slouken@0
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/*
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slouken@0
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SDL - Simple DirectMedia Layer
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slouken@1312
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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slouken@0
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14 |
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slouken@1312
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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slouken@0
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slouken@0
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Sam Lantinga
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slouken@252
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slouken@libsdl.org
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slouken@0
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*/
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#include "SDL_config.h"
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#include "SDL_video.h"
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#include "SDL_compat.h"
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#include "SDL_sysvideo.h"
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#include "SDL_blit.h"
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#include "SDL_RLEaccel_c.h"
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#include "SDL_pixels_c.h"
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#include "SDL_leaks.h"
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/* Public routines */
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/*
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* Create an empty RGB surface of the appropriate depth
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*/
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SDL_Surface *
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SDL_CreateRGBSurface(Uint32 flags,
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int width, int height, int depth,
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Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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{
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SDL_Surface *surface;
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/* Allocate the surface */
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surface = (SDL_Surface *) SDL_calloc(1, sizeof(*surface));
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if (surface == NULL) {
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SDL_OutOfMemory();
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return NULL;
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}
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surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
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if (!surface->format) {
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SDL_FreeSurface(surface);
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return NULL;
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}
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if (Amask) {
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surface->flags |= SDL_SRCALPHA;
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}
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surface->w = width;
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surface->h = height;
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surface->pitch = SDL_CalculatePitch(surface);
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SDL_SetClipRect(surface, NULL);
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if (surface->format->BitsPerPixel <= 8) {
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SDL_Palette *palette =
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SDL_AllocPalette((1 << surface->format->BitsPerPixel));
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if (!palette) {
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SDL_FreeSurface(surface);
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return NULL;
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}
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if (Rmask || Bmask || Gmask) {
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const SDL_PixelFormat *format = surface->format;
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/* create palette according to masks */
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int i;
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int Rm = 0, Gm = 0, Bm = 0;
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int Rw = 0, Gw = 0, Bw = 0;
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if (Rmask) {
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Rw = 8 - format->Rloss;
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for (i = format->Rloss; i > 0; i -= Rw)
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Rm |= 1 << i;
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}
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if (Gmask) {
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Gw = 8 - format->Gloss;
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for (i = format->Gloss; i > 0; i -= Gw)
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Gm |= 1 << i;
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}
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if (Bmask) {
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Bw = 8 - format->Bloss;
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for (i = format->Bloss; i > 0; i -= Bw)
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Bm |= 1 << i;
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}
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for (i = 0; i < palette->ncolors; ++i) {
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int r, g, b;
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r = (i & Rmask) >> format->Rshift;
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r = (r << format->Rloss) | ((r * Rm) >> Rw);
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palette->colors[i].r = r;
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g = (i & Gmask) >> format->Gshift;
