Mercurial > sdl-ios-xcode
view src/video/SDL_blit.c @ 3099:82e60908fab1
Date: Mon, 23 Mar 2009 09:17:24 +0200
From: "Mike Gorchak"
Subject: New QNX patches
Please apply patch qnx4.diff, which is attached. What has been done:
1)Added back OpenGL ES renderer for QNX target. Added few corrections to
OpenGL ES renderer to let it work under QNX. OpenGL ES renderer do not
support textures under QNX, so I think some additional work must be done.
2) Added GL_OES_query_matrix extension to SDL_opengles.h header file, which
required by OpenGL ES 1.1 specification.
3) Added attribute clearing at the entrance of function
SDL_GL_GetAttribure(). Added error checking into the function
SDL_GL_GetAttribure(), because some attributes can't be obtained in OpenGL
ES 1.0.
4) Porting testdyngles to OpenGL ES 1.0 (1.1 has glColor4ub() and
glColor4f() functions, but 1.0 has glColor4f() only).
5) Added error checking after obtaining attributes using
SDL_GL_GetAttribute() function to the testgl2 and testgles.
6) Small correction to testmultiaudio with printing errors.
7) Added software and accelerated OpenGL ES 1.0 support into the QNX GF
driver.
Please remove ./src/audio/nto directory - it will not be used anymore.
Please create ./src/audio/qsa directory and add content of the archive
qsa.tar.gz into this directory. I rewrote some sound code, added support for
multiple audio cards, enumeration, etc. Added initial support for capture.
As far as I can understand SDL 1.3 is not supporting audio capture right now
? Sam, Am I right ? Or audio capture must be supported through the
PlayDevice routine ?
And last, please put file SDL_gf_opengles.c to the ./src/video/qnxgf
directory. It is OpenGL ES 1.1 emulation layer for some functions, which are
not supported by OpenGL ES 1.0.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 24 Mar 2009 10:33:12 +0000 |
parents | 99210400e8b9 |
children | f7b03b6838cb |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #include "SDL_video.h" #include "SDL_sysvideo.h" #include "SDL_blit.h" #include "SDL_blit_auto.h" #include "SDL_blit_copy.h" #include "SDL_blit_slow.h" #include "SDL_RLEaccel_c.h" #include "SDL_pixels_c.h" /* The general purpose software blit routine */ static int SDL_SoftBlit(SDL_Surface * src, SDL_Rect * srcrect, SDL_Surface * dst, SDL_Rect * dstrect) { int okay; int src_locked; int dst_locked; /* Everything is okay at the beginning... */ okay = 1; /* Lock the destination if it's in hardware */ dst_locked = 0; if (SDL_MUSTLOCK(dst)) { if (SDL_LockSurface(dst) < 0) { okay = 0; } else { dst_locked = 1; } } /* Lock the source if it's in hardware */ src_locked = 0; if (SDL_MUSTLOCK(src)) { if (SDL_LockSurface(src) < 0) { okay = 0; } else { src_locked = 1; } } /* Set up source and destination buffer pointers, and BLIT! */ if (okay && srcrect->w && srcrect->h) { SDL_BlitFunc RunBlit; SDL_BlitInfo *info = &src->map->info; /* Set up the blit information */ info->src = (Uint8 *) src->pixels + (Uint16) srcrect->y * src->pitch + (Uint16) srcrect->x * info->src_fmt->BytesPerPixel; info->src_w = srcrect->w; info->src_h = srcrect->h; info->src_pitch = src->pitch; info->src_skip = info->src_pitch - info->src_w * info->src_fmt->BytesPerPixel; info->dst = (Uint8 *) dst->pixels + (Uint16) dstrect->y * dst->pitch + (Uint16) dstrect->x * info->dst_fmt->BytesPerPixel; info->dst_w = dstrect->w; info->dst_h = dstrect->h; info->dst_pitch = dst->pitch; info->dst_skip = info->dst_pitch - info->dst_w * info->dst_fmt->BytesPerPixel; RunBlit = (SDL_BlitFunc) src->map->data; /* Run the actual software blit */ RunBlit(info); } /* We need to unlock the surfaces if they're locked */ if (dst_locked) { SDL_UnlockSurface(dst); } if (src_locked) { SDL_UnlockSurface(src); } /* Blit is done! */ return (okay ? 