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Added example of using the software renderer and window surface API, contributed by Nitin Jain.

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Sam Lantinga 2013-07-27 03:48:23 -07:00
parent 0754901ca9
commit 17482012af
2 changed files with 109 additions and 0 deletions
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4
test/Makefile.in
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@ -13,6 +13,7 @@ TARGETS = \
testaudioinfo$(EXE) \ testaudioinfo$(EXE) \
testautomation$(EXE) \ testautomation$(EXE) \
testdraw2$(EXE) \ testdraw2$(EXE) \
testdrawchessboard$(EXE) \
testerror$(EXE) \ testerror$(EXE) \
testfile$(EXE) \ testfile$(EXE) \
testgamecontroller$(EXE) \ testgamecontroller$(EXE) \
@ -103,6 +104,9 @@ testrelative$(EXE): $(srcdir)/testrelative.c
testdraw2$(EXE): $(srcdir)/testdraw2.c testdraw2$(EXE): $(srcdir)/testdraw2.c
$(CC) -o $@ $^ $(CFLAGS) $(LIBS) $(CC) -o $@ $^ $(CFLAGS) $(LIBS)
testdrawchessboard$(EXE): $(srcdir)/testdrawchessboard.c
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
testerror$(EXE): $(srcdir)/testerror.c testerror$(EXE): $(srcdir)/testerror.c
$(CC) -o $@ $^ $(CFLAGS) $(LIBS) $(CC) -o $@ $^ $(CFLAGS) $(LIBS)

105
test/testdrawchessboard.c Normal file
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@ -0,0 +1,105 @@
/*
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
This file is created by : Nitin Jain (nitin.j4@samsung.com)
*/
/* Sample program: Draw a Chess Board by using SDL_CreateSoftwareRenderer API */
#include <stdlib.h>
#include <stdio.h>
#include "SDL.h"
void
DrawChessBoard(SDL_Renderer * renderer)
{
int row = 0,coloum = 0,x = 0;
SDL_Rect rect, darea;
/* Get the Size of drawing surface */
SDL_RenderGetViewport(renderer, &darea);
for(row; row < 8; row++)
{
coloum = row%2;
x = x + coloum;
for(coloum; coloum < 4+(row%2); coloum++)
{
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
rect.w = darea.w/8;
rect.h = darea.h/8;
rect.x = x * rect.w;
rect.y = row * rect.h;
x = x + 2;
SDL_RenderFillRect(renderer, &rect);
}
x=0;
}
}
int
main(int argc, char *argv[])
{
SDL_Event event;
/* Initialize SDL */
if(SDL_Init(SDL_INIT_VIDEO) != 0)
{
fprintf(stderr,"SDL_Init fail : %s\n", SDL_GetError());
return 1;
}
/* Create window and renderer for given surface */
SDL_Window *window = SDL_CreateWindow("Chess Board",SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,640,480,SDL_WINDOW_SHOWN);
if(!window)
{
fprintf(stderr,"Window creation fail : %s\n",SDL_GetError());
return 1;
}
SDL_Surface *surface = SDL_GetWindowSurface(window);
SDL_Renderer *renderer = SDL_CreateSoftwareRenderer(surface);
if(!renderer)
{
fprintf(stderr,"Render creation for surface fail : %s\n",SDL_GetError());
return 1;
}
/* Clear the rendering surface with the specidfied colour */
SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0);
SDL_RenderClear(renderer);
/* Draw the Image on rendering surface */
while(1)
{
SDL_Event e;
if (SDL_PollEvent(&e)) {
if (e.type == SDL_QUIT)
break;
if(e.key.keysym.sym == SDLK_ESCAPE)
break;
}
DrawChessBoard(renderer);
/* Got everything on redering surface,
now Update the drawing image on window screen */
SDL_UpdateWindowSurface(window);
}
return 0;
}