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g = (g << format->Gloss) | ((g * Gm) >> Gw);
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palette->colors[i].g = g;
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b = (i & Bmask) >> format->Bshift;
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b = (b << format->Bloss) | ((b * Bm) >> Bw);
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palette->colors[i].b = b;
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}
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} else if (palette->ncolors == 2) {
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/* Create a black and white bitmap palette */
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palette->colors[0].r = 0xFF;
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palette->colors[0].g = 0xFF;
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palette->colors[0].b = 0xFF;
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palette->colors[1].r = 0x00;
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palette->colors[1].g = 0x00;
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palette->colors[1].b = 0x00;
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}
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SDL_SetSurfacePalette(surface, palette);
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SDL_FreePalette(palette);
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}
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/* Get the pixels */
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if (surface->w && surface->h) {
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surface->pixels = SDL_malloc(surface->h * surface->pitch);
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if (!surface->pixels) {
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SDL_FreeSurface(surface);
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SDL_OutOfMemory();
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return NULL;
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}
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/* This is important for bitmaps */
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SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
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}
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/* Allocate an empty mapping */
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surface->map = SDL_AllocBlitMap();
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if (!surface->map) {
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SDL_FreeSurface(surface);
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return NULL;
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}
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SDL_FormatChanged(surface);
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/* The surface is ready to go */
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surface->refcount = 1;
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slouken@0
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#ifdef CHECK_LEAKS
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++surfaces_allocated;
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#endif
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slouken@1895
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return surface;
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slouken@0
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}
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slouken@1895
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slouken@0
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/*
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* Create an RGB surface from an existing memory buffer
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*/
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SDL_Surface *
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SDL_CreateRGBSurfaceFrom(void *pixels,
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int width, int height, int depth, int pitch,
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Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
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slouken@1895
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Uint32 Amask)
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slouken@0
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{
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slouken@1895
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SDL_Surface *surface;
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slouken@1895
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surface =
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slouken@1895
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SDL_CreateRGBSurface(0, 0, 0, depth, Rmask, Gmask, Bmask, Amask);
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slouken@1895
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if (surface != NULL) {
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slouken@1895
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surface->flags |= SDL_PREALLOC;
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slouken@1895
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surface->pixels = pixels;
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slouken@1895
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surface->w = width;
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slouken@1895
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surface->h = height;
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slouken@1895
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surface->pitch = pitch;
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slouken@1895
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SDL_SetClipRect(surface, NULL);
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slouken@1895
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}
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slouken@1895
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return surface;
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slouken@1895
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}
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slouken@1895
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slouken@1895
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SDL_Surface *
