cocos_lib/cocos/renderer/gfx-gles2/GLES2Texture.cpp

/****************************************************************************
 Copyright (c) 2019-2023 Xiamen Yaji Software Co., Ltd.

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#include "GLES2Std.h"

#include "GLES2Commands.h"
#include "GLES2Device.h"
#include "GLES2Swapchain.h"
#include "GLES2Texture.h"
#include "profiler/Profiler.h"

namespace cc {
namespace gfx {

GLES2Texture::GLES2Texture() {
    _typedID = generateObjectID<decltype(this)>();
}

GLES2Texture::~GLES2Texture() {
    destroy();
}

void GLES2Texture::doInit(const TextureInfo & /*info*/) {
    _gpuTexture = ccnew GLES2GPUTexture;
    _gpuTexture->type = _info.type;
    _gpuTexture->format = _info.format;
    _gpuTexture->usage = _info.usage;
    _gpuTexture->width = _info.width;
    _gpuTexture->height = _info.height;
    _gpuTexture->depth = _info.depth;
    _gpuTexture->arrayLayer = _info.layerCount;
    _gpuTexture->mipLevel = _info.levelCount;
    _gpuTexture->samples = _info.samples;
    _gpuTexture->flags = _info.flags;
    _gpuTexture->size = _size;
    _gpuTexture->isPowerOf2 = math::isPowerOfTwo(_info.width) && math::isPowerOfTwo(_info.height);
    _gpuTexture->glTexture = static_cast<GLuint>(reinterpret_cast<size_t>(_info.externalRes));

    cmdFuncGLES2CreateTexture(GLES2Device::getInstance(), _gpuTexture);

    if (_gpuTexture->memoryAllocated) {
        GLES2Device::getInstance()->getMemoryStatus().textureSize += _size;
        CC_PROFILE_MEMORY_INC(Texture, _size);
    }
}

void GLES2Texture::doInit(const TextureViewInfo &info) {
    _gpuTexture = static_cast<GLES2Texture *>(info.texture)->gpuTexture();
}

void GLES2Texture::doDestroy() {
    if (_gpuTexture) {
        if (!_isTextureView) {
            if (_gpuTexture->memoryAllocated) {
                GLES2Device::getInstance()->getMemoryStatus().textureSize -= _size;
                CC_PROFILE_MEMORY_DEC(Texture, _size);
            }
            cmdFuncGLES2DestroyTexture(GLES2Device::getInstance(), _gpuTexture);
            GLES2Device::getInstance()->framebufferHub()->disengage(_gpuTexture);
            delete _gpuTexture;
        }
        _gpuTexture = nullptr;
    }
}

void GLES2Texture::doResize(uint32_t width, uint32_t height, uint32_t size) {
    if (_gpuTexture->memoryAllocated) {
        GLES2Device::getInstance()->getMemoryStatus().textureSize -= _size;
        CC_PROFILE_MEMORY_DEC(Texture, _size);
    }
    _gpuTexture->width = width;
    _gpuTexture->height = height;
    _gpuTexture->size = size;
    _gpuTexture->mipLevel = _info.levelCount;
    cmdFuncGLES2ResizeTexture(GLES2Device::getInstance(), _gpuTexture);

    GLES2Device::getInstance()->framebufferHub()->update(_gpuTexture);

    if (_gpuTexture->memoryAllocated) {
        GLES2Device::getInstance()->getMemoryStatus().textureSize += size;
        CC_PROFILE_MEMORY_INC(Texture, size);
    }
}

uint32_t GLES2Texture::getGLTextureHandle() const noexcept {
    const auto *gpuTexture = _gpuTexture;
    if (!gpuTexture) {
        return 0;
    }

    if (gpuTexture->glTexture) {
        return gpuTexture->glTexture;
    }

    if (gpuTexture->glRenderbuffer) {
        return gpuTexture->glRenderbuffer;
    }

    return 0;
}

///////////////////////////// Swapchain Specific /////////////////////////////

void GLES2Texture::doInit(const SwapchainTextureInfo & /*info*/) {
    _gpuTexture = ccnew GLES2GPUTexture;
    _gpuTexture->type = _info.type;
    _gpuTexture->format = _info.format;
    _gpuTexture->usage = _info.usage;
    _gpuTexture->width = _info.width;
    _gpuTexture->height = _info.height;
    _gpuTexture->depth = _info.depth;
    _gpuTexture->arrayLayer = _info.layerCount;
    _gpuTexture->mipLevel = _info.levelCount;
    _gpuTexture->samples = _info.samples;
    _gpuTexture->flags = _info.flags;
    _gpuTexture->size = _size;
    _gpuTexture->memoryAllocated = false;
    _gpuTexture->swapchain = static_cast<GLES2Swapchain *>(_swapchain)->gpuSwapchain();
}

} // namespace gfx
} // namespace cc