279 lines
10 KiB
C++
Executable File
279 lines
10 KiB
C++
Executable File
//
|
|
// KRTextureKTX.cpp
|
|
// KREngine
|
|
//
|
|
// Copyright 2012 Kearwood Gilbert. All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other materials
|
|
// provided with the distribution.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
|
|
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// The views and conclusions contained in the software and documentation are those of the
|
|
// authors and should not be interpreted as representing official policies, either expressed
|
|
// or implied, of Kearwood Gilbert.
|
|
//
|
|
|
|
#include "KRTextureKTX.h"
|
|
#include "KRTextureManager.h"
|
|
|
|
#include "KREngine-common.h"
|
|
|
|
__uint8_t _KTXFileIdentifier[12] = {
|
|
0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A
|
|
};
|
|
|
|
KRTextureKTX::KRTextureKTX(KRContext &context, KRDataBlock *data, std::string name) : KRTexture2D(context, data, name) {
|
|
m_pData->copy(&m_header, 0, sizeof(KTXHeader));
|
|
if(memcmp(_KTXFileIdentifier, m_header.identifier, 12) != 0) {
|
|
assert(false); // Header not recognized
|
|
}
|
|
if(m_header.endianness != 0x04030201) {
|
|
assert(false); // Endianness not (yet) supported
|
|
}
|
|
if(m_header.pixelDepth != 0) {
|
|
assert(false); // 3d textures not (yet) supported
|
|
}
|
|
if(m_header.numberOfArrayElements != 0) {
|
|
assert(false); // Array textures not (yet) supported
|
|
}
|
|
if(m_header.numberOfFaces != 1) {
|
|
assert(false); // Cube-map textures are only supported as a file for each separate face (for now)
|
|
}
|
|
|
|
uint32_t blockStart = sizeof(KTXHeader) + m_header.bytesOfKeyValueData;
|
|
uint32_t width = m_header.pixelWidth, height = m_header.pixelHeight;
|
|
|
|
for(int mipmap_level=0; mipmap_level < (int)KRMAX(m_header.numberOfMipmapLevels, 1); mipmap_level++) {
|
|
uint32_t blockLength;
|
|
data->copy(&blockLength, blockStart, 4);
|
|
blockStart += 4;
|
|
|
|
m_blocks.push_back(m_pData->getSubBlock(blockStart, blockLength));
|
|
|
|
blockStart += blockLength;
|
|
blockStart = KRALIGN(blockStart);
|
|
|
|
width = width >> 1;
|
|
if(width < 1) {
|
|
width = 1;
|
|
}
|
|
height = height >> 1;
|
|
if(height < 1) {
|
|
height = 1;
|
|
}
|
|
}
|
|
|
|
m_max_lod_max_dim = KRMAX(m_header.pixelWidth, m_header.pixelHeight);
|
|
m_min_lod_max_dim = KRMAX(width, height);
|
|
}
|
|
|
|
KRTextureKTX::KRTextureKTX(KRContext &context, std::string name, GLenum internal_format, GLenum base_internal_format, int width, int height, const std::list<KRDataBlock *> &blocks) : KRTexture2D(context, new KRDataBlock(), name)
|
|
{
|
|
memcpy(m_header.identifier, _KTXFileIdentifier, 12);
|
|
m_header.endianness = 0x04030201;
|
|
m_header.glType = 0;
|
|
m_header.glTypeSize = 1;
|
|
m_header.glFormat = 0;
|
|
m_header.glInternalFormat = internal_format;
|
|
m_header.glBaseInternalFormat = base_internal_format;
|
|
m_header.pixelWidth = width;
|
|
m_header.pixelHeight = height;
|
|
m_header.pixelDepth = 0;