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slouken@1895
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SDL_CreateRGBSurfaceFromTexture(SDL_TextureID textureID)
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{
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slouken@1895
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SDL_Surface *surface;
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slouken@1895
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Uint32 format;
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slouken@1895
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int w, h;
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slouken@1895
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int bpp;
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slouken@1895
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Uint32 Rmask, Gmask, Bmask, Amask;
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slouken@1895
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void *pixels;
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slouken@1895
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int pitch;
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slouken@1895
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183 |
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slouken@1895
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if (SDL_QueryTexture(textureID, &format, NULL, &w, &h) < 0) {
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slouken@1895
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return NULL;
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slouken@1895
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}
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slouken@1895
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187 |
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slouken@1895
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188 |
if (!SDL_PixelFormatEnumToMasks
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slouken@1895
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(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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slouken@1895
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SDL_SetError("Unknown texture format");
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slouken@1895
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return NULL;
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slouken@1895
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}
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slouken@0
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slouken@1895
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if (SDL_QueryTexturePixels(textureID, &pixels, &pitch) == 0) {
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slouken@1895
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surface =
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slouken@1895
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SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch, Rmask, Gmask,
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slouken@1895
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Bmask, Amask);
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slouken@1895
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} else {
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slouken@1895
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surface =
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slouken@1895
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200 |
SDL_CreateRGBSurface(0, 0, 0, bpp, Rmask, Gmask, Bmask, Amask);
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slouken@1895
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201 |
if (surface) {
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slouken@1895
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202 |
surface->flags |= SDL_HWSURFACE;
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slouken@1895
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203 |
surface->w = w;
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slouken@1895
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204 |
surface->h = h;
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slouken@1895
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205 |
surface->pitch = SDL_CalculatePitch(surface);
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slouken@1895
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206 |
SDL_SetClipRect(surface, NULL);
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slouken@1895
|
207 |
}
|
slouken@1895
|
208 |
}
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slouken@1895
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209 |
if (surface) {
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slouken@1895
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210 |
surface->textureID = textureID;
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slouken@1895
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211 |
}
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slouken@1895
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212 |
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slouken@1895
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213 |
return surface;
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slouken@0
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214 |
}
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slouken@1895
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215 |
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slouken@1895
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216 |
static int
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slouken@1895
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217 |
SDL_SurfacePaletteChanged(void *userdata, SDL_Palette * palette)
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slouken@1895
|
218 |
{
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slouken@1895
|
219 |
SDL_Surface *surface = (SDL_Surface *) userdata;
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slouken@1895
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220 |
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slouken@1895
|
221 |
if (surface->textureID) {
