mirror of
https://github.com/love2d/love-android.git
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imported Löve GLES branch (changeset 1ba9037e558b)
This commit is contained in:
Martin Felis
@@ -0,0 +1,479 @@
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/**
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* Copyright (c) 2006-2013 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_GRAPHICS_H
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#define LOVE_GRAPHICS_OPENGL_GRAPHICS_H
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// STD
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#include <iostream>
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#include <stack>
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#include <vector>
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// OpenGL
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#include "OpenGL.h"
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// LOVE
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#include "graphics/Graphics.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 "window/Window.h"
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#include "Font.h"
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#include "Image.h"
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#include "graphics/Quad.h"
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#include "SpriteBatch.h"
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#include "ParticleSystem.h"
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#include "Canvas.h"
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#include "Shader.h"
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#include "Mesh.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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// During display mode changing, certain
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// variables about the OpenGL context are
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// lost.
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struct DisplayState
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{
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// Colors.
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Color color;
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Color backgroundColor;
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// Blend mode.
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Graphics::BlendMode blendMode;
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// Line.
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Graphics::LineStyle lineStyle;
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Graphics::LineJoin lineJoin;
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// Point.
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float pointSize;
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Graphics::PointStyle pointStyle;
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// Scissor.
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bool scissor;
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OpenGL::Viewport scissorBox;
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// Color mask.
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bool colorMask[4];
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// Default values.
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DisplayState()
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{
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color.set(255,255,255,255);
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backgroundColor.set(0, 0, 0, 255);
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blendMode = Graphics::BLEND_ALPHA;
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lineStyle = Graphics::LINE_SMOOTH;
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lineJoin = Graphics::LINE_JOIN_MITER;
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pointSize = 1.0f;
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pointStyle = Graphics::POINT_SMOOTH;
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scissor = false;
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colorMask[0] = colorMask[1] = colorMask[2] = colorMask[3] = true;
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}
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};
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class Graphics : public love::graphics::Graphics
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{
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public:
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Graphics();
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virtual ~Graphics();
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// Implements Module.
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const char *getName() const;
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DisplayState saveState();
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void restoreState(const DisplayState &s);
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virtual void setViewportSize(int width, int height);
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virtual bool setMode(int width, int height);
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virtual void unSetMode();
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/**
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* Resets the current color, background color,
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* line style, and so forth. (This will be called
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* when the game reloads.
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**/
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void reset();
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/**
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* Clears the screen.
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**/
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void clear();
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/**
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* Flips buffers. (Rendered geometry is presented on screen).
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**/
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void present();
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/**
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* Gets the width of the current graphics viewport.
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**/
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int getWidth() const;
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/**
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* Gets the height of the current graphics viewport.
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**/
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int getHeight() const;
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/**
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* True if a graphics viewport is set.
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**/
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bool isCreated() const;
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/**
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* Scissor defines a box such that everything outside that box is discarded and not drawn.
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* Scissoring is automatically enabled.
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* @param x The x-coordinate of the top-left corner.
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* @param y The y-coordinate of the top-left corner.
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* @param width The width of the box.
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* @param height The height of the box.
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**/
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void setScissor(int x, int y, int width, int height);
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/**
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* Clears any scissor that has been created.
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**/
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void setScissor();
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/**
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* This native Lua function gets the current scissor box in the order of:
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* x, y, width, height
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**/
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int getScissor(lua_State *L) const;
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/**
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* Enables the stencil buffer and set stencil function to fill it
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*/
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void defineStencil();
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/**
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* Set stencil function to mask the following drawing calls using
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* the current stencil buffer
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* @param invert Invert the mask, i.e. draw everywhere expect where
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* the mask is defined.
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*/
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void useStencil(bool invert = false);
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/**
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* Disables the stencil buffer
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*/
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void discardStencil();
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/**
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* Gets the maximum supported width or height of Images and Canvases on this
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* system.
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**/
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int getMaxImageSize() const;
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/**
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* Creates an Image object with padding and/or optimization.
