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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403516
This commit is contained in:
Sam Lantinga 2009-01-30 06:38:44 +00:00
parent 9bb60da027
commit d0b1ee8e2f
2 changed files with 52 additions and 51 deletions
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42
src/video/x11/SDL_x11gamma.c
View file

@ -97,21 +97,21 @@ X11_TrackColormap(Display * display, int scrNum, Colormap colormap,
cmapTable[numCmaps].ramp = NULL;
if (ramp != NULL) {
newramp = SDL_malloc(SDL_GammaRampSize);
if (NULL == newramp) {
SDL_SetError("Out of memory in X11_TrackColormap()");
return;
}
SDL_memset(newramp, 0, SDL_GammaRampSize);
cmapTable[numCmaps].ramp = newramp;
newramp = SDL_malloc(SDL_GammaRampSize);
if (NULL == newramp) {
SDL_SetError("Out of memory in X11_TrackColormap()");
return;
}
SDL_memset(newramp, 0, SDL_GammaRampSize);
cmapTable[numCmaps].ramp = newramp;
ncolors = cmapTable[numCmaps].visual.map_entries;
ncolors = cmapTable[numCmaps].visual.map_entries;
for (i = 0; i < ncolors; i++) {
newramp[(0 * 256) + i] = ramp[i].red;
newramp[(1 * 256) + i] = ramp[i].green;
newramp[(2 * 256) + i] = ramp[i].blue;
}
for (i = 0; i < ncolors; i++) {
newramp[(0 * 256) + i] = ramp[i].red;
newramp[(1 * 256) + i] = ramp[i].green;
newramp[(2 * 256) + i] = ramp[i].blue;
}
}
numCmaps++;
@ -149,14 +149,14 @@ X11_SetDisplayGammaRamp(_THIS, Uint16 * ramp)
return -1;
}
/* remember the new ramp */
if (cmapTable[j].ramp == NULL) {
Uint16 * newramp = SDL_malloc(SDL_GammaRampSize);
if (NULL == newramp) {
SDL_SetError("Out of memory in X11_TrackColormap()");
return -1;
}
cmapTable[j].ramp = newramp;
}
if (cmapTable[j].ramp == NULL) {
Uint16 *newramp = SDL_malloc(SDL_GammaRampSize);
if (NULL == newramp) {
SDL_SetError("Out of memory in X11_TrackColormap()");
return -1;
}
cmapTable[j].ramp = newramp;
}
SDL_memcpy(cmapTable[j].ramp, ramp, SDL_GammaRampSize);
rshift = 0;

61
src/video/x11/SDL_x11window.c
View file

@ -220,14 +220,14 @@ X11_CreateWindow(_THIS, SDL_Window * window)
XStandardColormap cmap;
XColor *colorcells;
Colormap colormap;
Sint32 pix;
Sint32 pix;
Sint32 ncolors;
Sint32 nbits;
Sint32 rmax, gmax, bmax;
Sint32 rwidth, gwidth, bwidth;
Sint32 rwidth, gwidth, bwidth;
Sint32 rmask, gmask, bmask;
Sint32 rshift, gshift, bshift;
Sint32 r, g, b;
Sint32 r, g, b;
/* Is the colormap we need already registered in SDL? */
if (colormap =
@ -259,26 +259,26 @@ X11_CreateWindow(_THIS, SDL_Window * window)
}
ncolors = visual->map_entries;
nbits = visual->bits_per_rgb;
nbits = visual->bits_per_rgb;
/* printf("ncolors = %d nbits = %d\n", ncolors, nbits); */
/* what if ncolors != (1 << nbits)? That can happen on a
true PseudoColor display. I'm assuming that we will
always have ncolors == (1 << nbits)*/
/* what if ncolors != (1 << nbits)? That can happen on a
true PseudoColor display. I'm assuming that we will
always have ncolors == (1 << nbits) */
/* I'm making a lot of assumptions here. */
/* Compute the width of each field. If there is one extra
bit, give it to green. If there are two extra bits give
them to red and greed. We can get extra bits when the
number of bits per pixel is not a multiple of 3. For
example when we have 16 bits per pixel and need a 5/6/5
layout for the RGB fields */
/* I'm making a lot of assumptions here. */
rwidth = (nbits / 3) + (((nbits % 3) == 2) ? 1 : 0);
gwidth = (nbits / 3) + (((nbits % 3) >= 1) ? 1 : 0);
bwidth = (nbits / 3);
/* Compute the width of each field. If there is one extra
bit, give it to green. If there are two extra bits give
them to red and greed. We can get extra bits when the
number of bits per pixel is not a multiple of 3. For
example when we have 16 bits per pixel and need a 5/6/5
layout for the RGB fields */
rwidth = (nbits / 3) + (((nbits % 3) == 2) ? 1 : 0);
gwidth = (nbits / 3) + (((nbits % 3) >= 1) ? 1 : 0);
bwidth = (nbits / 3);
rshift = gwidth + bwidth;
gshift = bwidth;
@ -297,24 +297,25 @@ X11_CreateWindow(_THIS, SDL_Window * window)
/* printf("blue mask = %4x shift = %4d width = %d\n", bmask, bshift, bwidth); */
/* build the color table pixel values */
pix = 0;
for (r = 0; r < rmax; r++) {
for (g = 0; g < gmax; g++) {
for (b = 0; b < bmax; b++) {
colorcells[pix].pixel = (r << rshift) | (g << gshift) | (b << bshift);
colorcells[pix].red = (0xffff * r) / rmask;
colorcells[pix].green = (0xffff * g) / gmask;
colorcells[pix].blue = (0xffff * b) / bmask;
pix = 0;
for (r = 0; r < rmax; r++) {
for (g = 0; g < gmax; g++) {
for (b = 0; b < bmax; b++) {
colorcells[pix].pixel =
(r << rshift) | (g << gshift) | (b << bshift);
colorcells[pix].red = (0xffff * r) / rmask;
colorcells[pix].green = (0xffff * g) / gmask;
colorcells[pix].blue = (0xffff * b) / bmask;
/* printf("%4x:%4x [%4x %4x %4x]\n", */
/* pix, */
/* colorcells[pix].pixel, */
/* colorcells[pix].red, */
/* colorcells[pix].green, */
/* colorcells[pix].blue); */
pix++;
}
}
}
pix++;
}
}
}
/* status = */
/* XStoreColors(data->display, colormap, colorcells, ncolors); */