|
|
m_header.numberOfArrayElements = 0;
|
|
m_header.numberOfFaces = 1;
|
|
m_header.numberOfMipmapLevels = (__uint32_t)blocks.size();
|
|
m_header.bytesOfKeyValueData = 0;
|
|
|
|
m_pData->append(&m_header, sizeof(m_header));
|
|
for(auto block_itr = blocks.begin(); block_itr != blocks.end(); block_itr++) {
|
|
KRDataBlock *source_block = *block_itr;
|
|
__uint32_t block_size = (__uint32_t)source_block->getSize();
|
|
m_pData->append(&block_size, 4);
|
|
m_pData->append(*source_block);
|
|
m_blocks.push_back(m_pData->getSubBlock((int)m_pData->getSize() - (int)block_size, (int)block_size));
|
|
size_t alignment_padding_size = KRALIGN(m_pData->getSize()) - m_pData->getSize();
|
|
__uint8_t alignment_padding[4] = {0, 0, 0, 0};
|
|
if(alignment_padding_size > 0) {
|
|
m_pData->append(&alignment_padding, alignment_padding_size);
|
|
}
|
|
}
|
|
}
|
|
|
|
KRTextureKTX::~KRTextureKTX() {
|
|
for(std::list<KRDataBlock *>::iterator itr = m_blocks.begin(); itr != m_blocks.end(); itr++) {
|
|
KRDataBlock *block = *itr;
|
|
delete block;
|
|
}
|
|
m_blocks.clear();
|
|
}
|
|
|
|
long KRTextureKTX::getMemRequiredForSize(int max_dim)
|
|
{
|
|
int target_dim = max_dim;
|
|
if(target_dim < (int)m_min_lod_max_dim) target_dim = target_dim;
|
|
|
|
// Determine how much memory will be consumed
|
|
|
|
int width = m_header.pixelWidth;
|
|
int height = m_header.pixelHeight;
|
|
long memoryRequired = 0;
|
|
|
|
for(std::list<KRDataBlock *>::iterator itr = m_blocks.begin(); itr != m_blocks.end(); itr++) {
|
|
KRDataBlock *block = *itr;
|
|
if(width <= target_dim && height <= target_dim) {
|
|
memoryRequired += (long)block->getSize();
|
|
}
|
|
|
|
width = width >> 1;
|
|
if(width < 1) {
|
|
width = 1;
|
|
}
|
|
height = height >> 1;
|
|
if(height < 1) {
|
|
height = 1;
|
|
}
|
|
}
|
|
|
|
return memoryRequired;
|
|
}
|
|
|
|
bool KRTextureKTX::uploadTexture(GLenum target, int lod_max_dim, int ¤t_lod_max_dim, bool compress, bool premultiply_alpha)
|
|
{
|
|
int target_dim = lod_max_dim;
|
|
if(target_dim < (int)m_min_lod_max_dim) target_dim = m_min_lod_max_dim;
|
|
|
|
if(m_blocks.size() == 0) {
|
|
return false;
|
|
}
|
|
|
|
// Determine how much memory will be consumed
|
|
int width = m_header.pixelWidth;
|
|
int height = m_header.pixelHeight;
|
|
long memoryRequired = 0;
|
|
long memoryTransferred = 0;
|
|
|
|
|
|
#if GL_EXT_texture_storage
|
|
|
|
if(target == GL_TEXTURE_CUBE_MAP_POSITIVE_X || target == GL_TEXTURE_2D) {
|
|
// Call glTexStorage2DEXT only for the first uploadTexture used when creating a texture
|
|
int level_count=0;
|
|
int max_lod_width=0;
|
|
int max_lod_height=0;
|
|
for(std::list<KRDataBlock *>::iterator itr = m_blocks.begin(); itr != m_blocks.end(); itr++) {
|
|
if(width <= target_dim && height <= target_dim) {
|
|
if(max_lod_width == 0) {
|
|
max_lod_width = width;
|
|
max_lod_height = height;
|
|
}
|
|
|
|
level_count++;
|
|
}
|
|
|
|
width = width >> 1;
|
|
if(width < 1) {
|
|
width = 1;
|
|
}
|
|
height = height >> 1;