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slouken@1895
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222 |
if (SDL_SetTexturePalette
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slouken@1895
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223 |
(surface->textureID, palette->colors, 0, palette->ncolors) < 0) {
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slouken@1895
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224 |
SDL_GetTexturePalette(surface->textureID, palette->colors, 0,
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slouken@1895
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225 |
palette->ncolors);
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slouken@1895
|
226 |
return -1;
|
slouken@1895
|
227 |
}
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slouken@1895
|
228 |
}
|
slouken@1895
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229 |
SDL_FormatChanged(surface);
|
slouken@1895
|
230 |
|
slouken@1895
|
231 |
return 0;
|
slouken@1895
|
232 |
}
|
slouken@1895
|
233 |
|
slouken@1895
|
234 |
int
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slouken@1895
|
235 |
SDL_SetSurfacePalette(SDL_Surface * surface, SDL_Palette * palette)
|
slouken@1895
|
236 |
{
|
slouken@1895
|
237 |
if (!surface || !surface->format) {
|
slouken@1895
|
238 |
SDL_SetError("SDL_SetSurfacePalette() passed a NULL surface");
|
slouken@1895
|
239 |
return -1;
|
slouken@1895
|
240 |
}
|
slouken@1895
|
241 |
|
slouken@1895
|
242 |
if (palette && palette->ncolors != (1 << surface->format->BitsPerPixel)) {
|
slouken@1895
|
243 |
SDL_SetError
|
slouken@1895
|
244 |
("SDL_SetSurfacePalette() passed a palette that doesn't match the surface format");
|
slouken@1895
|
245 |
return -1;
|
slouken@1895
|
246 |
}
|
slouken@1895
|
247 |
|
slouken@1895
|
248 |
if (surface->format->palette == palette) {
|
slouken@1895
|
249 |
return 0;
|
slouken@1895
|
250 |
}
|
slouken@1895
|
251 |
|
slouken@1895
|
252 |
if (surface->format->palette) {
|
slouken@1895
|
253 |
SDL_DelPaletteWatch(surface->format->palette,
|
slouken@1895
|
254 |
SDL_SurfacePaletteChanged, surface);
|
slouken@1895
|
255 |
}
|
slouken@1895
|
256 |
|
slouken@1895
|
257 |
surface->format->palette = palette;
|
slouken@1895
|
258 |
|
slouken@1895
|
259 |
if (surface->format->palette) {
|
slouken@1895
|
260 |
SDL_AddPaletteWatch(surface->format->palette,
|
slouken@1895
|
261 |
SDL_SurfacePaletteChanged, surface);
|
slouken@1895
|
262 |
}
|
slouken@1895
|
263 |
return 0;
|
slouken@1895
|
264 |
}
|
slouken@1895
|
265 |
|
slouken@0
|
266 |
/*
|
slouken@0
|
267 |
* Set the color key in a blittable surface
|
slouken@0
|
268 |
*/
|
slouken@1895
|
269 |
int
|
slouken@1895
|
270 |
SDL_SetColorKey(SDL_Surface * surface, Uint32 flag, Uint32 key)
|
slouken@0
|
271 |
{
|
slouken@1895
|
272 |
/* Sanity check the flag as it gets passed in */
|
slouken@1895
|
273 |
if (flag & SDL_SRCCOLORKEY) {
|
slouken@1895
|
274 |
if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
|
slouken@1895
|
275 |
flag = (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
|
slouken@1895
|
276 |
} else {
|
slouken@1895
|
277 |
flag = SDL_SRCCOLORKEY;
|
slouken@1895
|
278 |
}
|
slouken@1895
|
279 |
} else {
|
slouken@1895
|
280 |
flag = 0;
|
slouken@1895
|
281 |
}
|
slouken@0
|
282 |
|
slouken@1895
|
283 |
/* Optimize away operations that don't change anything */
|
slouken@1895
|
284 |
if ((flag == (surface->flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK))) &&
|
slouken@1895
|
285 |
(key == surface->format->colorkey)) {
|
slouken@1895
|
286 |
return (0);
|
slouken@1895
|
287 |
}
|
slouken@0
|
288 |
|
slouken@1895
|
289 |
/* UnRLE surfaces before we change the colorkey */
|
slouken@1895
|
290 |
if (surface->flags & SDL_RLEACCEL) {
|
slouken@1895
|
291 |
SDL_UnRLESurface(surface, 1);
|
slouken@1895
|
292 |
}
|
slouken@0
|
293 |
|
slouken@1895
|
294 |
if (flag) {
|
slouken@1895
|
295 |
surface->flags |= SDL_SRCCOLORKEY;
|
slouken@1895
|
296 |
surface->format->colorkey = key;
|
slouken@1895
|
297 |
if (flag & SDL_RLEACCELOK) {
|
slouken@1895
|
298 |
surface->flags |= SDL_RLEACCELOK;
|
slouken@1895
|
299 |
} else {
|
slouken@1895
|
300 |
surface->flags &= ~SDL_RLEACCELOK;
|
slouken@1895
|
301 |
}
|
slouken@1895
|
302 |
} else {
|
slouken@1895
|
303 |
surface->flags &= ~(SDL_SRCCOLORKEY | SDL_RLEACCELOK);
|
slouken@1895
|
304 |
surface->format->colorkey = 0;
|
slouken@1895
|
305 |
}
|
slouken@1895
|
306 |
SDL_InvalidateMap(surface->map);
|
slouken@1895
|
307 |
return (0);
|
slouken@0
|
308 |
}
|
slouken@1895
|
309 |
|
slouken@431
|
310 |
/* This function sets the alpha channel of a surface */
|
slouken@1895
|
311 |
int
|
slouken@1895
|
312 |
SDL_SetAlpha(SDL_Surface * surface, Uint32 flag, Uint8 value)
|
slouken@0
|
313 |
{
|
slouken@1895
|
314 |
Uint32 oldflags = surface->flags;
|
slouken@1895
|
315 |
Uint32 oldalpha = surface->format->alpha;
|
slouken@0
|
316 |
|
slouken@1895
|
317 |
/* Sanity check the flag as it gets passed in */
|
slouken@1895
|
318 |
if (flag & SDL_SRCALPHA) {
|
slouken@1895
|
319 |
if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
|
slouken@1895
|
320 |
flag = (SDL_SRCALPHA | SDL_RLEACCELOK);
|
slouken@1895
|
321 |
} else {
|
slouken@1895
|
322 |
flag = SDL_SRCALPHA;
|
slouken@1895
|
323 |
}
|
slouken@1895
|
324 |
} else {
|
slouken@1895
|
325 |
flag = 0;
|
slouken@1895
|
326 |
}
|
slouken@0
|
327 |
|
slouken@1895
|
328 |
/* Optimize away operations that don't change anything */
|
slouken@1895
|
329 |
if ((flag == (surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK))) &&
|
slouken@1895
|
330 |
(!flag || value == oldalpha)) {
|
slouken@1895
|
331 |
return (0);
|
slouken@1895
|
332 |
}
|
slouken@0
|
333 |
|
slouken@1895
|
334 |
if (!(flag & SDL_RLEACCELOK) && (surface->flags & SDL_RLEACCEL))
|
slouken@1895
|
335 |
SDL_UnRLESurface(surface, 1);
|
slouken@0
|
336 |
|
slouken@1895
|
337 |
if (flag) {
|
slouken@1895
|
338 |
surface->flags |= SDL_SRCALPHA;
|
slouken@1895
|
339 |
surface->format->alpha = value;
|
slouken@1895
|
340 |
if (flag & SDL_RLEACCELOK) {
|
slouken@1895
|
341 |
surface->flags |= SDL_RLEACCELOK;
|
slouken@1895
|
342 |
} else {
|
slouken@1895
|
343 |
surface->flags &= ~SDL_RLEACCELOK;
|
slouken@1895
|
344 |
}
|
slouken@1895
|
345 |
} else {
|
slouken@1895
|
346 |
surface->flags &= ~SDL_SRCALPHA;
|
slouken@1895
|
347 |
surface->format->alpha = SDL_ALPHA_OPAQUE;
|
slouken@1895
|
348 |
}
|
slouken@1895
|
349 |
/*
|
slouken@1895
|
350 |