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**/
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Image *newImage(love::image::ImageData *data);
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Image *newImage(love::image::CompressedData *cdata);
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Quad *newQuad(Quad::Viewport v, float sw, float sh);
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/**
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* Creates a Font object.
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**/
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Font *newFont(love::font::Rasterizer *data, const Image::Filter &filter = Image::Filter());
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SpriteBatch *newSpriteBatch(Image *image, int size, int usage);
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ParticleSystem *newParticleSystem(Image *image, int size);
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Canvas *newCanvas(int width, int height, Canvas::TextureType texture_type = Canvas::TYPE_NORMAL);
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Shader *newShader(const Shader::ShaderSources &sources);
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Mesh *newMesh(const std::vector<Vertex> &vertices, Mesh::DrawMode mode = Mesh::DRAW_MODE_FAN);
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/**
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* Sets the foreground color.
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* @param c The new foreground color.
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**/
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void setColor(const Color &c);
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/**
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* Gets current color.
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**/
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Color getColor() const;
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/**
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* Sets the background Color.
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**/
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void setBackgroundColor(const Color &c);
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/**
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* Gets the current background color.
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**/
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Color getBackgroundColor() const;
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/**
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* Sets the current font.
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* @param font A Font object.
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**/
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void setFont(Font *font);
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/**
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* Gets the current Font, or nil if none.
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**/
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Font *getFont() const;
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/**
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* Sets the enabled color components when rendering.
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**/
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void setColorMask(bool r, bool g, bool b, bool a);
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/**
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* Gets the current color mask.
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* Returns an array of 4 booleans representing the mask.
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**/
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const bool *getColorMask() const;
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/**
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* Sets the current blend mode.
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**/
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void setBlendMode(BlendMode mode);
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/**
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* Gets the current blend mode.
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**/
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BlendMode getBlendMode() const;
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/**
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* Sets the default filter for images, canvases, and fonts.
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**/
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void setDefaultFilter(const Image::Filter &f);
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/**
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* Gets the default filter for images, canvases, and fonts.
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**/
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const Image::Filter &getDefaultFilter() const;
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/**
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* Default Image mipmap filter mode and sharpness values.
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**/
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void setDefaultMipmapFilter(Image::FilterMode filter, float sharpness);
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void getDefaultMipmapFilter(Image::FilterMode *filter, float *sharpness) const;
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/**
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* Sets the line width.
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* @param width The new width of the line.
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**/
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void setLineWidth(float width);
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/**
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* Sets the line style.
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* @param style LINE_ROUGH or LINE_SMOOTH.
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**/
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void setLineStyle(LineStyle style);
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/**
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* Sets the line style.
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* @param style LINE_ROUGH or LINE_SMOOTH.
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**/
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void setLineJoin(LineJoin style);
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/**
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* Gets the line width.
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**/
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float getLineWidth() const;
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/**
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* Gets the line style.
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**/
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LineStyle getLineStyle() const;
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/**
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* Gets the line style.
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**/
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LineJoin getLineJoin() const;
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/**
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* Sets the size of points.
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**/
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void setPointSize(float size);
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/**
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* Sets the style of points.
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* @param style POINT_SMOOTH or POINT_ROUGH.
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**/
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void setPointStyle(PointStyle style);
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/**
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* Gets the point size.
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**/
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float getPointSize() const;
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/**
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* Gets the point style.
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**/
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PointStyle getPointStyle() const;
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/**
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* Gets the maximum point size supported.
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* This may vary from computer to computer.
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**/
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int getMaxPointSize() const;
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/**
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* Draws text at the specified coordinates, with rotation and
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* scaling along both axes.
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* @param x The x-coordinate.
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* @param y The y-coordinate.
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* @param angle The amount of rotation.
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* @param sx The scale factor along the x-axis. (1 = normal).
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* @param sy The scale factor along the y-axis. (1 = normal).
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* @param ox The origin offset along the x-axis.
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* @param oy The origin offset along the y-axis.
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* @param kx Shear along the x-axis.
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* @param ky Shear along the y-axis.
