Mirrors/overte-lubosz
3
0
Fork 0
mirror of https://github.com/lubosz/overte.git synced 2025-04-23 07:43:57 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Factorizing the code...

Browse source
This commit is contained in:
samcake 2017-04-28 17:34:15 -07:00
parent 83618d45a2
commit 04895864b5
1 changed files with 85 additions and 152 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

237
libraries/gpu-gl/src/gpu/gl41/GL41BackendTexture.cpp
View file

@ -308,6 +308,87 @@ void GL41VariableAllocationTexture::syncSampler() const {
});
}
void copyCompressedTexGPUMem(GLenum texTarget, GLuint srcId, GLuint destId, uint16_t numMips, uint16_t srcAllocatedMip, uint16_t destAllocatedMip, uint16_t populatedMips) {
GLuint pbo { 0 };
glGenBuffers(1, &pbo);
glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo);
struct MipDesc {
GLint _faceSize;
GLint _size;
GLint _offset;
GLint _width;
GLint _height;
};
std::vector<MipDesc> sourceMips(numMips);
glActiveTexture(GL_TEXTURE0 + GL41Backend::RESOURCE_TRANSFER_EXTRA_TEX_UNIT);
glBindTexture(texTarget, srcId);
const auto& faceTargets = GLTexture::getFaceTargets(texTarget);
GLint internalFormat { 0 };
// Collect the mip description from the source texture
GLint bufferOffset { 0 };
for (uint16_t mip = populatedMips; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t sourceLevel = mip - srcAllocatedMip;
// Grab internal format once
if (internalFormat != 0) {
glGetTexLevelParameteriv(faceTargets[0], sourceLevel, GL_TEXTURE_INTERNAL_FORMAT, &internalFormat);
}
// Collect the size of the first face, and then compute the total size offset needed for this mip level
glGetTexLevelParameteriv(faceTargets.front(), sourceLevel, GL_TEXTURE_WIDTH, &sourceMip._width);
glGetTexLevelParameteriv(faceTargets.front(), sourceLevel, GL_TEXTURE_HEIGHT, &sourceMip._height);
glGetTexLevelParameteriv(faceTargets.front(), sourceLevel, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &sourceMip._faceSize);
sourceMip._size = (GLint)faceTargets.size() * sourceMip._faceSize;
sourceMip._offset = bufferOffset;
bufferOffset += sourceMip._size;
}
(void)CHECK_GL_ERROR();
// Allocate the PBO to accomodate for all the mips to copy
glBufferData(GL_PIXEL_PACK_BUFFER, bufferOffset, nullptr, GL_STREAM_COPY);
(void)CHECK_GL_ERROR();
// Transfer from source texture to pbo
for (uint16_t mip = populatedMips; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t sourceLevel = mip - srcAllocatedMip;
for (GLint f = 0; f < faceTargets.size(); f++) {
glGetCompressedTexImage(faceTargets[f], sourceLevel, (void*)(sourceMip._offset + f * sourceMip._faceSize));
}
(void)CHECK_GL_ERROR();
}
// Now populate the new texture from the pbo
glBindTexture(texTarget, 0);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
glActiveTexture(GL_TEXTURE0 + GL41Backend::RESOURCE_TRANSFER_TEX_UNIT);
// Transfer from pbo to new texture
for (uint16_t mip = populatedMips; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t destLevel = mip - destAllocatedMip;
for (GLint f = 0; f < faceTargets.size(); f++) {
glCompressedTexImage2D(faceTargets[f], destLevel, internalFormat, sourceMip._width, sourceMip._height, 0,
sourceMip._faceSize, (void*)(sourceMip._offset + f * sourceMip._faceSize));
}
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffers(1, &pbo);
}
void GL41VariableAllocationTexture::promote() {
PROFILE_RANGE(render_gpu_gl, __FUNCTION__);
Q_ASSERT(_allocatedMip > 0);
@ -346,87 +427,11 @@ void GL41VariableAllocationTexture::promote() {
syncSampler();
});
#else
GLuint pbo { 0 };
glGenBuffers(1, &pbo);
glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo);
uint16_t numMips = _gpuObject.getNumMips();
struct MipDesc {
GLint _faceSize;
GLint _size;
GLint _offset;
gpu::Vec3u _dims;
};
std::vector<MipDesc> sourceMips(numMips);
glActiveTexture(GL_TEXTURE0 + GL41Backend::RESOURCE_TRANSFER_EXTRA_TEX_UNIT);
glBindTexture(_target, oldId);
const auto& faceTargets = getFaceTargets(_target);
GLint internalFormat { 0 };
(void)CHECK_GL_ERROR();
// Collect the mip description from the source texture
GLint bufferOffset { 0 };
for (uint16_t mip = _populatedMip; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
sourceMip._dims = _gpuObject.evalMipDimensions(mip);
uint16_t sourceLevel = mip - oldAllocatedMip;
// Grab internal format once
if (internalFormat == 0) {
glGetTexLevelParameteriv(faceTargets[0], sourceLevel, GL_TEXTURE_INTERNAL_FORMAT, &internalFormat);
}
// Collect the size of the first face, and then compute the total size offset needed for this mip level