* The representation for software surfaces is independent of
|
slouken@1895
|
351 |
* per-surface alpha, so no need to invalidate the blit mapping
|
slouken@1895
|
352 |
* if just the alpha value was changed. (If either is 255, we still
|
slouken@1895
|
353 |
* need to invalidate.)
|
slouken@1895
|
354 |
*/
|
slouken@1895
|
355 |
if (oldflags != surface->flags
|
slouken@1895
|
356 |
|| (((oldalpha + 1) ^ (value + 1)) & 0x100)) {
|
slouken@1895
|
357 |
SDL_InvalidateMap(surface->map);
|
slouken@1895
|
358 |
}
|
slouken@1895
|
359 |
return (0);
|
slouken@0
|
360 |
}
|
slouken@1895
|
361 |
|
slouken@1895
|
362 |
int
|
slouken@1895
|
363 |
SDL_SetAlphaChannel(SDL_Surface * surface, Uint8 value)
|
slouken@431
|
364 |
{
|
slouken@1895
|
365 |
int row, col;
|
slouken@1895
|
366 |
int offset;
|
slouken@1895
|
367 |
Uint8 *buf;
|
slouken@431
|
368 |
|
slouken@1895
|
369 |
if ((surface->format->Amask != 0xFF000000) &&
|
slouken@1895
|
370 |
(surface->format->Amask != 0x000000FF)) {
|
slouken@1895
|
371 |
SDL_SetError("Unsupported surface alpha mask format");
|
slouken@1895
|
372 |
return -1;
|
slouken@1895
|
373 |
}
|
slouken@431
|
374 |
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
|
slouken@1895
|
375 |
if (surface->format->Amask == 0xFF000000) {
|
slouken@1895
|
376 |
offset = 3;
|
slouken@1895
|
377 |
} else {
|
slouken@1895
|
378 |
offset = 0;
|
slouken@1895
|
379 |
}
|
slouken@431
|
380 |
#else
|
slouken@1895
|
381 |
if (surface->format->Amask == 0xFF000000) {
|
slouken@1895
|
382 |
offset = 0;
|
slouken@1895
|
383 |
} else {
|
slouken@1895
|
384 |
offset = 3;
|
slouken@1895
|
385 |
}
|
slouken@431
|
386 |
#endif /* Byte ordering */
|
slouken@431
|
387 |
|
slouken@1895
|
388 |
/* Quickly set the alpha channel of an RGBA or ARGB surface */
|
slouken@1895
|
389 |
if (SDL_MUSTLOCK(surface)) {
|
slouken@1895
|
390 |
if (SDL_LockSurface(surface) < 0) {
|
slouken@1895
|
391 |
return -1;
|
slouken@1895
|
392 |
}
|
slouken@1895
|
393 |
}
|
slouken@1895
|
394 |
row = surface->h;
|
slouken@1895
|
395 |
while (row--) {
|
slouken@1895
|
396 |
col = surface->w;
|
slouken@1895
|
397 |
buf = (Uint8 *) surface->pixels + row * surface->pitch + offset;
|
slouken@1895
|
398 |
while (col--) {
|
slouken@1895
|
399 |
*buf = value;
|
slouken@1895
|
400 |
buf += 4;
|
slouken@1895
|
401 |
}
|
slouken@1895
|
402 |
}
|
slouken@1895
|
403 |
if (SDL_MUSTLOCK(surface)) {
|
slouken@1895
|
404 |
SDL_UnlockSurface(surface);
|
slouken@1895
|
405 |
}
|
slouken@1895
|
406 |
return 0;
|
slouken@431
|
407 |
}
|
slouken@0
|
408 |
|
slouken@0
|
409 |
/*
|
slouken@0
|
410 |
* Set the clipping rectangle for a blittable surface
|
slouken@0
|
411 |
*/
|
slouken@1895
|
412 |
SDL_bool
|
slouken@1895
|
413 |
SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect)
|
slouken@0
|
414 |
{
|
slouken@1895
|
415 |
SDL_Rect full_rect;
|
slouken@0
|
416 |
|
slouken@1895
|
417 |
/* Don't do anything if there's no surface to act on */
|
slouken@1895
|
418 |
if (!surface) {
|
slouken@1895
|
419 |
return SDL_FALSE;
|
slouken@1895
|
420 |
}
|
slouken@1895
|
421 |
|
slouken@1895
|
422 |
/* Set up the full surface rectangle */
|
slouken@1895
|
423 |
full_rect.x = 0;
|
slouken@1895
|
424 |
full_rect.y = 0;
|
slouken@1895
|
425 |
full_rect.w = surface->w;
|
slouken@1895
|
426 |
full_rect.h = surface->h;
|
slouken@0
|
427 |
|
slouken@1895
|
428 |
/* Set the clipping rectangle */
|
slouken@1895
|
429 |
if (!rect) {
|
slouken@1895
|
430 |
surface->clip_rect = full_rect;
|
slouken@1895
|
431 |
return 1;
|
slouken@1895
|
432 |
}
|
slouken@1895
|
433 |
return SDL_IntersectRect(rect, &full_rect, &surface->clip_rect);
|
slouken@1895
|
434 |
}
|
slouken@0
|
435 |
|
slouken@1895
|
436 |
void
|
slouken@1895
|
437 |
SDL_GetClipRect(SDL_Surface * surface, SDL_Rect * rect)
|
slouken@1895
|
438 |
{
|
slouken@1895
|
439 |
if (surface && rect) {
|
slouken@1895
|
440 |
*rect = surface->clip_rect;
|
slouken@1895
|
441 |
}
|
slouken@0
|
442 |
}
|
slouken@1895
|
443 |
|
slouken@0
|
444 |
/*
|
slouken@0
|
445 |
* Set up a blit between two surfaces -- split into three parts:
|
slouken@0
|
446 |
* The upper part, SDL_UpperBlit(), performs clipping and rectangle
|
slouken@0
|
447 |
* verification. The lower part is a pointer to a low level
|
slouken@0
|
448 |
* accelerated blitting function.
|
slouken@0
|
449 |
*
|
slouken@0
|
450 |
* These parts are separated out and each used internally by this
|
slouken@0
|
451 |
* library in the optimimum places. They are exported so that if
|
slouken@0
|
452 |
* you know exactly what you are doing, you can optimize your code
|
slouken@0
|
453 |
* by calling the one(s) you need.
|
slouken@0
|
454 |
*/
|
slouken@1895
|
455 |
int
|
slouken@1895
|
456 |
SDL_LowerBlit(SDL_Surface * src, SDL_Rect * srcrect,
|
slouken@1895
|
457 |
SDL_Surface * dst, SDL_Rect * dstrect)
|
slouken@0
|
458 |
{
|
slouken@1895
|
459 |
/* Check to make sure the blit mapping is valid */
|
slouken@1895
|
460 |
if ((src->map->dst != dst) ||
|
slouken@1895
|
461 |
(src->map->dst->format_version != src->map->format_version)) {
|
slouken@1895
|
462 |
if (SDL_MapSurface(src, dst) < 0) {
|
slouken@1895
|
463 |
return (-1);
|
slouken@1895
|
464 |
}
|
slouken@1895
|
465 |
}
|
slouken@1895
|
466 |
return (src->map->sw_blit(src, srcrect, dst, dstrect));
|
slouken@0
|
467 |
}
|
slouken@0
|
468 |
|
slouken@0
|
469 |
|
slouken@1895
|
470 |
int
|
slouken@1895
|
471 |
SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect,
|
slouken@1895
|
472 |
SDL_Surface * dst, SDL_Rect * dstrect)
|
slouken@0
|
473 |
{
|
slouken@1895
|
474 |
SDL_Rect fulldst;
|
slouken@1895
|
475 |
int srcx, srcy, w, h;
|
slouken@0
|
476 |
|
slouken@1895
|
477 |
/* Make sure the surfaces aren't locked */
|
slouken@1895
|
478 |
if (!src || !dst) {
|
slouken@1895
|
479 |
SDL_SetError("SDL_UpperBlit: passed a NULL surface");
|
slouken@1895
|
480 |
return (-1);
|
slouken@1895
|
481 |
}
|
slouken@1895
|
482 |
if (src->locked || dst->locked) {
|
slouken@1895
|
483 |
SDL_SetError("Surfaces must not be locked during blit");
|
slouken@1895
|
484 |
return (-1);
|
slouken@1895
|
485 |
}
|
slouken@0
|
486 |
|
slouken@1895
|
487 |
/* If the destination rectangle is NULL, use the entire dest surface */
|
slouken@1895
|
488 |
if (dstrect == NULL) {
|
slouken@1895
|
489 |
fulldst.x = fulldst.y = 0;
|
slouken@1895
|
490 |
dstrect = &fulldst;
|
slouken@1895
|
491 |
}
|
slouken@1895
|
492 |
|
slouken@1895
|
493 |
/* clip the source rectangle to the source surface */
|
slouken@1895
|
494 |
