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Date: Fri, 15 Aug 2003 09:13:59 +0300
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From: "Mike Gorchak"
Subject: Patches for tests and QNX6

1) graywin - added support for the gray gradient in the 15/16 bpp modes. Added SDL_VIDEOEXPOSE event handling.
2) testalpha - added support for the gray gradient in the 15/16 bpp modes.
3) testbitmap - added support for the gray gradient in the 8/15/16 bpp modes.
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@slouken
slouken committed Aug 23, 2003
1 parent 59c5ae6 commit 0ef4e82
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Showing 3 changed files with 137 additions and 37 deletions.
101 changes: 73 additions & 28 deletions test/graywin.c
View file
Expand Up @@ -20,6 +20,7 @@ void DrawBox(SDL_Surface *screen, int X, int Y, int width, int height)
static unsigned int seeded = 0;
SDL_Rect area;
Uint32 color;
Uint32 randc;

/* Seed the random number generator */
if ( seeded == 0 ) {
Expand All @@ -32,7 +33,16 @@ void DrawBox(SDL_Surface *screen, int X, int Y, int width, int height)
area.h = (rand()%height);
area.x = X-(area.w/2);
area.y = Y-(area.h/2);
color = (rand()%NUM_COLORS);
randc = (rand()%NUM_COLORS);

if (screen->format->BytesPerPixel==1)
{
color = randc;
}
else
{
color = SDL_MapRGB(screen->format, randc, randc, randc);
}

/* Do it! */
SDL_FillRect(screen, &area, color);
Expand All @@ -43,12 +53,60 @@ void DrawBox(SDL_Surface *screen, int X, int Y, int width, int height)
}
}

void DrawBackground(SDL_Surface *screen)
{
int i, j, k;
Uint8 *buffer;
Uint16 *buffer16;
Uint16 color;
Uint8 gradient;

/* Set the surface pixels and refresh! */
/* Use two loops in case the surface is double-buffered (both sides) */

for ( j=0; j<2; ++j ) {
if ( SDL_LockSurface(screen) < 0 ) {
fprintf(stderr, "Couldn't lock display surface: %s\n",
SDL_GetError());
return;
}
buffer = (Uint8 *)screen->pixels;

if (screen->format->BytesPerPixel!=2) {
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*(NUM_COLORS-1))/screen->h, screen->w * screen->format->BytesPerPixel);
buffer += screen->pitch;
}
}
else
{
for ( i=0; i<screen->h; ++i ) {
gradient=((i*(NUM_COLORS-1))/screen->h);
color = SDL_MapRGB(screen->format, gradient, gradient, gradient);
buffer16=(Uint16*)buffer;
for (k=0; k<screen->w; k++)
{
*(buffer16+k)=color;
}
buffer += screen->pitch;
}
}

SDL_UnlockSurface(screen);
if ( screen->flags & SDL_DOUBLEBUF ) {
SDL_Flip(screen);
} else {
SDL_UpdateRect(screen, 0, 0, 0, 0);
break;
}
}
}

SDL_Surface *CreateScreen(Uint16 w, Uint16 h, Uint8 bpp, Uint32 flags)
{
SDL_Surface *screen;
int i;
SDL_Color palette[NUM_COLORS];
Uint8 *buffer;

/* Set the video mode */
screen = SDL_SetVideoMode(w, h, bpp, flags);
Expand All @@ -60,33 +118,14 @@ SDL_Surface *CreateScreen(Uint16 w, Uint16 h, Uint8 bpp, Uint32 flags)
fprintf(stderr, "Screen is in %s mode\n",
(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");

/* Set a gray colormap, reverse order from white to black */
for ( i=0; i<NUM_COLORS; ++i ) {
palette[i].r = (NUM_COLORS-1)-i * (256 / NUM_COLORS);
palette[i].g = (NUM_COLORS-1)-i * (256 / NUM_COLORS);
palette[i].b = (NUM_COLORS-1)-i * (256 / NUM_COLORS);
}
SDL_SetColors(screen, palette, 0, NUM_COLORS);

/* Set the surface pixels and refresh! */
/* Use two loops in case the surface is double-buffered (both sides) */
for ( i=0; i<2; ++i ) {
if ( SDL_LockSurface(screen) < 0 ) {
fprintf(stderr, "Couldn't lock display surface: %s\n",
SDL_GetError());
return(NULL);
}
buffer = (Uint8 *)screen->pixels;
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*(NUM_COLORS-1))/screen->h, screen->w * screen->format->BytesPerPixel);
buffer += screen->pitch;
}
SDL_UnlockSurface(screen);
if ( screen->flags & SDL_DOUBLEBUF ) {
SDL_Flip(screen);
} else {
SDL_UpdateRect(screen, 0, 0, 0, 0);
if (bpp==8) {
/* Set a gray colormap, reverse order from white to black */
for ( i=0; i<NUM_COLORS; ++i ) {
palette[i].r = (NUM_COLORS-1)-i * (256 / NUM_COLORS);
palette[i].g = (NUM_COLORS-1)-i * (256 / NUM_COLORS);
palette[i].b = (NUM_COLORS-1)-i * (256 / NUM_COLORS);
}
SDL_SetColors(screen, palette, 0, NUM_COLORS);
}

return(screen);
Expand Down Expand Up @@ -151,6 +190,8 @@ int main(int argc, char *argv[])
if ( screen == NULL ) {
exit(2);
}

