mirror of
https://github.com/love2d/love.git
synced 2026-08-16 00:02:12 +02:00
More code restructuring.
Move all love.graphics functionality that doesn’t call OpenGL out of the OpenGL backend Graphics class. --HG-- branch : minor
This commit is contained in:
Alex Szpakowski
+302
-10
@@ -30,7 +30,12 @@
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#include "vertex.h"
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#include "Color.h"
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#include "Texture.h"
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#include "Canvas.h"
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#include "Font.h"
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#include "Shader.h"
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#include "Quad.h"
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#include "math/Transform.h"
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#include "font/Rasterizer.h"
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// C++
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#include <string>
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@@ -38,6 +43,9 @@
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namespace love
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{
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class Reference;
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namespace graphics
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{
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@@ -283,12 +291,43 @@ public:
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Graphics *gfx;
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};
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typedef void (*ScreenshotCallback)(love::image::ImageData *i, Reference *ref, void *ud);
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struct ScreenshotInfo
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{
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ScreenshotCallback callback;
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Reference *ref;
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};
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Graphics();
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virtual ~Graphics();
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// Implements Module.
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virtual ModuleType getModuleType() const { return M_GRAPHICS; }
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Quad *newQuad(Quad::Viewport v, double sw, double sh);
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virtual Font *newFont(love::font::Rasterizer *data, const Texture::Filter &filter = Texture::defaultFilter) = 0;
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virtual Canvas *newCanvas(int width, int height, const Canvas::Settings &settings) = 0;
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virtual Shader *newShader(const Shader::ShaderSource &source) = 0;
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/**
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* Resets the current color, background color, line style, and so forth.
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**/
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void reset();
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virtual void clear(Colorf color) = 0;
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virtual void clear(const std::vector<OptionalColorf> &colors) = 0;
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virtual void discard(const std::vector<bool> &colorbuffers, bool depthstencil) = 0;
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/**
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* Flips buffers. (Rendered geometry is presented on screen).
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**/
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virtual void present(void *screenshotCallbackData) = 0;
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/**
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* Sets the current graphics display viewport dimensions.
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**/
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@@ -319,25 +358,190 @@ public:
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* Normally the module will always be active as long as a window exists, it
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* may be different on some platforms (especially mobile ones.)
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**/
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virtual bool isActive() const = 0;
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bool isActive() const;
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virtual int getWidth() const = 0;
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virtual int getHeight() const = 0;
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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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virtual bool isCanvasActive() const = 0;
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int getWidth() const;
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int getHeight() const;
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int getPixelWidth() const;
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int getPixelHeight() const;
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virtual void flushStreamDraws() = 0;
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StreamVertexData requestStreamDraw(const StreamDrawRequest &request);
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double getCurrentPixelDensity() const;
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double getScreenPixelDensity() const;
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virtual Colorf getColor() const = 0;
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/**
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* Sets the current constant color.
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**/
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virtual void setColor(Colorf c) = 0;
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virtual float getLineWidth() const = 0;
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virtual LineStyle getLineStyle() const = 0;
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virtual LineJoin getLineJoin() const = 0;
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/**
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* Gets current color.
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**/
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Colorf getColor() const;
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/**
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* Sets the background Color.
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**/
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void setBackgroundColor(Colorf c);
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/**
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* Gets the current background color.
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**/
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Colorf getBackgroundColor() const;
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void setFont(Font *font);
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Font *getFont();
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void setShader(Shader *shader);
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void setShader();
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Shader *getShader() const;
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void setCanvas(Canvas *canvas);
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virtual void setCanvas(const std::vector<Canvas *> &canvases) = 0;
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void setCanvas(const std::vector<StrongRef<Canvas>> &canvases);
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virtual void setCanvas() = 0;
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std::vector<Canvas *> getCanvas() const;
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bool isCanvasActive() const;
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bool isCanvasActive(Canvas *canvas) const;
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/**
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* Scissor defines a box such that everything outside that box is discarded
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* and not drawn. Scissoring is automatically enabled.
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* @param rect The rectangle defining the scissor area.
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**/
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virtual void setScissor(const Rect &rect) = 0;
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void intersectScissor(const Rect &rect);
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/**
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* Clears any scissor that has been created.
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**/
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virtual void setScissor() = 0;
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/**
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* Gets the current scissor box.
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* @return Whether the scissor is enabled.
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*/
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bool getScissor(Rect &rect) const;
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/**
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* Enables or disables drawing to the stencil buffer. When enabled, the
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* color buffer is disabled.
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**/
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virtual void drawToStencilBuffer(StencilAction action, int value) = 0;
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virtual void stopDrawToStencilBuffer() = 0;
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/**
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* Sets whether stencil testing is enabled.
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**/
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virtual void setStencilTest(CompareMode compare, int value) = 0;
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virtual void setStencilTest() = 0;
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void getStencilTest(CompareMode &compare, int &value);
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/**
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* Clear the stencil buffer in the active Canvas(es.)
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**/
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virtual void clearStencil() = 0;
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/**
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* Sets the enabled color components when rendering.
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**/
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virtual void setColorMask(ColorMask mask) = 0;
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/**
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* Gets the current color mask.
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**/
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ColorMask getColorMask() const;
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/**
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* Sets the current blend mode.
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**/
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virtual void setBlendMode(BlendMode mode, BlendAlpha alphamode) = 0;
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/**
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* Gets the current blend mode.
