sdl-ios-xcode: src/video/SDL_stretch.c annotate

annotate src/video/SDL_stretch.c @ 4447:947201caa46e

Added automated test to Xcode project plus needed changes to SDL_RWFromFile to be OS X bundle aware. The Mac OS X project has a new target called testsdl which builds the automated test. I looked at using Xcode's native unit test support, but the impedance mismatch between the existing automated test structure and Apple's was more than I could handle. As such, the testsdl application is a full blown proper OS X application, which means it is a self-contained .app bundle. This immediately revealed some problems from the automated test. The largest problem was the assumption about the current working directory and where to find resources. (I suspect Windows may have a similar problem depending on circumstance.) To open resources, the test was looking in directories relative to the SDL source directory, but this will not work well with self-contained .app bundles and Xcode which can place its built applications almost anywhere. And for real-world situations, this is pretty useless anyway. So I modified SDL_RWFromFile to do special things on OS X. First, it will look for a file in the .app bundle. If not found, it will fallback and just call fopen as it used to do. I also had to modify the automated test itself because it had a contrieved test which called fopen directly to do read from an existing FILE pointer. In addition, there was a write test. Since a .app bundle is likely going to be read-only, I added a special case for OS X to write to NSTemporaryDirectory. I expect these changes should work for both Mac and iPhone OS (which includes iPad). I will update the iPhone Xcode project next. Finally, FYI, the X11 automated test seems to be failing. Below is my output. Pending breakpoint 4 - "-[NSException raise]" resolved Platform : All tests successful (2) SDL_RWops : All tests successful (5) Rect : All tests successful (1) SDL_Surface : All tests successful (6) Rendering with cocoa driver : All tests successful (3) Assert Failed! Blit output not the same. Test Case 'Renderer x11' Test Suite 'Rendering with x11 driver' Last SDL error '' Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Rendering with x11 driver : Failed 1 out of 4 testcases! Rendering with dummy driver : All tests successful (3) SDL_Audio : All tests successful (1) Tests run with SDL 1.3.0 revision 1095906 System is running Mac OS X and is little endian

author	Eric Wing <ewing . public \|-at-\| gmail . com>
date	Sat, 08 May 2010 00:54:22 -0700
parents	f7b03b6838cb
children	791b3256fb22

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3406 diff changeset	3 Copyright (C) 1997-2010 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	4
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1234 diff changeset	6 modify it under the terms of the GNU Lesser General Public
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1234 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	9
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1234 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1234 diff changeset	15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1234 diff changeset	16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1234 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 0 diff changeset	20 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	22 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 /* This a stretch blit implementation based on ideas given to me by
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25 Tomasz Cejner - thanks! :)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27 April 27, 2000 - Sam Lantinga
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30 #include "SDL_video.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 #include "SDL_blit.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33 /* This isn't ready for general consumption yet - it should be folded
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 into the general blitting mechanism.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	37 #if ((defined(_MFC_VER) && defined(_M_IX86)/* && !defined(_WIN32_WCE) still needed? */) \|\| \
1442 e3242177fe4a Updated OS/2 build, yay! Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	38 defined(__WATCOMC__) \|\| \
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	39 (defined(__GNUC__) && defined(__i386__))) && SDL_ASSEMBLY_ROUTINES
3406 8ae607392409 There's a bug with gcc 4.4.1 and -O2 where srcp doesn't get the correct value after the first scanline. Ugh. Sam Lantinga <slouken@libsdl.org> parents: 3405 diff changeset	40 /* There's a bug with gcc 4.4.1 and -O2 where srcp doesn't get the correct
8ae607392409 There's a bug with gcc 4.4.1 and -O2 where srcp doesn't get the correct value after the first scanline. Ugh. Sam Lantinga <slouken@libsdl.org> parents: 3405 diff changeset	41 * value after the first scanline. FIXME? */
8ae607392409 There's a bug with gcc 4.4.1 and -O2 where srcp doesn't get the correct value after the first scanline. Ugh. Sam Lantinga <slouken@libsdl.org> parents: 3405 diff changeset	42 /#define USE_ASM_STRETCH/
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	43 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 #ifdef USE_ASM_STRETCH
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	47 #ifdef HAVE_MPROTECT
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	48 #include <sys/types.h>
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	49 #include <sys/mman.h>
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	50 #endif
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	51 #ifdef __GNUC__
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	52 #define PAGE_ALIGNED __attribute__((__aligned__(4096)))
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	53 #else
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	54 #define PAGE_ALIGNED
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	55 #endif
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	56
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	57 #if defined(_M_IX86) \|\| defined(i386)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	58 #define PREFIX16 0x66
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	59 #define STORE_BYTE 0xAA
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	60 #define STORE_WORD 0xAB
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	61 #define LOAD_BYTE 0xAC
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	62 #define LOAD_WORD 0xAD
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	63 #define RETURN 0xC3
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	64 #else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	65 #error Need assembly opcodes for this architecture
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	66 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	67
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	68 static unsigned char copy_row[4096] PAGE_ALIGNED;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	69
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	70 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	71 generate_rowbytes(int src_w, int dst_w, int bpp)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	72 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	73 static struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	74 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	75 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	76 int src_w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	77 int dst_w;