0 : -1); } #ifdef __MACOSX__ #include <sys/sysctl.h> static SDL_bool SDL_UseAltivecPrefetch() { const char key[] = "hw.l3cachesize"; u_int64_t result = 0; size_t typeSize = sizeof(result); if (sysctlbyname(key, &result, &typeSize, NULL, 0) == 0 && result > 0) { return SDL_TRUE; } else { return SDL_FALSE; } } #else static SDL_bool SDL_UseAltivecPrefetch() { /* Just guess G4 */ return SDL_TRUE; } #endif /* __MACOSX__ */ static SDL_BlitFunc SDL_ChooseBlitFunc(Uint32 src_format, Uint32 dst_format, int flags, SDL_BlitFuncEntry * entries) { int i, flagcheck; static Uint32 features = 0xffffffff; /* Get the available CPU features */ if (features == 0xffffffff) { const char *override = SDL_getenv("SDL_BLIT_CPU_FEATURES"); features = SDL_CPU_ANY; /* Allow an override for testing .. */ if (override) { SDL_sscanf(override, "%u", &features); } else { if (SDL_HasMMX()) { features |= SDL_CPU_MMX; } if (SDL_Has3DNow()) { features |= SDL_CPU_3DNOW; } if (SDL_HasSSE()) { features |= SDL_CPU_SSE; } if (SDL_HasSSE2()) { features |= SDL_CPU_SSE2; } if (SDL_HasAltiVec()) { if (SDL_UseAltivecPrefetch()) { features |= SDL_CPU_ALTIVEC_PREFETCH; } else { features |= SDL_CPU_ALTIVEC_NOPREFETCH; } } } } for (i = 0; entries[i].func; ++i) { /* Check for matching pixel formats */ if (src_format != entries[i].src_format) { continue; } if (dst_format != entries[i].dst_format) { continue; } /* Check modulation flags */ flagcheck = (flags & (SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA)); if ((flagcheck & entries[i].flags) != flagcheck) { continue; } /* Check blend flags */ flagcheck = (flags & (SDL_COPY_MASK | SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD)); if ((flagcheck & entries[i].flags) != flagcheck) { continue; } /* Check colorkey flag */ flagcheck = (flags & SDL_COPY_COLORKEY); if ((flagcheck & entries[i].flags) != flagcheck) { continue; } /* Check scaling flags */ flagcheck = (flags & SDL_COPY_NEAREST); if ((flagcheck & entries[i].flags) != flagcheck) { continue; } /* Check CPU features */ flagcheck = entries[i].cpu; if ((flagcheck & features) != flagcheck) { continue; } /* We found the best one! */ return entries[i].func; } return NULL; } /* Figure out which of many blit routines to set up on a surface */ int SDL_CalculateBlit(SDL_Surface * surface) { SDL_BlitFunc blit = NULL; SDL_BlitMap *map = surface->map; SDL_Surface *dst = map->dst; /* Clean everything out to start */ if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) { SDL_UnRLESurface(surface, 1); } map->blit = SDL_SoftBlit; map->info.src_fmt = surface->format; map->info.src_pitch = surface->pitch; map->info.dst_fmt = dst->format; map->info.dst_pitch = dst->pitch; /* See if we can do RLE acceleration */ if (map->info.flags & SDL_COPY_RLE_DESIRED) { if (SDL_RLESurface(surface) == 0) { return 0; } } /* Choose a standard blit function */ if (map->identity && !(map->info.flags & ~SDL_COPY_RLE_DESIRED)) { /* Handle overlapping blits on the same surface */ if (surface == dst) { blit = SDL_BlitCopyOverlap; } else { blit = SDL_BlitCopy; } } else if (surface->format->BitsPerPixel < 8) { blit = SDL_CalculateBlit0(surface); } else if (surface->format->BytesPerPixel == 1) { blit = SDL_CalculateBlit1(surface); } else if (map->info.flags & SDL_COPY_BLEND) { blit = SDL_CalculateBlitA(surface); } else { blit = SDL_CalculateBlitN(surface); } if (blit == NULL) { Uint32 src_format = SDL_MasksToPixelFormatEnum(surface->format->BitsPerPixel, surface->format->Rmask, surface->format->Gmask, surface->format->Bmask, surface->format->Amask); Uint32 dst_format = SDL_MasksToPixelFormatEnum(dst->format->BitsPerPixel, dst->format->Rmask, dst->format->Gmask, dst->format->Bmask, dst->format->Amask); blit = SDL_ChooseBlitFunc(src_format, dst_format, map->info.flags, SDL_GeneratedBlitFuncTable); } #ifndef TEST_SLOW_BLIT if (blit == NULL) #endif { if (surface->format->BytesPerPixel > 1 && dst->format->BytesPerPixel > 1) { blit = SDL_Blit_Slow; } } map->data = blit; /* Make sure we have a blit function */ if (blit == NULL) { SDL_InvalidateMap(map); SDL_SetError("Blit combination not supported"); return (-1); } return (0); } /* vi: set ts=4 sw=4 expandtab: */