if (srcrect) {
|
slouken@1895
|
495 |
int maxw, maxh;
|
slouken@0
|
496 |
|
slouken@1895
|
497 |
srcx = srcrect->x;
|
slouken@1895
|
498 |
w = srcrect->w;
|
slouken@1895
|
499 |
if (srcx < 0) {
|
slouken@1895
|
500 |
w += srcx;
|
slouken@1895
|
501 |
dstrect->x -= srcx;
|
slouken@1895
|
502 |
srcx = 0;
|
slouken@1895
|
503 |
}
|
slouken@1895
|
504 |
maxw = src->w - srcx;
|
slouken@1895
|
505 |
if (maxw < w)
|
slouken@1895
|
506 |
w = maxw;
|
slouken@0
|
507 |
|
slouken@1895
|
508 |
srcy = srcrect->y;
|
slouken@1895
|
509 |
h = srcrect->h;
|
slouken@1895
|
510 |
if (srcy < 0) {
|
slouken@1895
|
511 |
h += srcy;
|
slouken@1895
|
512 |
dstrect->y -= srcy;
|
slouken@1895
|
513 |
srcy = 0;
|
slouken@1895
|
514 |
}
|
slouken@1895
|
515 |
maxh = src->h - srcy;
|
slouken@1895
|
516 |
if (maxh < h)
|
slouken@1895
|
517 |
h = maxh;
|
slouken@0
|
518 |
|
slouken@1895
|
519 |
} else {
|
slouken@1895
|
520 |
srcx = srcy = 0;
|
slouken@1895
|
521 |
w = src->w;
|
slouken@1895
|
522 |
h = src->h;
|
slouken@1895
|
523 |
}
|
slouken@1895
|
524 |
|
slouken@1895
|
525 |
/* clip the destination rectangle against the clip rectangle */
|
slouken@1895
|
526 |
{
|
slouken@1895
|
527 |
SDL_Rect *clip = &dst->clip_rect;
|
slouken@1895
|
528 |
int dx, dy;
|
slouken@0
|
529 |
|
slouken@1895
|
530 |
dx = clip->x - dstrect->x;
|
slouken@1895
|
531 |
if (dx > 0) {
|
slouken@1895
|
532 |
w -= dx;
|
slouken@1895
|
533 |
dstrect->x += dx;
|
slouken@1895
|
534 |
srcx += dx;
|
slouken@1895
|
535 |
}
|
slouken@1895
|
536 |
dx = dstrect->x + w - clip->x - clip->w;
|
slouken@1895
|
537 |
if (dx > 0)
|
slouken@1895
|
538 |
w -= dx;
|
slouken@0
|
539 |
|
slouken@1895
|
540 |
dy = clip->y - dstrect->y;
|
slouken@1895
|
541 |
if (dy > 0) {
|
slouken@1895
|
542 |
h -= dy;
|
slouken@1895
|
543 |
dstrect->y += dy;
|
slouken@1895
|
544 |
srcy += dy;
|
slouken@1895
|
545 |
}
|
slouken@1895
|
546 |
dy = dstrect->y + h - clip->y - clip->h;
|
slouken@1895
|
547 |
if (dy > 0)
|
slouken@1895
|
548 |
h -= dy;
|
slouken@1895
|
549 |
}
|
slouken@0
|
550 |
|
slouken@1895
|
551 |
if (w > 0 && h > 0) {
|
slouken@1895
|
552 |
SDL_Rect sr;
|
slouken@1895
|
553 |
sr.x = srcx;
|
slouken@1895
|
554 |
sr.y = srcy;
|
slouken@1895
|
555 |
sr.w = dstrect->w = w;
|
slouken@1895
|
556 |
sr.h = dstrect->h = h;
|
slouken@1895
|
557 |
return SDL_LowerBlit(src, &sr, dst, dstrect);
|
slouken@1895
|
558 |
}
|
slouken@1895
|
559 |
dstrect->w = dstrect->h = 0;
|
slouken@1895
|
560 |
return 0;
|
slouken@0
|
561 |
}
|
slouken@0
|
562 |
|
slouken@1895
|
563 |
static int
|
slouken@1895
|
564 |
SDL_FillRect1(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
|
slouken@532
|
565 |
{
|
slouken@1895
|
566 |
/* FIXME: We have to worry about packing order.. *sigh* */
|
slouken@1895
|
567 |
SDL_SetError("1-bpp rect fill not yet implemented");
|
slouken@1895
|
568 |
return -1;
|
slouken@532
|
569 |
}
|
slouken@532
|
570 |
|
slouken@1895
|
571 |
static int
|
slouken@1895
|
572 |
SDL_FillRect4(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
|
slouken@532
|
573 |
{
|
slouken@1895
|
574 |
/* FIXME: We have to worry about packing order.. *sigh* */
|
slouken@1895
|
575 |
SDL_SetError("4-bpp rect fill not yet implemented");
|
slouken@1895
|
576 |
return -1;
|
slouken@532
|
577 |
}
|
slouken@532
|
578 |
|
slouken@0
|
579 |
/*
|
slouken@0
|
580 |
* This function performs a fast fill of the given rectangle with 'color'
|
slouken@0
|
581 |
*/
|
slouken@1895
|
582 |
int
|
slouken@1895
|
583 |
SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
|
slouken@0
|
584 |
{
|
slouken@1895
|
585 |
int x, y;
|
slouken@1895
|
586 |
Uint8 *row;
|
slouken@0
|
587 |
|
slouken@1895
|
588 |
/* This function doesn't work on surfaces < 8 bpp */
|
slouken@1895
|
589 |
if (dst->format->BitsPerPixel < 8) {
|
slouken@1895
|
590 |
switch (dst->format->BitsPerPixel) {
|
slouken@1895
|
591 |
case 1:
|
slouken@1895
|
592 |
return SDL_FillRect1(dst, dstrect, color);
|
slouken@1895
|
593 |
break;
|
slouken@1895
|
594 |
case 4:
|
slouken@1895
|
595 |
return SDL_FillRect4(dst, dstrect, color);
|
slouken@1895
|
596 |
break;
|
slouken@1895
|
597 |
default:
|
slouken@1895
|
598 |
SDL_SetError("Fill rect on unsupported surface format");
|
slouken@1895
|
599 |
return (-1);
|
slouken@1895
|
600 |
break;
|
slouken@1895
|
601 |
}
|
slouken@1895
|
602 |
}
|
slouken@532
|
603 |
|
slouken@1895
|
604 |
/* If 'dstrect' == NULL, then fill the whole surface */
|
slouken@1895
|
605 |
if (dstrect) {
|
slouken@1895
|
606 |
/* Perform clipping */
|
slouken@1895
|
607 |
if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
|
slouken@1895
|
608 |
return (0);
|
slouken@1895
|
609 |
}
|
slouken@1895
|
610 |
} else {
|
slouken@1895
|
611 |
dstrect = &dst->clip_rect;
|
slouken@1895
|
612 |
}
|
slouken@0
|
613 |
|
slouken@1895
|
614 |
/* Perform software fill */
|
slouken@1895
|
615 |
if (SDL_LockSurface(dst) != 0) {
|
slouken@1895
|
616 |
return (-1);
|
slouken@1895
|
617 |
}
|
slouken@1895
|
618 |
row = (Uint8 *) dst->pixels + dstrect->y * dst->pitch +
|
slouken@1895
|
619 |
dstrect->x * dst->format->BytesPerPixel;
|
slouken@1895
|
620 |
if (dst->format->palette || (color == 0)) {
|
slouken@1895
|
621 |
x = dstrect->w * dst->format->BytesPerPixel;
|
slouken@1895
|
622 |
if (!color && !((uintptr_t) row & 3) && !(x & 3)
|
slouken@1895
|
623 |
&& !(dst->pitch & 3)) {
|
slouken@1895
|
624 |
int n = x >> 2;
|
slouken@1895
|
625 |
for (y = dstrect->h; y; --y) {
|
slouken@1895
|
626 |
SDL_memset4(row, 0, n);
|
slouken@1895
|
627 |
row += dst->pitch;
|
slouken@1895
|
628 |
}
|
slouken@1895
|
629 |
} else {
|
slouken@0
|
630 |
#ifdef __powerpc__
|
slouken@1895
|
631 |
/*
|
slouken@1895
|
632 |
* SDL_memset() on PPC (both glibc and codewarrior) uses
|
slouken@1895
|
633 |
* the dcbz (Data Cache Block Zero) instruction, which
|
slouken@1895
|
634 |
* causes an alignment exception if the destination is
|
slouken@1895
|
635 |
* uncachable, so only use it on software surfaces
|
slouken@1895
|
636 |
*/
|
slouken@1895
|
637 |
if (dst->flags & SDL_HWSURFACE) {
|
slouken@1895
|
638 |
if (dstrect->w >= 8) {
|
slouken@1895
|
639 |
/*
|
slouken@1895
|
640 |
* 64-bit stores are probably most
|
slouken@1895
|
641 |
* efficient to uncached video memory
|
slouken@1895
|
642 |
*/
|
slouken@1895
|
643 |
double fill;
|
slouken@1895
|
644 |
SDL_memset(&fill, color, (sizeof fill));
|
slouken@1895
|
645 |
for (y = dstrect->h; y; y--) {
|
slouken@1895
|
646 |
Uint8 *d = row;
|
slouken@1895
|
647 |
unsigned n = x;
|
slouken@1895