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	78 int status;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	79 } last;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	80
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	81 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	82 int pos, inc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	83 unsigned char *eip;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	84 unsigned char load, store;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	85
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	86 /* See if we need to regenerate the copy buffer */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	87 if ((src_w == last.src_w) && (dst_w == last.dst_w) && (bpp == last.bpp)) {
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	88 return (last.status);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	89 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	90 last.bpp = bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	91 last.src_w = src_w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	92 last.dst_w = dst_w;
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	93 last.status = -1;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	94
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	95 switch (bpp) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	96 case 1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	97 load = LOAD_BYTE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	98 store = STORE_BYTE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	99 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	100 case 2:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	101 case 4:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	102 load = LOAD_WORD;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	103 store = STORE_WORD;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	104 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	105 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	106 SDL_SetError("ASM stretch of %d bytes isn't supported\n", bpp);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	107 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	108 }
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	109 #ifdef HAVE_MPROTECT
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	110 /* Make the code writeable */
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	111 if (mprotect(copy_row, sizeof(copy_row), PROT_READ \| PROT_WRITE) < 0) {
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	112 SDL_SetError("Couldn't make copy buffer writeable");
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	113 return (-1);
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	114 }
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	115 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	116 pos = 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	117 inc = (src_w << 16) / dst_w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	118 eip = copy_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	119 for (i = 0; i < dst_w; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	120 while (pos >= 0x10000L) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	121 if (bpp == 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	122 *eip++ = PREFIX16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	123 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	124 *eip++ = load;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	125 pos -= 0x10000L;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	126 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	127 if (bpp == 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	128 *eip++ = PREFIX16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	129 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	130 *eip++ = store;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	131 pos += inc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	132 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	133 *eip++ = RETURN;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	134
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	135 /* Verify that we didn't overflow (too late!!!) */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	136 if (eip > (copy_row + sizeof(copy_row))) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	137 SDL_SetError("Copy buffer overflow");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	138 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	139 }
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	140 #ifdef HAVE_MPROTECT
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	141 /* Make the code executable but not writeable */
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	142 if (mprotect(copy_row, sizeof(copy_row), PROT_READ \| PROT_EXEC) < 0) {
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	143 SDL_SetError("Couldn't make copy buffer executable");
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	144 return (-1);
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	145 }
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	146 #endif
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	147 last.status = 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	148 return (0);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	149 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	150
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	151 #endif /* USE_ASM_STRETCH */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	152
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	153 #define DEFINE_COPY_ROW(name, type) \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	154 void name(type src, int src_w, type dst, int dst_w) \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	155 { \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	156 int i; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	157 int pos, inc; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	158 type pixel = 0; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	159 \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	160 pos = 0x10000; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	161 inc = (src_w << 16) / dst_w; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	162 for ( i=dst_w; i>0; --i ) { \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	163 while ( pos >= 0x10000L ) { \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	164 pixel = *src++; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	165 pos -= 0x10000L; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	166 } \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	167 *dst++ = pixel; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	168 pos += inc; \
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	169 } \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	171 /* INDENT-OFF */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 DEFINE_COPY_ROW(copy_row1, Uint8)
