#include <SDLFix.hpp>

Static Public Member Functions
static void	CorrectBlendMode (SDL_Renderer *renderer)

static void	FixRenderer (SDL_Renderer *renderer)

static void	MarkApiTrace (SDL_Renderer *renderer, int no)

static void	PremultiplySurface32RGBA (SDL_Surface *surf)

static void	RenderDrawLines (SDL_Renderer renderer, const SDL_FPoint points, int count)

static void	RendererMakeCurrent (SDL_Renderer *renderer)

static void	RenderSetLineSmoothing (SDL_Renderer *renderer, bool enabled)

static void	RenderSetLineWidth (SDL_Renderer *renderer, float w)

Detailed Description

This class provides sevaral fixes and workarounds for flaws within SDL.

Member Function Documentation

static void AlgAudio::SDLFix::CorrectBlendMode ( SDL_Renderer * renderer )

static

This function corrects the renderers internal blendmode state. The internal formulas SDL uses are wrong, incorrect, ugly, and do not support premultiplied alpha. Call this function on your renderer after calling SetBlendMode(BLENDMODE_BLEND), and make sure your textures use an invalid blendmode, otherwise SDL will reset

static void AlgAudio::SDLFix::FixRenderer ( SDL_Renderer * renderer )

static

This function substitutes several method pointers inside the renderer, so that fixed (or modified) versions of several rendering functions are used whenever SDL calls any of these methods on the renderer. It also checks whether the renderer is opengl. Generally, call this function on any fresh created renderer.

static void AlgAudio::SDLFix::MarkApiTrace	(	SDL_Renderer *	renderer,
		int	no
	)

static

static void AlgAudio::SDLFix::PremultiplySurface32RGBA ( SDL_Surface * surf )

static

Mutliplies all pixel colors in a surface by alpha.

static void AlgAudio::SDLFix::RenderDrawLines	(	SDL_Renderer *	renderer,
		const SDL_FPoint *	points,
		int	count
	)

static

Similar to SDL_RenderDrawLines, but acccepts SDL_FPoints instead of SDL_Points.

static void AlgAudio::SDLFix::RendererMakeCurrent ( SDL_Renderer * renderer )

static

Some SDL calls forget to make renderer's contex current, for example internal SDL_RenderSetCLipRect suffers from this problem. This function is a helpful workaround, it forces SDL to call GL_ActivateRenderer(renderer) and nothing else.

static void AlgAudio::SDLFix::RenderSetLineSmoothing	(	SDL_Renderer *	renderer,
		bool	enabled
	)

static

Calls glEnable( GL_LINE_SMOOTH ).

static void AlgAudio::SDLFix::RenderSetLineWidth	(	SDL_Renderer *	renderer,
		float	w
	)

static

Sets GL line width.

The documentation for this class was generated from the following file:

E:/rc/algaudio/libalgaudio/SDLFix/SDLFix.hpp

Static Public Member Functions

Detailed Description

Member Function Documentation