|
|
if(height < 1) {
|
|
height = 1;
|
|
}
|
|
}
|
|
width = m_header.pixelWidth;
|
|
height = m_header.pixelHeight;
|
|
|
|
if(target == GL_TEXTURE_CUBE_MAP_POSITIVE_X) {
|
|
glTexStorage2DEXT(GL_TEXTURE_CUBE_MAP, level_count, (GLenum)m_header.glInternalFormat, max_lod_width, max_lod_height);
|
|
} else if(target == GL_TEXTURE_2D) {
|
|
glTexStorage2DEXT(target, level_count, (GLenum)m_header.glInternalFormat, max_lod_width, max_lod_height);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Upload texture data
|
|
int destination_level=0;
|
|
int source_level = 0;
|
|
for(std::list<KRDataBlock *>::iterator itr = m_blocks.begin(); itr != m_blocks.end(); itr++) {
|
|
KRDataBlock *block = *itr;
|
|
if(width <= target_dim && height <= target_dim) {
|
|
|
|
if(width > current_lod_max_dim) {
|
|
current_lod_max_dim = width;
|
|
}
|
|
if(height > current_lod_max_dim) {
|
|
current_lod_max_dim = height;
|
|
}
|
|
#if GL_APPLE_copy_texture_levels && GL_EXT_texture_storage
|
|
if(target == GL_TEXTURE_2D && width <= m_current_lod_max_dim && height <= m_current_lod_max_dim) {
|
|
//GLDEBUG(glCompressedTexImage2D(target, i, (GLenum)m_header.glInternalFormat, width, height, 0, block.length, NULL)); // Allocate, but don't copy
|
|
// GLDEBUG(glTexImage2D(target, 0, GL_RGBA, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL));
|
|
GLDEBUG(glCopyTextureLevelsAPPLE(m_iNewHandle, m_iHandle, source_level, 1));
|
|
} else {
|
|
block->lock();
|
|
GLDEBUG(glCompressedTexSubImage2D(target, destination_level, 0, 0, width, height, (GLenum)m_header.glInternalFormat, (GLsizei)block->getSize(), block->getStart()));
|
|
block->unlock();
|
|
|
|
memoryTransferred += block->getSize(); // memoryTransferred does not include throughput of mipmap levels copied through glCopyTextureLevelsAPPLE
|
|
}
|
|
#else
|
|
block->lock();
|
|
#if GL_EXT_texture_storage
|
|
GLDEBUG(glCompressedTexSubImage2D(target, destination_level, 0, 0, width, height, (GLenum)m_header.glInternalFormat, (GLsizei)block->getSize(), block->getStart()));
|
|
#else
|
|
GLDEBUG(glCompressedTexImage2D(target, destination_level, (GLenum)m_header.glInternalFormat, width, height, 0, (GLsizei)block->getSize(), block->getStart()));
|
|
#endif
|
|
block->unlock();
|
|
memoryTransferred += (long)block->getSize(); // memoryTransferred does not include throughput of mipmap levels copied through glCopyTextureLevelsAPPLE
|
|
#endif
|
|
memoryRequired += (long)block->getSize();
|
|
//
|
|
// err = glGetError();
|
|
// if (err != GL_NO_ERROR) {
|
|
// assert(false);
|
|
// return false;
|
|
// }
|
|
//
|
|
|
|
destination_level++;
|
|
}
|
|
|
|
if(width <= m_current_lod_max_dim && height <= m_current_lod_max_dim) {
|
|
source_level++;
|
|
}
|
|
|
|
width = width >> 1;
|
|
if(width < 1) {
|
|
width = 1;
|
|
}
|
|
height = height >> 1;
|
|
if(height < 1) {
|
|
height = 1;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
std::string KRTextureKTX::getExtension()
|
|
{
|
|
return "ktx";
|
|
}
|
|
|