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	173 DEFINE_COPY_ROW(copy_row2, Uint16)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	174 DEFINE_COPY_ROW(copy_row4, Uint32)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	175 /* INDENT-ON */
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	176
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	177 /* The ASM code doesn't handle 24-bpp stretch blits */
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	178 void
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	179 copy_row3(Uint8 * src, int src_w, Uint8 * dst, int dst_w)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	180 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	181 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	182 int pos, inc;
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	183 Uint8 pixel[3] = { 0, 0, 0 };
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	184
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	185 pos = 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	186 inc = (src_w << 16) / dst_w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	187 for (i = dst_w; i > 0; --i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	188 while (pos >= 0x10000L) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	189 pixel[0] = *src++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	190 pixel[1] = *src++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	191 pixel[2] = *src++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	192 pos -= 0x10000L;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	193 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	194 *dst++ = pixel[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	195 *dst++ = pixel[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	196 *dst++ = pixel[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	197 pos += inc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	198 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	199 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	200
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	201 /* Perform a stretch blit between two surfaces of the same format.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	202 NOTE: This function is not safe to call from multiple threads!
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	203 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	204 int
2828 7e5ff6cd05bf Added very slow software scaling to the X11 renderer Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	205 SDL_SoftStretch(SDL_Surface * src, const SDL_Rect * srcrect,
7e5ff6cd05bf Added very slow software scaling to the X11 renderer Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	206 SDL_Surface * dst, const SDL_Rect * dstrect)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	207 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	208 int src_locked;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	209 int dst_locked;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	210 int pos, inc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	211 int dst_width;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	212 int dst_maxrow;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	213 int src_row, dst_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	214 Uint8 *srcp = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	215 Uint8 *dstp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	216 SDL_Rect full_src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	217 SDL_Rect full_dst;
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	218 #ifdef USE_ASM_STRETCH
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	219 SDL_bool use_asm = SDL_TRUE;
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	220 #ifdef __GNUC__
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	221 int u1, u2;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	222 #endif
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	223 #endif /* USE_ASM_STRETCH */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	224 const int bpp = dst->format->BytesPerPixel;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	225
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	226 if (src->format->BitsPerPixel != dst->format->BitsPerPixel) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	227 SDL_SetError("Only works with same format surfaces");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	228 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	229 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	230
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	231 /* Verify the blit rectangles */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	232 if (srcrect) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	233 if ((srcrect->x < 0) \|\| (srcrect->y < 0) \|\|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	234 ((srcrect->x + srcrect->w) > src->w) \|\|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	235 ((srcrect->y + srcrect->h) > src->h)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	236 SDL_SetError("Invalid source blit rectangle");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	237 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	238 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	239 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	240 full_src.x = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	241 full_src.y = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	242 full_src.w = src->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	243 full_src.h = src->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	244 srcrect = &full_src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	245 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	246 if (dstrect) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	247 if ((dstrect->x < 0) \|\| (dstrect->y < 0) \|\|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	248 ((dstrect->x + dstrect->w) > dst->w) \|\|
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	249 ((dstrect->y + dstrect->h) > dst->h)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	250 SDL_SetError("Invalid destination blit rectangle");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	251 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	252 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	253 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	254 full_dst.x = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	255 full_dst.y = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	256 full_dst.w = dst->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	257 full_dst.h = dst->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	258 dstrect = &full_dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	259 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	260
