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Date: Fri, 15 Aug 2003 09:13:59 +0300

Browse source 
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.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40692
This commit is contained in:
Sam Lantinga 2003-08-23 23:18:49 +00:00
parent dc54e92e13
commit 0cc5681acd
3 changed files with 137 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

101
test/graywin.c
View file

@ -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 ) {
@ -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);
@ -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);
@ -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);
@ -151,6 +190,8 @@ int main(int argc, char *argv[])
if ( screen == NULL ) {
exit(2);
}
DrawBackground(screen);
/* Wait for a keystroke */
done = 0;
@ -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;
}