Function createTexture2D

3rdparty/bgfx/src/bgfx.cpp:4928–4978

	}

	static TextureHandle createTexture2D(BackbufferRatio::Enum _ratio, uint16_t _width, uint16_t _height, bool _hasMips, uint16_t _numLayers, TextureFormat::Enum _format, uint64_t _flags, const Memory* _mem)
	{
		if (BackbufferRatio::Count != _ratio)
		{
			_width  = uint16_t(s_ctx->m_init.resolution.width);
			_height = uint16_t(s_ctx->m_init.resolution.height);
			getTextureSizeFromRatio(_ratio, _width, _height);
		}

		bx::ErrorAssert err;
		isTextureValid(_width, _height, 0, false, _numLayers, _format, _flags, &err);

		if (!err.isOk() )
		{
			return BGFX_INVALID_HANDLE;
		}

		const uint8_t numMips = calcNumMips(_hasMips, _width, _height);
		_numLayers = bx::max<uint16_t>(_numLayers, 1);

		if (BX_ENABLED(BGFX_CONFIG_DEBUG)
		&&  NULL != _mem)
		{
			TextureInfo ti;
			calcTextureSize(ti, _width, _height, 1, false, _hasMips, _numLayers, _format);
			BX_ASSERT(ti.storageSize == _mem->size
				, "createTexture2D: Texture storage size doesn't match passed memory size (storage size: %d, memory size: %d)"
				, ti.storageSize
				, _mem->size
				);
		}

		uint32_t size = sizeof(uint32_t)+sizeof(TextureCreate);
		const Memory* mem = alloc(size);

		bx::StaticMemoryBlockWriter writer(mem->data, mem->size);
		bx::write(&writer, kChunkMagicTex, bx::ErrorAssert{});

		TextureCreate tc;
		tc.m_width     = _width;
		tc.m_height    = _height;
		tc.m_depth     = 0;
		tc.m_numLayers = _numLayers;
		tc.m_numMips   = numMips;
		tc.m_format    = _format;
		tc.m_cubeMap   = false;
		tc.m_mem       = _mem;
		bx::write(&writer, tc, bx::ErrorAssert{});

		return s_ctx->createTexture(mem, _flags, 0, NULL, _ratio, NULL != _mem);
	}

	TextureHandle createTexture2D(uint16_t _width, uint16_t _height, bool _hasMips, uint16_t _numLayers, TextureFormat::Enum _format, uint64_t _flags, const Memory* _mem)
	{