DrawBackground(screen);

/* Wait for a keystroke */
done = 0;
Expand Down Expand Up @@ -182,12 +223,16 @@ int main(int argc, char *argv[])
"Couldn't toggle fullscreen mode\n");
done = 1;
}
DrawBackground(screen);
break;
}
/* Any other key quits the application... */
case SDL_QUIT:
done = 1;
break;
case SDL_VIDEOEXPOSE:
DrawBackground(screen);
break;
default:
break;
}
Expand Down
33 changes: 29 additions & 4 deletions test/testalpha.c
View file
Expand Up @@ -279,11 +279,15 @@ int main(int argc, char *argv[])
Uint8 video_bpp;
Uint32 videoflags;
Uint8 *buffer;
int i, done;
int i, k, done;
SDL_Event event;
SDL_Surface *light;
int mouse_pressed;
Uint32 ticks, lastticks;
Uint16 *buffer16;
Uint16 color;
Uint8 gradient;


/* Initialize SDL */
if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
Expand All @@ -298,12 +302,17 @@ int main(int argc, char *argv[])
video_bpp = info->vfmt->BitsPerPixel;
} else {
video_bpp = 16;
fprintf(stderr, "forced 16 bpp mode\n");
}
videoflags = SDL_SWSURFACE;
while ( argc > 1 ) {
--argc;
if ( strcmp(argv[argc-1], "-bpp") == 0 ) {
video_bpp = atoi(argv[argc]);
if (video_bpp<=8) {
video_bpp=16;
fprintf(stderr, "forced 16 bpp mode\n");
}
--argc;
} else
if ( strcmp(argv[argc], "-hw") == 0 ) {
Expand Down Expand Up @@ -336,10 +345,26 @@ int main(int argc, char *argv[])
exit(2);
}
buffer=(Uint8 *)screen->pixels;
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*255)/screen->h, screen->pitch);
buffer += screen->pitch;
if (screen->format->BytesPerPixel!=2) {
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*255)/screen->h, screen->pitch);
buffer += screen->pitch;
}
}
else
{
for ( i=0; i<screen->h; ++i ) {
gradient=((i*255)/screen->h);
color = SDL_MapRGB(screen->format, gradient, gradient, gradient);
buffer16=(Uint16*)buffer;
for (k=0; k<screen->w; k++)
{
*(buffer16+k)=color;
}
buffer += screen->pitch;
}
}

SDL_UnlockSurface(screen);
SDL_UpdateRect(screen, 0, 0, 0, 0);

Expand Down
40 changes: 35 additions & 5 deletions test/testbitmap.c
View file
Expand Up @@ -50,8 +50,13 @@ int main(int argc, char *argv[])
Uint8 video_bpp;
Uint32 videoflags;
Uint8 *buffer;
int i, done;
int i, k, done;
SDL_Event event;
Uint16 *buffer16;
Uint16 color;
Uint8 gradient;
SDL_Color palette[256];


/* Initialize SDL */
if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
Expand Down Expand Up @@ -91,17 +96,42 @@ int main(int argc, char *argv[])
exit(2);
}

if (video_bpp==8) {
/* Set a gray colormap, reverse order from white to black */
for ( i=0; i<256; ++i ) {
palette[i].r = 255-i;
palette[i].g = 255-i;
palette[i].b = 255-i;
}
SDL_SetColors(screen, palette, 0, 256);
}

/* Set the surface pixels and refresh! */
if ( SDL_LockSurface(screen) < 0 ) {
fprintf(stderr, "Couldn't lock the display surface: %s\n",
SDL_GetError());
exit(2);
}
buffer=(Uint8 *)screen->pixels;
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*255)/screen->h, screen->pitch);
buffer += screen->pitch;
}
if (screen->format->BytesPerPixel!=2) {
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*255)/screen->h, screen->pitch);
buffer += screen->pitch;
}
}
else
{
for ( i=0; i<screen->h; ++i ) {
gradient=((i*255)/screen->h);
color = SDL_MapRGB(screen->format, gradient, gradient, gradient);
buffer16=(Uint16*)buffer;
for (k=0; k<screen->w; k++)
{
*(buffer16+k)=color;
}
buffer += screen->pitch;
}
}
SDL_UnlockSurface(screen);
SDL_UpdateRect(screen, 0, 0, 0, 0);

Expand Down

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