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surface.c
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/**
* Automated SDL_Surface test.
*
* Written by Edgar Simo "bobbens"
*
* Released under Public Domain.
*/
#include "SDL.h"
#include "SDL_at.h"
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
# define RMASK 0xff000000 /**< Red bit mask. */
# define GMASK 0x00ff0000 /**< Green bit mask. */
# define BMASK 0x0000ff00 /**< Blue bit mask. */
# define AMASK 0x000000ff /**< Alpha bit mask. */
#else
# define RMASK 0x000000ff /**< Red bit mask. */
# define GMASK 0x0000ff00 /**< Green bit mask. */
# define BMASK 0x00ff0000 /**< Blue bit mask. */
# define AMASK 0xff000000 /**< Alpha bit mask. */
#endif
typedef struct SurfaceImage_s {
unsigned int width;
unsigned int height;
unsigned int bytes_per_pixel; /* 3:RGB, 4:RGBA */
const unsigned char pixel_data[];
} SurfaceImage_t;
/*
* Pull in images for testcases.
*/
#include "primitives.c"
/**
* @brief Compares a surface and a surface image for equality.
*
* @param sur Surface to compare.
* @param img Image to compare against.
* @return 0 if they are the same, -1 on error and positive if different.
*/
static int surface_compare( SDL_Surface *sur, const SurfaceImage_t *img )
{
int ret;
int i,j;
Uint32 pix;
int bpp;
Uint8 *p, *pd;
/* Make sure size is the same. */
if ((sur->w != img->width) || (sur->h != img->height))
return -1;
SDL_LockSurface( sur );
ret = 0;
bpp = sur->format->BytesPerPixel;
/* Compare image - should be same format. */
for (j=0; j<sur->h; j++) {
for (i=0; i<sur->w; i++) {
p = (Uint8 *)sur->pixels + j * sur->pitch + i * bpp;
pd = (Uint8 *)img->pixel_data + (j*img->width + i) * img->bytes_per_pixel;
switch (bpp) {
case 1:
/* Paletted not supported atm. */
ret += 1;
break;
case 2:
/* 16 BPP not supported atm. */
ret += 1;
break;
case 3:
/* 24 BPP not supported atm. */
ret += 1;
break;
case 4:
ret += !( (p[0] == pd[0]) &&
(p[1] == pd[1]) &&
(p[2] == pd[2]) );
break;
}
}
}
SDL_UnlockSurface( sur );
return ret;
}
/**
* @brief Tests the SDL primitives for rendering.
*/
static void surface_testPrimitives (void)
{
int ret;
int x, y;
SDL_Rect rect;
SDL_Surface *testsur;
SDL_ATbegin( "Primitives Test" );
/* Create the surface. */
testsur = SDL_CreateRGBSurface( 0, 80, 60, 32,
RMASK, GMASK, BMASK, AMASK );
if (SDL_ATassert( "SDL_CreateRGBSurface", testsur != NULL))
return;
/* Draw a rectangle. */
rect.x = 40;
rect.y = 0;
rect.w = 40;
rect.h = 80;
ret = SDL_FillRect( testsur, &rect,
SDL_MapRGB( testsur->format, 13, 73, 200 ) );
if (SDL_ATassert( "SDL_FillRect", ret == 0))
return;
/* Draw a rectangle. */
rect.x = 10;
rect.y = 10;
rect.w = 60;
rect.h = 40;
ret = SDL_FillRect( testsur, &rect,
SDL_MapRGB( testsur->format, 200, 0, 100 ) );
if (SDL_ATassert( "SDL_FillRect", ret == 0))
return;
/* Draw some points like so:
* X.X.X.X..
* .X.X.X.X.
* X.X.X.X.. */
for (y=0; y<3; y++) {
x = y % 2;
for (; x<80; x+=2)
ret = SDL_DrawPoint( testsur, x, y,
SDL_MapRGB( testsur->format, x*y, x*y/2, x*y/3 ) );
if (SDL_ATassert( "SDL_DrawPoint", ret == 0))
return;
}
/* Draw some lines. */
ret = SDL_DrawLine( testsur, 0, 30, 80, 30,
SDL_MapRGB( testsur->format, 0, 255, 0 ) );
if (SDL_ATassert( "SDL_DrawLine", ret == 0))
return;
ret = SDL_DrawLine( testsur, 40, 30, 40, 60,
SDL_MapRGB( testsur->format, 55, 55, 5 ) );
if (SDL_ATassert( "SDL_DrawLine", ret == 0))
return;
ret = SDL_DrawLine( testsur, 0, 60, 80, 0,
SDL_MapRGB( testsur->format, 5, 105, 105 ) );
if (SDL_ATassert( "SDL_DrawLine", ret == 0))
return;
/* See if it's the same. */
if (SDL_ATassert( "Primitives output not the same.",
surface_compare( testsur, &img_primitives )==0 ))
return;
/* Clean up. */
SDL_FreeSurface( testsur );
SDL_ATend();
}
/**
* @brief Entry point.
*/
int main( int argc, const char *argv[] )
{
SDL_ATinit( "SDL_Surface" );
/* Initializes the SDL subsystems. */
SDL_Init(0);
surface_testPrimitives();
/*surface_testPrimitivesAlpha();*/
/* Exit SDL. */
SDL_Quit();
return SDL_ATfinish(1);
}