cocos_lib/cocos/renderer/gfx-gles3/GLES3Texture.cpp

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

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#include "GLES3Std.h"

#include "GLES3Commands.h"
#include "GLES3Device.h"
#include "GLES3Swapchain.h"
#include "GLES3Texture.h"
#include "base/Macros.h"
#include "profiler/Profiler.h"

namespace cc {
namespace gfx {

GLES3Texture::GLES3Texture() {
    _typedID = generateObjectID<decltype(this)>();
}

GLES3Texture::~GLES3Texture() {
    destroy();
}

void GLES3Texture::doInit(const TextureInfo & /*info*/) {
    _gpuTexture = ccnew GLES3GPUTexture;
    _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->glSamples = static_cast<GLint>(_info.samples);
    _gpuTexture->flags = _info.flags;
    _gpuTexture->size = _size;
    _gpuTexture->isPowerOf2 = math::isPowerOfTwo(_info.width) && math::isPowerOfTwo(_info.height);

    bool hasExternalFlag = hasFlag(_gpuTexture->flags, TextureFlagBit::EXTERNAL_NORMAL) ||
                           hasFlag(_gpuTexture->flags, TextureFlagBit::EXTERNAL_OES);
    if (_info.externalRes && !hasExternalFlag) {
        // compatibility
        _gpuTexture->flags = _gpuTexture->flags | TextureFlagBit::EXTERNAL_OES;
        hasExternalFlag = true;
    }

    if (hasExternalFlag) {
        _gpuTexture->glTexture = static_cast<GLuint>(reinterpret_cast<size_t>(_info.externalRes));
    }

    cmdFuncGLES3CreateTexture(GLES3Device::getInstance(), _gpuTexture);

    if (_gpuTexture->memoryAllocated) {
        GLES3Device::getInstance()->getMemoryStatus().textureSize += _size;
        CC_PROFILE_MEMORY_INC(Texture, _size);
    }

    _gpuTextureView = ccnew GLES3GPUTextureView;
    createTextureView();
}

void GLES3Texture::doInit(const TextureViewInfo & /*info*/) {
    _gpuTexture = static_cast<GLES3Texture *>(_viewInfo.texture)->gpuTexture();

    CC_ASSERT(_viewInfo.texture->getFormat() == _viewInfo.format);

    _gpuTextureView = ccnew GLES3GPUTextureView;
    createTextureView();
}

void GLES3Texture::createTextureView() {
    _gpuTextureView->gpuTexture = _gpuTexture;
    _gpuTextureView->type = _viewInfo.type;
    _gpuTextureView->format = _viewInfo.format;
    _gpuTextureView->baseLevel = _viewInfo.baseLevel;
    _gpuTextureView->levelCount = _viewInfo.levelCount;
    _gpuTextureView->baseLayer = _viewInfo.baseLayer;
    _gpuTextureView->layerCount = _viewInfo.layerCount;
    _gpuTextureView->basePlane = _viewInfo.basePlane;
    _gpuTextureView->planeCount = _viewInfo.planeCount;
    cmdFuncGLES3CreateTextureView(GLES3Device::getInstance(), _gpuTextureView);

}

void GLES3Texture::doDestroy() {
    CC_SAFE_DELETE(_gpuTextureView);
    if (_gpuTexture) {
        if (!_isTextureView) {
            if (_gpuTexture->memoryAllocated) {
                GLES3Device::getInstance()->getMemoryStatus().textureSize -= _size;
                CC_PROFILE_MEMORY_DEC(Texture, _size);
            }

            cmdFuncGLES3DestroyTexture(GLES3Device::getInstance(), _gpuTexture);
            GLES3Device::getInstance()->framebufferHub()->disengage(_gpuTexture);
            delete _gpuTexture;
        }
        _gpuTexture = nullptr;
    }
}

void GLES3Texture::doResize(uint32_t width, uint32_t height, uint32_t size) {
    if (!_isTextureView && _gpuTexture->memoryAllocated) {
        GLES3Device::getInstance()->getMemoryStatus().textureSize -= _size;
        CC_PROFILE_MEMORY_DEC(Texture, _size);
    }

    _gpuTexture->width = width;
    _gpuTexture->height = height;
    _gpuTexture->size = size;
    _gpuTexture->mipLevel = _info.levelCount;

    cmdFuncGLES3ResizeTexture(GLES3Device::getInstance(), _gpuTexture);

    GLES3Device::getInstance()->framebufferHub()->update(_gpuTexture);

    if (!_isTextureView && _gpuTexture->memoryAllocated) {
        GLES3Device::getInstance()->getMemoryStatus().textureSize += size;
        CC_PROFILE_MEMORY_INC(Texture, size);
    }
}

uint32_t GLES3Texture::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 GLES3Texture::doInit(const SwapchainTextureInfo & /*info*/) {
    _gpuTexture = ccnew GLES3GPUTexture;
    _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->glSamples = static_cast<GLint>(_info.samples);
    _gpuTexture->flags = _info.flags;
    _gpuTexture->size = _size;
    _gpuTexture->memoryAllocated = false;
    _gpuTexture->swapchain = static_cast<GLES3Swapchain *>(_swapchain)->gpuSwapchain();
    _gpuTextureView = ccnew GLES3GPUTextureView;
    createTextureView();
}

} // namespace gfx
} // namespace cc