mirror of https://github.com/axmolengine/axmol.git
268 lines
9.4 KiB
C++
268 lines
9.4 KiB
C++
/****************************************************************************
|
|
Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
|
|
Copyright (c) 2019-present Axmol Engine contributors (see AUTHORS.md).
|
|
|
|
https://axmolengine.github.io/
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
****************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <array>
|
|
#include "../Texture.h"
|
|
#include "platform/GL.h"
|
|
#include "base/EventListenerCustom.h"
|
|
|
|
#include "OpenGLState.h"
|
|
|
|
NS_AX_BACKEND_BEGIN
|
|
|
|
/**
|
|
* Store texture information.
|
|
*/
|
|
struct TextureInfoGL
|
|
{
|
|
void applySampler(const SamplerDescriptor& desc, bool isPow2, bool hasMipmaps, GLenum target);
|
|
void setCurrentTexParameters(GLenum target);
|
|
|
|
TextureInfoGL() { textures.fill(0); }
|
|
~TextureInfoGL() {}
|
|
|
|
template <typename _Fty>
|
|
void foreachTextures(const _Fty& cb) const
|
|
{
|
|
GLuint texID;
|
|
int idx = 0;
|
|
while ((texID = textures[idx]))
|
|
cb(texID, idx++);
|
|
}
|
|
|
|
GLuint ensure(int index, GLenum target);
|
|
void onRendererRecreated(GLenum target);
|
|
|
|
void destroy(GLenum target)
|
|
{
|
|
foreachTextures([=](GLuint texID, int) { __gl->deleteTexture(target, texID); });
|
|
textures.fill(0);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Apply shader texture
|
|
/// </summary>
|
|
/// <param name="slot">the slot in shader</param>
|
|
/// <param name="index">the index in meta textrues</param>
|
|
/// <param name="target">the target GL_TEXTURE_2D,GL_TEXTURE_CUBE_MAP</param>
|
|
void apply(int slot, int index, GLenum target) const;
|
|
GLuint getName(int index) const { return textures[0]; }
|
|
|
|
GLint magFilterGL = GL_LINEAR;
|
|
GLint minFilterGL = GL_LINEAR;
|
|
GLint sAddressModeGL = GL_REPEAT;
|
|
GLint tAddressModeGL = GL_REPEAT;
|
|
|
|
// Used in glTexImage2D().
|
|
GLint internalFormat = GL_RGBA;
|
|
GLenum format = GL_RGBA;
|
|
GLenum type = GL_UNSIGNED_BYTE;
|
|
|
|
std::array<GLuint, AX_META_TEXTURES + 1> textures;
|
|
int maxIdx = 0;
|
|
};
|
|
|
|
/**
|
|
* @addtogroup _opengl
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* A 2D texture
|
|
*/
|
|
class Texture2DGL : public backend::Texture2DBackend
|
|
{
|
|
public:
|
|
/**
|
|
* @param descirptor Specifies the texture description.
|
|
*/
|
|
Texture2DGL(const TextureDescriptor& descriptor);
|
|
~Texture2DGL();
|
|
|
|
/**
|
|
* Update a two-dimensional texture image
|
|
* @param data Specifies a pointer to the image data in memory.
|
|
* @param width Specifies the width of the texture image.
|
|
* @param height Specifies the height of the texture image.
|
|
* @param level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap
|
|
* reduction image.
|
|
*/
|
|
virtual void updateData(uint8_t* data,
|
|
std::size_t width,
|
|
std::size_t height,
|
|
std::size_t level,
|
|
int index = 0) override;
|
|
|
|
/**
|
|
* Update a two-dimensional texture image in a compressed format
|
|
* @param data Specifies a pointer to the compressed image data in memory.
|
|
* @param width Specifies the width of the texture image.
|
|
* @param height Specifies the height of the texture image.
|
|
* @param dataLen Specifies the totoal size of compressed image in bytes.
|
|
* @param level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap
|
|
* reduction image.
|
|
*/
|
|
virtual void updateCompressedData(uint8_t* data,
|
|
std::size_t width,
|
|
std::size_t height,
|
|
std::size_t dataLen,
|
|
std::size_t level,
|
|
int index = 0) override;
|
|
|
|
/**
|
|
* Update a two-dimensional texture subimage
|
|
* @param xoffset Specifies a texel offset in the x direction within the texture array.
|
|
* @param yoffset Specifies a texel offset in the y direction within the texture array.
|
|
* @param width Specifies the width of the texture subimage.
|
|
* @param height Specifies the height of the texture subimage.
|
|
* @param level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap
|
|
* reduction image.
|
|
* @param data Specifies a pointer to the image data in memory.