|
648 |
unsigned nn;
|
slouken@1895
|
649 |
Uint8 c = color;
|
slouken@1895
|
650 |
double f = fill;
|
slouken@1895
|
651 |
while ((unsigned long) d & (sizeof(double) - 1)) {
|
slouken@1895
|
652 |
*d++ = c;
|
slouken@1895
|
653 |
n--;
|
slouken@1895
|
654 |
}
|
slouken@1895
|
655 |
nn = n / (sizeof(double) * 4);
|
slouken@1895
|
656 |
while (nn) {
|
slouken@1895
|
657 |
((double *) d)[0] = f;
|
slouken@1895
|
658 |
((double *) d)[1] = f;
|
slouken@1895
|
659 |
((double *) d)[2] = f;
|
slouken@1895
|
660 |
((double *) d)[3] = f;
|
slouken@1895
|
661 |
d += 4 * sizeof(double);
|
slouken@1895
|
662 |
nn--;
|
slouken@1895
|
663 |
}
|
slouken@1895
|
664 |
n &= ~(sizeof(double) * 4 - 1);
|
slouken@1895
|
665 |
nn = n / sizeof(double);
|
slouken@1895
|
666 |
while (nn) {
|
slouken@1895
|
667 |
*(double *) d = f;
|
slouken@1895
|
668 |
d += sizeof(double);
|
slouken@1895
|
669 |
nn--;
|
slouken@1895
|
670 |
}
|
slouken@1895
|
671 |
n &= ~(sizeof(double) - 1);
|
slouken@1895
|
672 |
while (n) {
|
slouken@1895
|
673 |
*d++ = c;
|
slouken@1895
|
674 |
n--;
|
slouken@1895
|
675 |
}
|
slouken@1895
|
676 |
row += dst->pitch;
|
slouken@1895
|
677 |
}
|
slouken@1895
|
678 |
} else {
|
slouken@1895
|
679 |
/* narrow boxes */
|
slouken@1895
|
680 |
for (y = dstrect->h; y; y--) {
|
slouken@1895
|
681 |
Uint8 *d = row;
|
slouken@1895
|
682 |
Uint8 c = color;
|
slouken@1895
|
683 |
int n = x;
|
slouken@1895
|
684 |
while (n) {
|
slouken@1895
|
685 |
*d++ = c;
|
slouken@1895
|
686 |
n--;
|
slouken@1895
|
687 |
}
|
slouken@1895
|
688 |
row += dst->pitch;
|
slouken@1895
|
689 |
}
|
slouken@1895
|
690 |
}
|
slouken@1895
|
691 |
} else
|
slouken@0
|
692 |
#endif /* __powerpc__ */
|
slouken@1895
|
693 |
{
|
slouken@1895
|
694 |
for (y = dstrect->h; y; y--) {
|
slouken@1895
|
695 |
SDL_memset(row, color, x);
|
slouken@1895
|
696 |
row += dst->pitch;
|
slouken@1895
|
697 |
}
|
slouken@1895
|
698 |
}
|
slouken@1895
|
699 |
}
|
slouken@1895
|
700 |
} else {
|
slouken@1895
|
701 |
switch (dst->format->BytesPerPixel) {
|
slouken@1895
|
702 |
case 2:
|
slouken@1895
|
703 |
for (y = dstrect->h; y; --y) {
|
slouken@1895
|
704 |
Uint16 *pixels = (Uint16 *) row;
|
slouken@1895
|
705 |
Uint16 c = (Uint16) color;
|
slouken@1895
|
706 |
Uint32 cc = (Uint32) c << 16 | c;
|
slouken@1895
|
707 |
int n = dstrect->w;
|
slouken@1895
|
708 |
if ((uintptr_t) pixels & 3) {
|
slouken@1895
|
709 |
*pixels++ = c;
|
slouken@1895
|
710 |
n--;
|
slouken@1895
|
711 |
}
|
slouken@1895
|
712 |
if (n >> 1)
|
slouken@1895
|
713 |
SDL_memset4(pixels, cc, n >> 1);
|
slouken@1895
|
714 |
if (n & 1)
|
slouken@1895
|
715 |
pixels[n - 1] = c;
|
slouken@1895
|
716 |
row += dst->pitch;
|
slouken@1895
|
717 |
}
|
slouken@1895
|
718 |
break;
|
slouken@0
|
719 |
|
slouken@1895
|
720 |
case 3:
|
slouken@1895
|
721 |
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
|
slouken@1895
|
722 |
color <<= 8;
|
slouken@1895
|
723 |
#endif
|
slouken@1895
|
724 |
for (y = dstrect->h; y; --y) {
|
slouken@1895
|
725 |
Uint8 *pixels = row;
|
slouken@1895
|
726 |
for (x = dstrect->w; x; --x) {
|
slouken@1895
|
727 |
SDL_memcpy(pixels, &color, 3);
|
slouken@1895
|
728 |
pixels += 3;
|
slouken@1895
|
729 |
}
|
slouken@1895
|
730 |
row += dst->pitch;
|
slouken@1895
|
731 |
}
|
slouken@1895
|
732 |
break;
|
slouken@0
|
733 |
|
slouken@1895
|
734 |
case 4:
|
slouken@1895
|
735 |
for (y = dstrect->h; y; --y) {
|
slouken@1895
|
736 |
SDL_memset4(row, color, dstrect->w);
|
slouken@1895
|
737 |
row += dst->pitch;
|
slouken@1895
|
738 |
}
|
slouken@1895
|
739 |
break;
|
slouken@1895
|
740 |
}
|
slouken@1895
|
741 |
}
|
slouken@1895
|
742 |
SDL_UnlockSurface(dst);
|
slouken@0
|
743 |
|
slouken@1895
|
744 |
/* We're done! */
|
slouken@1895
|
745 |
return (0);
|
slouken@0
|
746 |
}
|
slouken@0
|
747 |
|
slouken@0
|
748 |
/*
|
slouken@0
|
749 |
* Lock a surface to directly access the pixels
|
slouken@0
|
750 |
*/
|
slouken@1895
|
751 |
int
|
slouken@1895
|
752 |
SDL_LockSurface(SDL_Surface * surface)
|
slouken@0
|
753 |
{
|
slouken@1895
|
754 |
if (!surface->locked) {
|
slouken@1895
|
755 |
/* Perform the lock */
|
slouken@1895
|
756 |
if (surface->flags & SDL_HWSURFACE) {
|
slouken@1895
|
757 |
if (SDL_LockTexture
|
slouken@1895
|
758 |
(surface->textureID, NULL, 1, &surface->pixels,
|
slouken@1895
|
759 |
&surface->pitch) < 0) {
|
slouken@1895
|
760 |
return (-1);
|
slouken@1895
|
761 |
}
|
slouken@1895
|
762 |
}
|
slouken@1895
|
763 |
if (surface->flags & SDL_RLEACCEL) {
|
slouken@1895
|
764 |
SDL_UnRLESurface(surface, 1);
|
slouken@1895
|
765 |
surface->flags |= SDL_RLEACCEL; /* save accel'd state */
|
slouken@1895
|
766 |
}
|
slouken@1895
|
767 |
}
|
slouken@0
|
768 |
|
slouken@1895
|
769 |
/* Increment the surface lock count, for recursive locks */
|
slouken@1895
|
770 |
++surface->locked;
|
slouken@0
|
771 |
|
slouken@1895
|
772 |
/* Ready to go.. */
|
slouken@1895
|
773 |
return (0);
|
slouken@0
|
774 |
}
|
slouken@1895
|
775 |
|
slouken@0
|
776 |
/*
|
slouken@0
|
777 |
* Unlock a previously locked surface
|
slouken@0
|
778 |
*/
|
slouken@1895
|
779 |
void
|
slouken@1895
|
780 |
SDL_UnlockSurface(SDL_Surface * surface)
|
slouken@0
|
781 |
{
|
slouken@1895
|
782 |
/* Only perform an unlock if we are locked */
|
slouken@1895
|
783 |
if (!surface->locked || (--surface->locked > 0)) {
|
slouken@1895
|
784 |
return;
|
slouken@1895
|
785 |
}
|
slouken@0
|
786 |
|
slouken@1895
|
787 |
/* Unlock hardware or accelerated surfaces */
|
slouken@1895
|
788 |
if (surface->flags & SDL_HWSURFACE) {
|
slouken@1895
|
789 |
SDL_UnlockTexture(surface->textureID);
|
slouken@1895
|
790 |
}
|
slouken@1895
|
791 |
|
slouken@1895
|
792 |
/* Update RLE encoded surface with new data */
|
slouken@1895
|
793 |
if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
|
slouken@1895
|
794 |
surface->flags &= ~SDL_RLEACCEL; /* stop lying */
|
slouken@1895
|
795 |
SDL_RLESurface(surface);
|
slouken@1895
|
796 |
}
|
slouken@0
|
797 |
}
|
slouken@0
|
798 |
|
slouken@0
|
799 |
/*
|
slouken@0
|
800 |
* Convert a surface into the specified pixel format.
|
slouken@0
|
801 |
*/
|
slouken@1895
|
802 |
SDL_Surface *
|
slouken@1895
|
803 |
SDL_ConvertSurface(SDL_Surface * surface,
|
slouken@1895
|
804 |
SDL_PixelFormat * format, Uint32 flags)
|
slouken@0
|
805 |
{
|
slouken@1895
|
806 |
SDL_Surface *convert;
|
slouken@1895
|
807 |
Uint32 colorkey = 0;
|
slouken@1895
|
808 |
Uint8 alpha = 0;
|
slouken@1895
|
809 |
Uint32 surface_flags;
|
slouken@1895
|
810 |
SDL_Rect bounds;
|
