANDLE_CUDA_ERROR(cudaMemcpy2DToArray(texturePtr, 0, 0, md_MipMapsData[i],
m_Pitches[i], width * m_SizeOfFormat,
height, cudaMemcpyDeviceToDevice));
width = width > 2 ? width >> 1 : 1;
height = height > 2 ? height >> 1 : 1;
}
CHECK_AND_HANDLE_CUDA_ERROR(cudaGraphicsUnmapResources(1, &m_CudaMipMapResource, 0))
}
#endif
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