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**/
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void print(const std::string &str, float x, float y, float angle, float sx, float sy, float ox, float oy, float kx, float ky);
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/**
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* Draw formatted text on screen at the specified coordinates.
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*
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* @param str A string of text.
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* @param x The x-coordinate.
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* @param y The y-coordinate.
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* @param wrap The maximum width of the text area.
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* @param align Where to align the text.
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* @param angle The amount of rotation.
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* @param sx The scale factor along the x-axis. (1 = normal).
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* @param sy The scale factor along the y-axis. (1 = normal).
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* @param ox The origin offset along the x-axis.
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* @param oy The origin offset along the y-axis.
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* @param kx Shear along the x-axis.
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* @param ky Shear along the y-axis.
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**/
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void printf(const std::string &str, float x, float y, float wrap, AlignMode align, float angle, float sx, float sy, float ox, float oy, float kx, float ky);
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/**
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* Draws a point at (x,y).
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* @param x Point along x-axis.
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* @param y Point along y-axis.
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**/
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void point(float x, float y);
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/**
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* Draws a series of lines connecting the given vertices.
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* @param coords Vertex components (x1, y1, ..., xn, yn). If x1,y1 == xn,yn the line will be drawn closed.
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* @param count Number of items in the array, i.e. count = 2 * n
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**/
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void polyline(const float *coords, size_t count);
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/**
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* Draws a rectangle.
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* @param x Position along x-axis for top-left corner.
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* @param y Position along y-axis for top-left corner.
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* @param w The width of the rectangle.
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* @param h The height of the rectangle.
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**/
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void rectangle(DrawMode mode, float x, float y, float w, float h);
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/**
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* Draws a circle using the specified arguments.
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* @param mode The mode of drawing (line/filled).
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* @param x X-coordinate.
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* @param y Y-coordinate.
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* @param radius Radius of the circle.
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* @param points Number of points to use to draw the circle.
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**/
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void circle(DrawMode mode, float x, float y, float radius, int points = 10);
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/**
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* Draws an arc using the specified arguments.
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* @param mode The mode of drawing (line/filled).
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* @param x X-coordinate.
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* @param y Y-coordinate.
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* @param radius Radius of the arc.
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* @param angle1 The angle at which the arc begins.
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* @param angle2 The angle at which the arc terminates.
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* @param points Number of points to use to draw the arc.
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**/
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void arc(DrawMode mode, float x, float y, float radius, float angle1, float angle2, int points = 10);
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/**
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* Draws a polygon with an arbitrary number of vertices.
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* @param mode The type of drawing (line/filled).
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* @param coords Vertex components (x1, y1, x2, y2, etc.)
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* @param count Coord array size
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**/
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void polygon(DrawMode mode, const float *coords, size_t count);
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/**
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* Creates a screenshot of the view and saves it to the default folder.
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* @param image The love.image module.
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* @param copyAlpha If the alpha channel should be copied or set to full opacity (255).
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**/
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love::image::ImageData *newScreenshot(love::image::Image *image, bool copyAlpha = true);
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/**
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* Returns a string containing system-dependent renderer information.
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* Returned string can vary greatly between systems! Do not rely on it for
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* anything!
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* @param infotype The type of information to return.
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**/
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std::string getRendererInfo(Graphics::RendererInfo infotype) const;
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void push();
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void pop();
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void rotate(float r);
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void scale(float x, float y = 1.0f);
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void translate(float x, float y);
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void shear(float kx, float ky);
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void origin();
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private:
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Font *currentFont;
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love::window::Window *currentWindow;
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std::vector<double> pixel_size_stack; // stores current size of a pixel (needed for line drawing)
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LineStyle lineStyle;
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LineJoin lineJoin;
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float lineWidth;
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size_t matrixLimit;
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bool colorMask[4];
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int width;
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int height;
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bool created;
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DisplayState savedState;
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}; // Graphics
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} // opengl
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} // graphics
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} // love
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||||
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#endif // LOVE_GRAPHICS_OPENGL_GRAPHICS_H
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Reference in New Issue
Block a user