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Test Case to demonstrate black screen on resume.

testcase.c (text/x-csrc), 5.02 KB, created by Richard Russell on 2016-04-02 10:23:36 UTC

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Description:

Filename:

MIME Type:

Creator: Richard Russell

Created: 2016-04-02 10:23:36 UTC

Size: 5.02 KB

patch

obsolete

>/******************************************************************\
>* Testcase to demonstrate problem with SDL 2.0.4 on Android GLES 1 *
>\******************************************************************/
>
>#include <stdlib.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <math.h>
>#include "SDL2/SDL.h"
>
>#define GL_COLOR_LOGIC_OP 0x0BF2
>#define GL_XOR 0x1506
>#define SCREEN_WIDTH  640
>#define SCREEN_HEIGHT 500
>#define IDLE 2
>#define PACER 20
>
>void (*glEnable)  (int) ;
>void (*glLogicOp) (int) ;
>void (*glDisable) (int) ;
>
>static int bkgnd = 0 ;
>
>int myEventFilter(void* userdata, SDL_Event* pev)
>{
>	switch (pev->type)
>	{
>		case SDL_APP_WILLENTERBACKGROUND:
>		bkgnd = 1 ;
>		break ;
>
>		case SDL_APP_WILLENTERFOREGROUND:
>		bkgnd = 0 ;
>		break ;
>	}
>	return 0 ;
>}
>
>int main(int argc, char* argv[])
>{
>int running = 1 ;
>int sizex, sizey ;
>SDL_Event ev ;
>SDL_Window *myWindow ;
>SDL_Renderer *myRenderer ;
>SDL_Rect myRect ;
>
>if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER | 
>		SDL_INIT_EVENTS | SDL_INIT_JOYSTICK) != 0)
>{
>	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>		"Testcase", SDL_GetError(), NULL) ;
>	return 1;
>}
>
>#ifdef __ANDROID__
>	SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles") ;
>	SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear") ;
>#else
>	SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl") ;
>	SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear") ;
>#endif
>
>myWindow = SDL_CreateWindow("BBCSDL",  SDL_WINDOWPOS_CENTERED,  SDL_WINDOWPOS_CENTERED, 
>		SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE) ;
>if (myWindow == NULL)
>{
>	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>		"Testcase", SDL_GetError(), NULL) ;
>	SDL_Quit() ;
>	return 5;
>}
>
>SDL_GetWindowSize(myWindow, &sizex, &sizey) ; // Window may not be the requested size
>
>myRenderer = SDL_CreateRenderer(myWindow, -1, SDL_RENDERER_ACCELERATED |SDL_RENDERER_PRESENTVSYNC) ;
>if (myRenderer == NULL)
>{
>	SDL_DestroyWindow(myWindow) ;
>	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>		"Testcase", SDL_GetError(), NULL) ;
>	SDL_Quit() ;
>	return 6;
>}
>
>if (!SDL_RenderTargetSupported(myRenderer))
>{
>	SDL_DestroyWindow(myWindow) ;
>	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>		"Testcase", "Render targets not supported", NULL) ;
>	SDL_Quit() ;
>	return 7;
>}
>
>SDL_SetRenderTarget(myRenderer, SDL_CreateTexture(myRenderer, SDL_PIXELFORMAT_ARGB8888, 
>				SDL_TEXTUREACCESS_TARGET, sizex, sizey)) ;
>
>#ifdef __ANDROID__
>	glLogicOp = (void *) dlsym (-1, "glLogicOp") ;
>	glEnable  = (void *) dlsym (-1, "glEnable") ;
>	glDisable = (void *) dlsym (-1, "glDisable") ;
>#else
>	glLogicOp = SDL_GL_GetProcAddress("glLogicOp") ;
>	glEnable  = SDL_GL_GetProcAddress("glEnable") ;
>	glDisable = SDL_GL_GetProcAddress("glDisable") ;
>#endif
>
>glEnable(GL_COLOR_LOGIC_OP) ;
>glLogicOp(GL_XOR) ;
>SDL_SetRenderDrawColor(myRenderer, 0, 0, 255, 255) ;
>SDL_RenderFillRect(myRenderer, NULL) ;
>myRect.x = 0 ;
>myRect.y = 0 ;
>myRect.w = sizex / 2 ;
>myRect.h = sizey ;
>SDL_SetRenderDrawColor(myRenderer, 255, 0, 255, 255) ;
>SDL_RenderFillRect(myRenderer, &myRect) ;
>myRect.x = 0 ;
>myRect.y = 0 ;
>myRect.w = sizex ;
>myRect.h = sizey / 2 ;
>SDL_SetRenderDrawColor(myRenderer, 255, 255, 255, 255) ;
>SDL_RenderFillRect(myRenderer, &myRect) ;
>glDisable(GL_COLOR_LOGIC_OP) ;
>
>SDL_AddEventWatch(myEventFilter, 0) ;
>
>// Main loop:
>while (running)
>{
>	static unsigned int zoom = 32768 ;
>	static int offsetx, offsety ;
>	unsigned int lastpaint ;
>	unsigned int now = SDL_GetTicks() ;
>	float scale = (float)(zoom) / 32768.0 ; // must be float
>
>	if (((now >= (lastpaint + PACER)) || (now < lastpaint)) && !bkgnd)
>	{
>		int winx, winy ;
>		SDL_Rect DestRect ;
>		SDL_Texture *myTexture = SDL_GetRenderTarget(myRenderer) ;
>		SDL_GetWindowSize(myWindow, &winx, &winy) ;
>
>		DestRect.x = -offsetx * scale ;
>		DestRect.y = -offsety * scale ;
>		DestRect.w = sizex * scale ;
>		DestRect.h = sizey * scale ;
>		DestRect.x += (winx - DestRect.w) >> 1 ;
>
>		SDL_SetRenderTarget(myRenderer, NULL) ;
>		SDL_SetRenderDrawColor(myRenderer, 0, 0, 0, 255) ;
>		SDL_RenderClear(myRenderer) ;
>		SDL_RenderCopy(myRenderer, myTexture, NULL, &DestRect) ;
>		SDL_RenderPresent(myRenderer) ;
>		SDL_SetRenderTarget(myRenderer, myTexture) ;
>
>		lastpaint = SDL_GetTicks() ; // wraps around after 50 days
>	}
>
>	SDL_PumpEvents() ;
>	if (SDL_PeepEvents(&ev, 1, SDL_GETEVENT, 0, SDL_USEREVENT-1))
>		switch (ev.type)
>		{
>			static float panx, pany ;
>
>			case SDL_QUIT:
>				running = 0 ;
>				break ;
>
>			case SDL_MULTIGESTURE :
>			if (fabs(ev.mgesture.dDist) > 0.002)
>					zoom = zoom * (1.0 + ev.mgesture.dDist) /
>						      (1.0 - ev.mgesture.dDist) ;
>
>				if (fabs(ev.mgesture.x - panx) < 0.05)
>					offsetx -= sizex * (ev.mgesture.x - panx) / scale ;
>
>				if (fabs(ev.mgesture.y - pany) < 0.05)
>					offsety -= sizey * (ev.mgesture.y - pany) / scale ;
>	
>				panx = ev.mgesture.x ;
>				pany = ev.mgesture.y ;
>				break ;
>		}
>
>	else
>		SDL_Delay(IDLE) ;
>
>}
>
>SDL_DestroyRenderer(myRenderer) ;
>SDL_DestroyWindow(myWindow) ;
>SDL_Quit() ;
>
>exit(0) ;
>}

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Attachments on bug 3304: 2404

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.