glGetTexLevelParameteriv(faceTargets.front(), sourceLevel, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &sourceMip._faceSize);
sourceMip._size = (GLint) faceTargets.size() * sourceMip._faceSize;
sourceMip._offset = bufferOffset;
bufferOffset += sourceMip._size;
}
(void)CHECK_GL_ERROR();
// Allocate the PBO to accomodate for all the mips to copy
glBufferData(GL_PIXEL_PACK_BUFFER, bufferOffset, nullptr, GL_STREAM_COPY);
(void)CHECK_GL_ERROR();
// Transfer from source texture to pbo
for (uint16_t mip = _populatedMip; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t sourceLevel = mip - oldAllocatedMip;
for (GLint f = 0; f < faceTargets.size(); f++) {
glGetCompressedTexImage(faceTargets[f], sourceLevel, (void*)(sourceMip._offset + f * sourceMip._faceSize));
}
(void)CHECK_GL_ERROR();
}
// Now populate the new texture from the pbo
glBindTexture(_target, 0);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
glActiveTexture(GL_TEXTURE0 + GL41Backend::RESOURCE_TRANSFER_TEX_UNIT);
glBindTexture(_target, _texture);
// Transfer from pbo to new texture
for (uint16_t mip = _populatedMip; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t destLevel = mip - _allocatedMip;
for (GLint f = 0; f < faceTargets.size(); f++) {
glCompressedTexImage2D(faceTargets[f], destLevel, internalFormat, sourceMip._dims.x, sourceMip._dims.y, 0,
sourceMip._faceSize, (void*)(sourceMip._offset + f * sourceMip._faceSize));
}
}
withPreservedTexture([&] {
copyCompressedTexGPUMem(_target, oldId, _id, numMips, oldAllocatedMip, _allocatedMip, _populatedMip);
syncSampler();
glBindTexture(_target, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffers(1, &pbo);
});
#endif
} else {
withPreservedTexture([&] {
@ -495,82 +500,11 @@ void GL41VariableAllocationTexture::demote() {
syncSampler();
});
#else
GLuint pbo { 0 };
glGenBuffers(1, &pbo);
glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo);
uint16_t numMips = _gpuObject.getNumMips();
struct MipDesc {
GLint _faceSize;
GLint _size;
GLint _offset;
gpu::Vec3u _dims;
};
std::vector<MipDesc> sourceMips(numMips);
glActiveTexture(GL_TEXTURE0 + GL41Backend::RESOURCE_TRANSFER_EXTRA_TEX_UNIT);
glBindTexture(_target, oldId);
const auto& faceTargets = getFaceTargets(_target);
GLint internalFormat { 0 };
// Collect the mip description from the source texture
GLint bufferOffset { 0 };
for (uint16_t mip = _populatedMip; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
sourceMip._dims = _gpuObject.evalMipDimensions(mip);
uint16_t sourceLevel = mip - oldAllocatedMip;
// Grab internal format once
if (internalFormat != 0) {
glGetTexLevelParameteriv(faceTargets[0], sourceLevel, GL_TEXTURE_INTERNAL_FORMAT, &internalFormat);
}
// Collect the size of the first face, and then compute the total size offset needed for this mip level
glGetTexLevelParameteriv(faceTargets.front(), sourceLevel, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &sourceMip._faceSize);
sourceMip._size = (GLint) faceTargets.size() * sourceMip._faceSize;
sourceMip._offset = bufferOffset;
bufferOffset += sourceMip._size;
}
(void)CHECK_GL_ERROR();
// Allocate the PBO to accomodate for all the mips to copy
glBufferData(GL_PIXEL_PACK_BUFFER, bufferOffset, nullptr, GL_STREAM_COPY);
(void)CHECK_GL_ERROR();
// Transfer from source texture to pbo
for (uint16_t mip = _populatedMip; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t sourceLevel = mip - oldAllocatedMip;
for (GLint f = 0; f < faceTargets.size(); f++) {
glGetCompressedTexImage(faceTargets[f], sourceLevel, (void*) (sourceMip._offset + f * sourceMip._faceSize));
}
(void)CHECK_GL_ERROR();
}
// Now populate the new texture from the pbo
glBindTexture(_target, 0);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
withPreservedTexture([&] {
// Transfer from pbo to new texture
for (uint16_t mip = _populatedMip; mip < numMips; ++mip) {
auto& sourceMip = sourceMips[mip];
uint16_t destLevel = mip - _allocatedMip;
for (GLint f = 0; f < faceTargets.size(); f++) {
glCompressedTexImage2D(faceTargets[f], destLevel, internalFormat, sourceMip._dims.x, sourceMip._dims.y, 0,
sourceMip._faceSize, (void*)(sourceMip._offset + f * sourceMip._faceSize));
}
}
copyCompressedTexGPUMem(_target, oldId, _id, numMips, oldAllocatedMip, _allocatedMip, _populatedMip);
syncSampler();
});
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffers(1, &pbo);
#endif
} else {
withPreservedTexture([&] {
@ -668,4 +602,3 @@ GL41ResourceTexture::GL41ResourceTexture(const std::weak_ptr<GLBackend>& backend
GL41ResourceTexture::~GL41ResourceTexture() {
}