mirror of
https://github.com/love2d/love.git
synced 2026-08-16 08:11:02 +02:00
Alex Szpakowski
137 lines
3.4 KiB
C++
137 lines
3.4 KiB
C++
/**
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* Copyright (c) 2006-2014 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#ifndef LOVE_GRAPHICS_OPENGL_CANVAS_H
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#define LOVE_GRAPHICS_OPENGL_CANVAS_H
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#include "graphics/Color.h"
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#include "image/Image.h"
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#include "image/ImageData.h"
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#include "common/Matrix.h"
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#include "Texture.h"
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#include "OpenGL.h"
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namespace love
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{
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namespace graphics
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{
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namespace opengl
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{
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class Canvas : public Texture
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{
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public:
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enum TextureType
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{
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TYPE_NORMAL,
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TYPE_HDR,
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TYPE_MAX_ENUM
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};
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Canvas(int width, int height, TextureType texture_type = TYPE_NORMAL);
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virtual ~Canvas();
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// Implements Volatile.
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virtual bool loadVolatile();
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virtual void unloadVolatile();
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// Implements Drawable.
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virtual void draw(float x, float y, float angle, float sx, float sy, float ox, float oy, float kx, float ky) const;
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// Implements Texture.
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virtual void drawq(Quad *quad, float x, float y, float angle, float sx, float sy, float ox, float oy, float kx, float ky) const;
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virtual void setFilter(const Texture::Filter &f);
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virtual void setWrap(const Texture::Wrap &w);
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virtual GLuint getGLTexture() const;
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virtual void predraw() const;
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/**
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* @param canvases A list of other canvases to temporarily attach to this one,
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* to allow drawing to multiple canvases at once.
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**/
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void startGrab(const std::vector<Canvas *> &canvases);
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void startGrab();
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void stopGrab();
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void clear(Color c);
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/**
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* Create and attach a stencil buffer to this Canvas' framebuffer, if necessary.
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**/
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bool checkCreateStencil();
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love::image::ImageData *getImageData(love::image::Image *image);
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void getPixel(unsigned char* pixel_rgba, int x, int y);
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inline const std::vector<Canvas *> &getAttachedCanvases() const
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{
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return attachedCanvases;
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}
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inline GLenum getStatus() const
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{
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return status;
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}
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inline TextureType getTextureType() const
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{
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return texture_type;
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}
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static bool isSupported();
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static bool isHDRSupported();
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static bool isMultiCanvasSupported();
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static bool getConstant(const char *in, TextureType &out);
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static bool getConstant(TextureType in, const char *&out);
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static Canvas *current;
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static void bindDefaultCanvas();
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// The viewport dimensions of the system (default) framebuffer.
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static OpenGL::Viewport systemViewport;
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private:
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GLuint fbo;
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GLuint texture;
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GLuint depth_stencil;
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TextureType texture_type;
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GLenum status;
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std::vector<Canvas *> attachedCanvases;
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void setupGrab();
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void drawv(const Matrix &t, const Vertex *v) const;
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static StringMap<TextureType, TYPE_MAX_ENUM>::Entry textureTypeEntries[];
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static StringMap<TextureType, TYPE_MAX_ENUM> textureTypes;
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};
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} // opengl
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} // graphics
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} // love
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#endif // LOVE_GRAPHICS_OPENGL_CANVAS_H
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