diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/ataricommon/SDL_atarigl.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/ataricommon/SDL_atarigl.c | 1088 |
1 files changed, 0 insertions, 1088 deletions
diff --git a/distrib/sdl-1.2.12/src/video/ataricommon/SDL_atarigl.c b/distrib/sdl-1.2.12/src/video/ataricommon/SDL_atarigl.c deleted file mode 100644 index 9cc8d22..0000000 --- a/distrib/sdl-1.2.12/src/video/ataricommon/SDL_atarigl.c +++ /dev/null @@ -1,1088 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2004 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public - License as published by the Free Software Foundation; either - version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with this library; if not, write to the Free - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -/* Atari OSMesa.ldg implementation of SDL OpenGL support */ - -/*--- Includes ---*/ - -#if SDL_VIDEO_OPENGL -#include <GL/osmesa.h> -#endif - -#include <mint/osbind.h> - -#include "SDL_endian.h" -#include "SDL_video.h" -#include "SDL_atarigl_c.h" -#if SDL_VIDEO_OPENGL_OSMESA_DYNAMIC -#include "SDL_loadso.h" -#endif - -/*--- Defines ---*/ - -#define PATH_OSMESA_LDG "osmesa.ldg" -#define PATH_MESAGL_LDG "mesa_gl.ldg" -#define PATH_TINYGL_LDG "tiny_gl.ldg" - -#define VDI_RGB 0xf - -/*--- Functions prototypes ---*/ - -static void SDL_AtariGL_UnloadLibrary(_THIS); - -#if SDL_VIDEO_OPENGL -static void CopyShadowNull(_THIS, SDL_Surface *surface); -static void CopyShadowDirect(_THIS, SDL_Surface *surface); -static void CopyShadowRGBTo555(_THIS, SDL_Surface *surface); -static void CopyShadowRGBTo565(_THIS, SDL_Surface *surface); -static void CopyShadowRGBSwap(_THIS, SDL_Surface *surface); -static void CopyShadowRGBToARGB(_THIS, SDL_Surface *surface); -static void CopyShadowRGBToABGR(_THIS, SDL_Surface *surface); -static void CopyShadowRGBToBGRA(_THIS, SDL_Surface *surface); -static void CopyShadowRGBToRGBA(_THIS, SDL_Surface *surface); -static void CopyShadow8888To555(_THIS, SDL_Surface *surface); -static void CopyShadow8888To565(_THIS, SDL_Surface *surface); - -static void ConvertNull(_THIS, SDL_Surface *surface); -static void Convert565To555be(_THIS, SDL_Surface *surface); -static void Convert565To555le(_THIS, SDL_Surface *surface); -static void Convert565le(_THIS, SDL_Surface *surface); -static void ConvertBGRAToABGR(_THIS, SDL_Surface *surface); - -static int InitNew(_THIS, SDL_Surface *current); -static int InitOld(_THIS, SDL_Surface *current); -#endif - -/*--- Public functions ---*/ - -int SDL_AtariGL_Init(_THIS, SDL_Surface *current) -{ -#if SDL_VIDEO_OPENGL - if (gl_oldmesa) { - gl_active = InitOld(this, current); - } else { - gl_active = InitNew(this, current); - } -#endif - - return (gl_active); -} - -void SDL_AtariGL_Quit(_THIS, SDL_bool unload) -{ -#if SDL_VIDEO_OPENGL - if (gl_oldmesa) { - /* Old mesa implementations */ - if (this->gl_data->OSMesaDestroyLDG) { - this->gl_data->OSMesaDestroyLDG(); - } - if (gl_shadow) { - Mfree(gl_shadow); - gl_shadow = NULL; - } - } else { - /* New mesa implementation */ - if (gl_ctx) { - if (this->gl_data->OSMesaDestroyContext) { - this->gl_data->OSMesaDestroyContext(gl_ctx); - } - gl_ctx = NULL; - } - } - - if (unload) { - SDL_AtariGL_UnloadLibrary(this); - } - -#endif /* SDL_VIDEO_OPENGL */ - gl_active = 0; -} - -int SDL_AtariGL_LoadLibrary(_THIS, const char *path) -{ -#if SDL_VIDEO_OPENGL - -#if SDL_VIDEO_OPENGL_OSMESA_DYNAMIC - void *handle; - SDL_bool cancel_load; - - if (gl_active) { - SDL_SetError("OpenGL context already created"); - return -1; - } - - /* Unload previous driver */ - SDL_AtariGL_UnloadLibrary(this); - - /* Load library given by path */ - handle = SDL_LoadObject(path); - if (handle == NULL) { - /* Try to load another one */ - path = SDL_getenv("SDL_VIDEO_GL_DRIVER"); - if ( path != NULL ) { - handle = SDL_LoadObject(path); - } - - /* If it does not work, try some other */ - if (handle == NULL) { - path = PATH_OSMESA_LDG; - handle = SDL_LoadObject(path); - } - - if (handle == NULL) { - path = PATH_MESAGL_LDG; - handle = SDL_LoadObject(path); - } - - if (handle == NULL) { - path = PATH_TINYGL_LDG; - handle = SDL_LoadObject(path); - } - } - - if (handle == NULL) { - SDL_SetError("Could not load OpenGL library"); - return -1; - } - - this->gl_data->glGetIntegerv = SDL_LoadFunction(handle, "glGetIntegerv"); - this->gl_data->glFinish = SDL_LoadFunction(handle, "glFinish"); - this->gl_data->glFlush = SDL_LoadFunction(handle, "glFlush"); - - cancel_load = SDL_FALSE; - if (this->gl_data->glGetIntegerv == NULL) { - cancel_load = SDL_TRUE; - } else { - /* We need either glFinish (OSMesa) or glFlush (TinyGL) */ - if ((this->gl_data->glFinish == NULL) && - (this->gl_data->glFlush == NULL)) { - cancel_load = SDL_TRUE; - } - } - if (cancel_load) { - SDL_SetError("Could not retrieve OpenGL functions"); - SDL_UnloadObject(handle); - /* Restore pointers to static library */ - SDL_AtariGL_InitPointers(this); - return -1; - } - - /* Load functions pointers (osmesa.ldg) */ - this->gl_data->OSMesaCreateContextExt = SDL_LoadFunction(handle, "OSMesaCreateContextExt"); - this->gl_data->OSMesaDestroyContext = SDL_LoadFunction(handle, "OSMesaDestroyContext"); - this->gl_data->OSMesaMakeCurrent = SDL_LoadFunction(handle, "OSMesaMakeCurrent"); - this->gl_data->OSMesaPixelStore = SDL_LoadFunction(handle, "OSMesaPixelStore"); - this->gl_data->OSMesaGetProcAddress = SDL_LoadFunction(handle, "OSMesaGetProcAddress"); - - /* Load old functions pointers (mesa_gl.ldg, tiny_gl.ldg) */ - this->gl_data->OSMesaCreateLDG = SDL_LoadFunction(handle, "OSMesaCreateLDG"); - this->gl_data->OSMesaDestroyLDG = SDL_LoadFunction(handle, "OSMesaDestroyLDG"); - - gl_oldmesa = 0; - - if ( (this->gl_data->OSMesaCreateContextExt == NULL) || - (this->gl_data->OSMesaDestroyContext == NULL) || - (this->gl_data->OSMesaMakeCurrent == NULL) || - (this->gl_data->OSMesaPixelStore == NULL) || - (this->gl_data->OSMesaGetProcAddress == NULL)) { - /* Hum, maybe old library ? */ - if ( (this->gl_data->OSMesaCreateLDG == NULL) || - (this->gl_data->OSMesaDestroyLDG == NULL)) { - SDL_SetError("Could not retrieve OSMesa functions"); - SDL_UnloadObject(handle); - /* Restore pointers to static library */ - SDL_AtariGL_InitPointers(this); - return -1; - } else { - gl_oldmesa = 1; - } - } - - this->gl_config.dll_handle = handle; - if ( path ) { - SDL_strlcpy(this->gl_config.driver_path, path, - SDL_arraysize(this->gl_config.driver_path)); - } else { - *this->gl_config.driver_path = '\0'; - } - -#endif - this->gl_config.driver_loaded = 1; - - return 0; -#else - return -1; -#endif -} - -void *SDL_AtariGL_GetProcAddress(_THIS, const char *proc) -{ - void *func = NULL; -#if SDL_VIDEO_OPENGL - - if (this->gl_config.dll_handle) { - func = SDL_LoadFunction(this->gl_config.dll_handle, (void *)proc); - } else if (this->gl_data->OSMesaGetProcAddress) { - func = this->gl_data->OSMesaGetProcAddress(proc); - } - -#endif - return func; -} - -int SDL_AtariGL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) -{ -#if SDL_VIDEO_OPENGL - GLenum mesa_attrib; - SDL_Surface *surface; - - if (!gl_active) { - return -1; - } - - switch(attrib) { - case SDL_GL_RED_SIZE: - mesa_attrib = GL_RED_BITS; - break; - case SDL_GL_GREEN_SIZE: - mesa_attrib = GL_GREEN_BITS; - break; - case SDL_GL_BLUE_SIZE: - mesa_attrib = GL_BLUE_BITS; - break; - case SDL_GL_ALPHA_SIZE: - mesa_attrib = GL_ALPHA_BITS; - break; - case SDL_GL_DOUBLEBUFFER: - surface = this->screen; - *value = ((surface->flags & SDL_DOUBLEBUF)==SDL_DOUBLEBUF); - return 0; - case SDL_GL_DEPTH_SIZE: - mesa_attrib = GL_DEPTH_BITS; - break; - case SDL_GL_STENCIL_SIZE: - mesa_attrib = GL_STENCIL_BITS; - break; - case SDL_GL_ACCUM_RED_SIZE: - mesa_attrib = GL_ACCUM_RED_BITS; - break; - case SDL_GL_ACCUM_GREEN_SIZE: - mesa_attrib = GL_ACCUM_GREEN_BITS; - break; - case SDL_GL_ACCUM_BLUE_SIZE: - mesa_attrib = GL_ACCUM_BLUE_BITS; - break; - case SDL_GL_ACCUM_ALPHA_SIZE: - mesa_attrib = GL_ACCUM_ALPHA_BITS; - break; - default : - return -1; - } - - this->gl_data->glGetIntegerv(mesa_attrib, value); - return 0; -#else - return -1; -#endif -} - -int SDL_AtariGL_MakeCurrent(_THIS) -{ -#if SDL_VIDEO_OPENGL - SDL_Surface *surface; - GLenum type; - - if (gl_oldmesa && gl_active) { - return 0; - } - - if (this->gl_config.dll_handle) { - if ((this->gl_data->OSMesaMakeCurrent == NULL) || - (this->gl_data->OSMesaPixelStore == NULL)) { - return -1; - } - } - - if (!gl_active) { - SDL_SetError("Invalid OpenGL context"); - return -1; - } - - surface = this->screen; - - if ((surface->format->BitsPerPixel == 15) || (surface->format->BitsPerPixel == 16)) { - type = GL_UNSIGNED_SHORT_5_6_5; - } else { - type = GL_UNSIGNED_BYTE; - } - - if (!(this->gl_data->OSMesaMakeCurrent(gl_ctx, surface->pixels, type, surface->w, surface->h))) { - SDL_SetError("Can not make OpenGL context current"); - return -1; - } - - /* OSMesa draws upside down */ - this->gl_data->OSMesaPixelStore(OSMESA_Y_UP, 0); - - return 0; -#else - return -1; -#endif -} - -void SDL_AtariGL_SwapBuffers(_THIS) -{ -#if SDL_VIDEO_OPENGL - if (gl_active) { - if (this->gl_config.dll_handle) { - if (this->gl_data->glFinish) { - this->gl_data->glFinish(); - } else if (this->gl_data->glFlush) { - this->gl_data->glFlush(); - } - } else { - this->gl_data->glFinish(); - } - gl_copyshadow(this, this->screen); - gl_convert(this, this->screen); - } -#endif -} - -void SDL_AtariGL_InitPointers(_THIS) -{ -#if SDL_VIDEO_OPENGL - this->gl_data->OSMesaCreateContextExt = OSMesaCreateContextExt; - this->gl_data->OSMesaDestroyContext = OSMesaDestroyContext; - this->gl_data->OSMesaMakeCurrent = OSMesaMakeCurrent; - this->gl_data->OSMesaPixelStore = OSMesaPixelStore; - this->gl_data->OSMesaGetProcAddress = OSMesaGetProcAddress; - - this->gl_data->glGetIntegerv = glGetIntegerv; - this->gl_data->glFinish = glFinish; - this->gl_data->glFlush = glFlush; - - this->gl_data->OSMesaCreateLDG = NULL; - this->gl_data->OSMesaDestroyLDG = NULL; -#endif -} - -/*--- Private functions ---*/ - -static void SDL_AtariGL_UnloadLibrary(_THIS) -{ -#if SDL_VIDEO_OPENGL - if (this->gl_config.dll_handle) { - SDL_UnloadObject(this->gl_config.dll_handle); - this->gl_config.dll_handle = NULL; - - /* Restore pointers to static library */ - SDL_AtariGL_InitPointers(this); - } -#endif -} - -/*--- Creation of an OpenGL context using new/old functions ---*/ - -#if SDL_VIDEO_OPENGL -static int InitNew(_THIS, SDL_Surface *current) -{ - GLenum osmesa_format; - SDL_PixelFormat *pixel_format; - Uint32 redmask; - int recreatecontext; - GLint newaccumsize; - - if (this->gl_config.dll_handle) { - if (this->gl_data->OSMesaCreateContextExt == NULL) { - return 0; - } - } - - /* Init OpenGL context using OSMesa */ - gl_convert = ConvertNull; - gl_copyshadow = CopyShadowNull; - gl_upsidedown = SDL_FALSE; - - pixel_format = current->format; - redmask = pixel_format->Rmask; - switch (pixel_format->BitsPerPixel) { - case 15: - /* 1555, big and little endian, unsupported */ - gl_pixelsize = 2; - osmesa_format = OSMESA_RGB_565; - if (redmask == 