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	261 /* Lock the destination if it's in hardware */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	262 dst_locked = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	263 if (SDL_MUSTLOCK(dst)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	264 if (SDL_LockSurface(dst) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	265 SDL_SetError("Unable to lock destination surface");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	266 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	267 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	268 dst_locked = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	269 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	270 /* Lock the source if it's in hardware */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	271 src_locked = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	272 if (SDL_MUSTLOCK(src)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	273 if (SDL_LockSurface(src) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	274 if (dst_locked) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	275 SDL_UnlockSurface(dst);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	276 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	277 SDL_SetError("Unable to lock source surface");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	278 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	279 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	280 src_locked = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	281 }
894 1d1a823904d8 Don't crash if the stretch routines are used on hardware surfaces Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	282
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	283 /* Set up the data... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	284 pos = 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	285 inc = (srcrect->h << 16) / dstrect->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	286 src_row = srcrect->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	287 dst_row = dstrect->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	288 dst_width = dstrect->w * bpp;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	290 #ifdef USE_ASM_STRETCH
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	291 /* Write the opcodes for this stretch */
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	292 if ((bpp == 3) \|\| (generate_rowbytes(srcrect->w, dstrect->w, bpp) < 0)) {
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	293 use_asm = SDL_FALSE;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	294 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	295 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	297 /* Perform the stretch blit */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	298 for (dst_maxrow = dst_row + dstrect->h; dst_row < dst_maxrow; ++dst_row) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	299 dstp = (Uint8 ) dst->pixels + (dst_row dst->pitch)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	300 + (dstrect->x * bpp);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	301 while (pos >= 0x10000L) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	302 srcp = (Uint8 ) src->pixels + (src_row src->pitch)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	303 + (srcrect->x * bpp);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	304 ++src_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	305 pos -= 0x10000L;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	306 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	307 #ifdef USE_ASM_STRETCH
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	308 if (use_asm) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	309 #ifdef __GNUC__
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	310 __asm__ __volatile__("call *%4":"=&D"(u1), "=&S"(u2)
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	311 :"0"(dstp), "1"(srcp), "r"(copy_row)
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	312 :"memory");
1442 e3242177fe4a Updated OS/2 build, yay! Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	313 #elif defined(_MSC_VER) \|\| defined(__WATCOMC__)
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	314 /* INDENT-OFF */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	315 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	316 void *code = copy_row;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	317 __asm {
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	318 push edi
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	319 push esi
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	320 mov edi, dstp
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	321 mov esi, srcp
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	322 call dword ptr code
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	323 pop esi
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	324 pop edi
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	325 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	326 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	327 /* INDENT-ON */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	328 #else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 #error Need inline assembly for this compiler
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330 #endif
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	331 } else
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	332 #endif
3405 d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	333 switch (bpp) {
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	334 case 1:
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	335 copy_row1(srcp, srcrect->w, dstp, dstrect->w);
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	336 break;
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	337 case 2:
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	338 copy_row2((Uint16 *) srcp, srcrect->w,
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	339 (Uint16 *) dstp, dstrect->w);
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	340 break;
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	341 case 3:
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	342 copy_row3(srcp, srcrect->w, dstp, dstrect->w);
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	343 break;
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	344 case 4:
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	345 copy_row4((Uint32 *) srcp, srcrect->w,
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	346 (Uint32 *) dstp, dstrect->w);
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	347 break;
d5f2dd33f4eb Merged improvements to SDL_SoftStretch() from SDL 1.2 Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	348 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	349 pos += inc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	350 }
894 1d1a823904d8 Don't crash if the stretch routines are used on hardware surfaces Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	351
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	352 /* We need to unlock the surfaces if they're locked */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	353 if (dst_locked) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	354 SDL_UnlockSurface(dst);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	355 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	356 if (src_locked) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	357 SDL_UnlockSurface(src);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	358 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	359 return (0);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1849 diff changeset	362 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/video/SDL_stretch.c @ 4447:947201caa46e