|
|
*/
|
|
virtual void updateSubData(std::size_t xoffset,
|
|
std::size_t yoffset,
|
|
std::size_t width,
|
|
std::size_t height,
|
|
std::size_t level,
|
|
uint8_t* data,
|
|
int index = 0) override;
|
|
|
|
/**
|
|
* Update a two-dimensional texture subimage in a compressed format
|
|
* @param xoffset Specifies a texel offset in the x direction within the texture array.
|
|
* @param yoffset Specifies a texel offset in the y direction within the texture array.
|
|
* @param width Specifies the width of the texture subimage.
|
|
* @param height Specifies the height of the texture subimage.
|
|
* @param dataLen Specifies the totoal size of compressed subimage in bytes.
|
|
* @param level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap
|
|
* reduction image.
|
|
* @param data Specifies a pointer to the compressed image data in memory.
|
|
*/
|
|
virtual void updateCompressedSubData(std::size_t xoffset,
|
|
std::size_t yoffset,
|
|
std::size_t width,
|
|
std::size_t height,
|
|
std::size_t dataLen,
|
|
std::size_t level,
|
|
uint8_t* data,
|
|
int index = 0) override;
|
|
|
|
/**
|
|
* Update sampler
|
|
* @param sampler Specifies the sampler descriptor.
|
|
*/
|
|
virtual void updateSamplerDescriptor(const SamplerDescriptor& sampler) override;
|
|
|
|
/**
|
|
* Generate mipmaps.
|
|
*/
|
|
virtual void generateMipmaps() override;
|
|
|
|
/**
|
|
* Update texture description.
|
|
* @param descriptor Specifies texture and sampler descriptor.
|
|
*/
|
|
virtual void updateTextureDescriptor(const TextureDescriptor& descriptor, int index = 0) override;
|
|
|
|
/**
|
|
* Get texture object.
|
|
* @return Texture object.
|
|
*/
|
|
uintptr_t getHandler(int index = 0) const override { return _textureInfo.textures[index]; }
|
|
|
|
/**
|
|
* Set texture to pipeline
|
|
* @param index Specifies the texture image unit selector.
|
|
*/
|
|
void apply(int slot, int index) const { _textureInfo.apply(slot, index, GL_TEXTURE_2D); }
|
|
|
|
int getCount() const override { return _textureInfo.maxIdx + 1; }
|
|
|
|
private:
|
|
void initWithZeros();
|
|
|
|
TextureInfoGL _textureInfo;
|
|
EventListener* _rendererRecreatedListener = nullptr;
|
|
};
|
|
|
|
/**
|
|
* Texture cube.
|
|
*/
|
|
class TextureCubeGL : public backend::TextureCubemapBackend
|
|
{
|
|
public:
|
|
/**
|
|
* @param descirptor Specifies the texture description.
|
|
*/
|
|
TextureCubeGL(const TextureDescriptor& descriptor);
|
|
~TextureCubeGL();
|
|
|
|
/**
|
|
* Update sampler
|
|
* @param sampler Specifies the sampler descriptor.
|
|
*/
|
|
virtual void updateSamplerDescriptor(const SamplerDescriptor& sampler) override;
|
|
|
|
/**
|
|
* Update texutre cube data in give slice side.
|
|
* @param side Specifies which slice texture of cube to be update.
|
|
* @param data Specifies a pointer to the image data in memory.
|
|
*/
|
|
virtual void updateFaceData(TextureCubeFace side, void* data, int index = 0) override;
|
|
|
|
/// Generate mipmaps.
|
|
virtual void generateMipmaps() override;
|
|
|
|
/**
|
|
* Update texture description.
|
|
* @param descriptor Specifies texture and sampler descriptor.
|
|
*/
|
|
virtual void updateTextureDescriptor(const TextureDescriptor& descriptor, int index = 0) override;
|
|
|
|
/**
|
|
* Get texture object.
|
|
* @return Texture object.
|
|
*/
|
|
uintptr_t getHandler(int index = 0) const override { return _textureInfo.textures[index]; }
|
|
|
|
/**
|
|
* Set texture to pipeline
|
|
* @param index Specifies the texture image unit selector.
|
|
*/
|
|
void apply(int slot, int index) const { _textureInfo.apply(slot, index, GL_TEXTURE_CUBE_MAP); }
|
|
|
|
int getCount() const override { return _textureInfo.maxIdx + 1; }
|
|
|
|
private:
|
|
TextureInfoGL _textureInfo;
|
|
EventListener* _rendererRecreatedListener = nullptr;
|
|
};
|
|
|
|
// end of _opengl group
|
|
/// @}
|
|
NS_AX_BACKEND_END
|