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**/
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BlendMode getBlendMode(BlendAlpha &alphamode) 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 Texture::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 Texture::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(Texture::FilterMode filter, float sharpness);
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void getDefaultMipmapFilter(Texture::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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float getLineWidth() const;
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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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LineStyle getLineStyle() const;
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/**
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* Sets the line join mode.
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**/
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void setLineJoin(LineJoin style);
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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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virtual void setPointSize(float size) = 0;
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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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* Sets whether graphics will be drawn as wireframe lines instead of filled
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* triangles (has no effect for drawn points.)
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* This should only be used as a debugging tool. The wireframe lines do not
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* behave the same as regular love.graphics lines.
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**/
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virtual void setWireframe(bool enable) = 0;
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/**
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* Gets whether wireframe drawing mode is enabled.
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**/
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bool isWireframe() const;
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void captureScreenshot(const ScreenshotInfo &info);
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void draw(Drawable *drawable, const Matrix4 &m);
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void draw(Texture *texture, Quad *quad, const Matrix4 &m);
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/**
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* Draws text at the specified coordinates
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**/
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void print(const std::vector<Font::ColoredString> &str, const Matrix4 &m);
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/**
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* Draws formatted text on screen at the specified coordinates.
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**/
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void printf(const std::vector<Font::ColoredString> &str, float wrap, Font::AlignMode align, const Matrix4 &m);
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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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@@ -420,11 +624,31 @@ public:
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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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* Gets whether a graphics feature is supported on this system.
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**/
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virtual bool isSupported(Feature feature) const = 0;
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/**
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* Gets the system-dependent numeric limit for the specified parameter.
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**/
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virtual double getSystemLimit(SystemLimit limittype) const = 0;
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/**
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* Returns system-dependent renderer information.
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* Returned strings can vary greatly between systems! Do not rely on it for
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* anything!
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**/
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virtual RendererInfo getRendererInfo() const = 0;
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/**
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* Returns performance-related statistics.
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**/
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virtual Stats getStats() const = 0;
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void push(StackType type = STACK_TRANSFORM);
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void pop();
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const Matrix4 &getTransform() const;
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const Matrix4 &getProjection() const;
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@@ -440,6 +664,9 @@ public:
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Vector transformPoint(Vector point);
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Vector inverseTransformPoint(Vector point);
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virtual void flushStreamDraws() = 0;
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StreamVertexData requestStreamDraw(const StreamDrawRequest &request);
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template <typename T>
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T *getScratchBuffer(size_t count)
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{
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@@ -484,8 +711,48 @@ public:
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static bool getConstant(const char *in, StackType &out);
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static bool getConstant(StackType in, const char *&out);
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// Default shader code (a shader is always required internally.)
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static Shader::ShaderSource defaultShaderCode[RENDERER_MAX_ENUM][2];
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static Shader::ShaderSource defaultVideoShaderCode[RENDERER_MAX_ENUM][2];
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protected:
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struct DisplayState
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{
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Colorf color = Colorf(1.0, 1.0, 1.0, 1.0);
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Colorf gammaCorrectedColor = Colorf(1.0f, 1.0f, 1.0f, 1.0f);
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Colorf backgroundColor = Colorf(0.0, 0.0, 0.0, 1.0);
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BlendMode blendMode = BLEND_ALPHA;
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BlendAlpha blendAlphaMode = BLENDALPHA_MULTIPLY;
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float lineWidth = 1.0f;
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LineStyle lineStyle = LINE_SMOOTH;
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LineJoin lineJoin = LINE_JOIN_MITER;
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float pointSize = 1.0f;
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bool scissor = false;
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Rect scissorRect = Rect();
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CompareMode stencilCompare = COMPARE_ALWAYS;
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int stencilTestValue = 0;
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StrongRef<Font> font;
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StrongRef<Shader> shader;
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std::vector<StrongRef<Canvas>> canvases;
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ColorMask colorMask = ColorMask(true, true, true, true);
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bool wireframe = false;
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Texture::Filter defaultFilter = Texture::Filter();
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Texture::FilterMode defaultMipmapFilter = Texture::FILTER_NEAREST;
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float defaultMipmapSharpness = 0.0f;
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};
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struct StreamBufferState
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{
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StreamBuffer *vb[2];
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@@ -498,10 +765,27 @@ protected:
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int indexCount;
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};
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void restoreState(const DisplayState &s);
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void restoreStateChecked(const DisplayState &s);
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void pushTransform();
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void pushIdentityTransform();
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void popTransform();
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int width;
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int height;
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int pixelWidth;
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int pixelHeight;
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bool created;
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bool active;
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bool writingToStencil;
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StrongRef<love::graphics::Font> defaultFont;
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std::vector<ScreenshotInfo> pendingScreenshotCallbacks;
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StreamBufferState streamBufferState;
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std::vector<Matrix4> transformStack;
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@@ -509,8 +793,16 @@ protected:
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std::vector<double> pixelScaleStack;
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std::vector<DisplayState> states;
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std::vector<StackType> stackTypeStack;
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int canvasSwitchCount;
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static const size_t MAX_USER_STACK_DEPTH = 64;
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private:
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void checkSetDefaultFont();
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int calculateEllipsePoints(float rx, float ry) const;
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std::vector<uint8> scratchBuffer;
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