slouken@0
|
811 |
|
slouken@1895
|
812 |
/* Check for empty destination palette! (results in empty image) */
|
slouken@1895
|
813 |
if (format->palette != NULL) {
|
slouken@1895
|
814 |
int i;
|
slouken@1895
|
815 |
for (i = 0; i < format->palette->ncolors; ++i) {
|
slouken@1895
|
816 |
if ((format->palette->colors[i].r != 0xFF) ||
|
slouken@1895
|
817 |
(format->palette->colors[i].g != 0xFF) ||
|
slouken@1895
|
818 |
(format->palette->colors[i].b != 0xFF))
|
slouken@1895
|
819 |
break;
|
slouken@1895
|
820 |
}
|
slouken@1895
|
821 |
if (i == format->palette->ncolors) {
|
slouken@1895
|
822 |
SDL_SetError("Empty destination palette");
|
slouken@1895
|
823 |
return (NULL);
|
slouken@1895
|
824 |
}
|
slouken@1895
|
825 |
}
|
slouken@264
|
826 |
|
slouken@1895
|
827 |
/* Create a new surface with the desired format */
|
slouken@1895
|
828 |
convert = SDL_CreateRGBSurface(flags,
|
slouken@1895
|
829 |
surface->w, surface->h,
|
slouken@1895
|
830 |
format->BitsPerPixel, format->Rmask,
|
slouken@1895
|
831 |
format->Gmask, format->Bmask,
|
slouken@1895
|
832 |
format->Amask);
|
slouken@1895
|
833 |
if (convert == NULL) {
|
slouken@1895
|
834 |
return (NULL);
|
slouken@1895
|
835 |
}
|
slouken@0
|
836 |
|
slouken@1895
|
837 |
/* Copy the palette if any */
|
slouken@1895
|
838 |
if (format->palette && convert->format->palette) {
|
slouken@1895
|
839 |
SDL_memcpy(convert->format->palette->colors,
|
slouken@1895
|
840 |
format->palette->colors,
|
slouken@1895
|
841 |
format->palette->ncolors * sizeof(SDL_Color));
|
slouken@1895
|
842 |
convert->format->palette->ncolors = format->palette->ncolors;
|
slouken@1895
|
843 |
}
|
slouken@0
|
844 |
|
slouken@1895
|
845 |
/* Save the original surface color key and alpha */
|
slouken@1895
|
846 |
surface_flags = surface->flags;
|
slouken@1895
|
847 |
if ((surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
|
slouken@1895
|
848 |
/* Convert colourkeyed surfaces to RGBA if requested */
|
slouken@1895
|
849 |
if ((flags & SDL_SRCCOLORKEY) != SDL_SRCCOLORKEY && format->Amask) {
|
slouken@1895
|
850 |
surface_flags &= ~SDL_SRCCOLORKEY;
|
slouken@1895
|
851 |
} else {
|
slouken@1895
|
852 |
colorkey = surface->format->colorkey;
|
slouken@1895
|
853 |
SDL_SetColorKey(surface, 0, 0);
|
slouken@1895
|
854 |
}
|
slouken@1895
|
855 |
}
|
slouken@1895
|
856 |
if ((surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
|
slouken@1895
|
857 |
/* Copy over the alpha channel to RGBA if requested */
|
slouken@1895
|
858 |
if (format->Amask) {
|
slouken@1895
|
859 |
surface->flags &= ~SDL_SRCALPHA;
|
slouken@1895
|
860 |
} else {
|
slouken@1895
|
861 |
alpha = surface->format->alpha;
|
slouken@1895
|
862 |
SDL_SetAlpha(surface, 0, 0);
|
slouken@1895
|
863 |
}
|
slouken@1895
|
864 |
}
|
slouken@0
|
865 |
|
slouken@1895
|
866 |
/* Copy over the image data */
|
slouken@1895
|
867 |
bounds.x = 0;
|
slouken@1895
|
868 |
bounds.y = 0;
|
slouken@1895
|
869 |
bounds.w = surface->w;
|
slouken@1895
|
870 |
bounds.h = surface->h;
|
slouken@1895
|
871 |
SDL_LowerBlit(surface, &bounds, convert, &bounds);
|
slouken@0
|
872 |
|
slouken@1895
|
873 |
/* Clean up the original surface, and update converted surface */
|
slouken@1895
|
874 |
if (convert != NULL) {
|
slouken@1895
|
875 |
SDL_SetClipRect(convert, &surface->clip_rect);
|
slouken@1895
|
876 |
}
|
slouken@1895
|
877 |
if ((surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
|
slouken@1895
|
878 |
Uint32 cflags = surface_flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
|
slouken@1895
|
879 |
if (convert != NULL) {
|
slouken@1895
|
880 |
Uint8 keyR, keyG, keyB;
|
slouken@0
|
881 |
|
slouken@1895
|
882 |
SDL_GetRGB(colorkey, surface->format, &keyR, &keyG, &keyB);
|
slouken@1895
|
883 |
SDL_SetColorKey(convert, cflags | (flags & SDL_RLEACCELOK),
|
slouken@1895
|
884 |
SDL_MapRGB(convert->format, keyR, keyG, keyB));
|
slouken@1895
|
885 |
}
|
slouken@1895
|
886 |
SDL_SetColorKey(surface, cflags, colorkey);
|
slouken@1895
|
887 |
}
|
slouken@1895
|
888 |
if ((surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
|
slouken@1895
|
889 |
Uint32 aflags = surface_flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
|
slouken@1895
|
890 |
if (convert != NULL) {
|
slouken@1895
|
891 |
SDL_SetAlpha(convert, aflags | (flags & SDL_RLEACCELOK), alpha);
|
slouken@1895
|
892 |
}
|
slouken@1895
|
893 |
if (format->Amask) {
|
slouken@1895
|
894 |
surface->flags |= SDL_SRCALPHA;
|
slouken@1895
|
895 |
} else {
|
slouken@1895
|
896 |
SDL_SetAlpha(surface, aflags, alpha);
|
slouken@1895
|
897 |
}
|
slouken@1895
|
898 |
}
|
slouken@0
|
899 |
|
slouken@1895
|
900 |
/* We're ready to go! */
|
slouken@1895
|
901 |
return (convert);
|
slouken@0
|
902 |
}
|
slouken@0
|
903 |
|
slouken@0
|
904 |
/*
|
slouken@0
|
905 |
* Free a surface created by the above function.
|
slouken@0
|
906 |
*/
|
slouken@1895
|
907 |
void
|
slouken@1895
|
908 |
SDL_FreeSurface(SDL_Surface * surface)
|
slouken@0
|
909 |
{
|
slouken@1895
|
910 |
if (surface == NULL) {
|
slouken@1895
|
911 |
return;
|
slouken@1895
|
912 |
}
|
slouken@1895
|
913 |
if (--surface->refcount > 0) {
|
slouken@1895
|
914 |
return;
|
slouken@1895
|
915 |
}
|
slouken@1895
|
916 |
while (surface->locked > 0) {
|
slouken@1895
|
917 |
SDL_UnlockSurface(surface);
|
slouken@1895
|
918 |
}
|
slouken@1895
|
919 |
if (surface->flags & SDL_RLEACCEL) {
|
slouken@1895
|
920 |
SDL_UnRLESurface(surface, 0);
|
slouken@1895
|
921 |
}
|
slouken@1895
|
922 |
if (surface->format) {
|
slouken@1895
|
923 |
SDL_SetSurfacePalette(surface, NULL);
|
slouken@1895
|
924 |
SDL_FreeFormat(surface->format);
|
slouken@1895
|
925 |
surface->format = NULL;
|
slouken@1895
|
926 |
}
|
slouken@1895
|
927 |
if (surface->map != NULL) {
|
slouken@1895
|
928 |
SDL_FreeBlitMap(surface->map);
|
slouken@1895
|
929 |
surface->map = NULL;
|
slouken@1895
|
930 |
}
|
slouken@1895
|
931 |
/* Should we destroy the texture too?
|
slouken@1895
|
932 |
if (surface->textureID) {
|
slouken@1895
|
933 |
SDL_DestroyTexture(surface->textureID);
|
slouken@1895
|
934 |
}
|
slouken@1895
|
935 |
*/
|
slouken@1895
|
936 |
if (surface->pixels && ((surface->flags & SDL_PREALLOC) != SDL_PREALLOC)) {
|
slouken@1895
|
937 |
SDL_free(surface->pixels);
|
slouken@1895
|
938 |
}
|
slouken@1895
|
939 |
SDL_free(surface);
|
slouken@0
|
940 |
#ifdef CHECK_LEAKS
|
slouken@1895
|
941 |
--surfaces_allocated;
|
slouken@0
|
942 |
#endif
|
slouken@0
|
943 |
}
|
slouken@1895
|
944 |
|
slouken@1895
|
945 |
/* vi: set ts=4 sw=4 expandtab: */
|