31<<10) { - gl_convert = Convert565To555be; - } else { - gl_convert = Convert565To555le; - } - break; - case 16: - gl_pixelsize = 2; - if (redmask == 31<<11) { - osmesa_format = OSMESA_RGB_565; - } else { - /* 565, little endian, unsupported */ - osmesa_format = OSMESA_RGB_565; - gl_convert = Convert565le; - } - break; - case 24: - gl_pixelsize = 3; - if (redmask == 255<<16) { - osmesa_format = OSMESA_RGB; - } else { - osmesa_format = OSMESA_BGR; - } - break; - case 32: - gl_pixelsize = 4; - if (redmask == 255<<16) { - osmesa_format = OSMESA_ARGB; - } else if (redmask == 255<<8) { - osmesa_format = OSMESA_BGRA; - } else if (redmask == 255<<24) { - osmesa_format = OSMESA_RGBA; - } else { - /* ABGR format unsupported */ - osmesa_format = OSMESA_BGRA; - gl_convert = ConvertBGRAToABGR; - } - break; - default: - gl_pixelsize = 1; - osmesa_format = OSMESA_COLOR_INDEX; - break; - } - - /* Try to keep current context if possible */ - newaccumsize = - this->gl_config.accum_red_size + - this->gl_config.accum_green_size + - this->gl_config.accum_blue_size + - this->gl_config.accum_alpha_size; - recreatecontext=1; - if (gl_ctx && - (gl_curformat == osmesa_format) && - (gl_curdepth == this->gl_config.depth_size) && - (gl_curstencil == this->gl_config.stencil_size) && - (gl_curaccum == newaccumsize)) { - recreatecontext = 0; - } - if (recreatecontext) { - SDL_AtariGL_Quit(this, SDL_FALSE); - - gl_ctx = this->gl_data->OSMesaCreateContextExt( - osmesa_format, this->gl_config.depth_size, - this->gl_config.stencil_size, newaccumsize, NULL ); - - if (gl_ctx) { - gl_curformat = osmesa_format; - gl_curdepth = this->gl_config.depth_size; - gl_curstencil = this->gl_config.stencil_size; - gl_curaccum = newaccumsize; - } else { - gl_curformat = 0; - gl_curdepth = 0; - gl_curstencil = 0; - gl_curaccum = 0; - } - } - - return (gl_ctx != NULL); -} - - -static int InitOld(_THIS, SDL_Surface *current) -{ - GLenum osmesa_format; - SDL_PixelFormat *pixel_format; - Uint32 redmask; - int recreatecontext, tinygl_present; - - if (this->gl_config.dll_handle) { - if (this->gl_data->OSMesaCreateLDG == NULL) { - return 0; - } - } - - /* TinyGL only supports VDI_RGB (OSMESA_RGB) */ - tinygl_present=0; - if (this->gl_config.dll_handle) { - if (this->gl_data->glFinish == NULL) { - tinygl_present=1; - } - } - - /* Init OpenGL context using OSMesa */ - gl_convert = ConvertNull; - gl_copyshadow = CopyShadowNull; - gl_upsidedown = SDL_FALSE; - - pixel_format = current->format; - redmask = pixel_format->Rmask; - switch (pixel_format->BitsPerPixel) { - case 15: - /* 15 bits unsupported */ - if (tinygl_present) { - gl_pixelsize = 3; - osmesa_format = VDI_RGB; - if (redmask == 31<<10) { - gl_copyshadow = CopyShadowRGBTo555; - } else { - gl_copyshadow = CopyShadowRGBTo565; - gl_convert = Convert565To555le; - } - } else { - gl_pixelsize = 4; - gl_upsidedown = SDL_TRUE; - osmesa_format = OSMESA_ARGB; - if (redmask == 31<<10) { - gl_copyshadow = CopyShadow8888To555; - } else { - gl_copyshadow = CopyShadow8888To565; - gl_convert = Convert565To555le; - } - } - break; - case 16: - /* 16 bits unsupported */ - if (tinygl_present) { - gl_pixelsize = 3; - osmesa_format = VDI_RGB; - gl_copyshadow = CopyShadowRGBTo565; - if (redmask != 31<<11) { - /* 565, little endian, unsupported */ - gl_convert = Convert565le; - } - } else { - gl_pixelsize = 4; - gl_upsidedown = SDL_TRUE; - osmesa_format = OSMESA_ARGB; - gl_copyshadow = CopyShadow8888To565; - if (redmask != 31<<11) { - /* 565, little endian, unsupported */ - gl_convert = Convert565le; - } - } - break; - case 24: - gl_pixelsize = 3; - if (tinygl_present) { - osmesa_format = VDI_RGB; - gl_copyshadow = CopyShadowDirect; - if (redmask != 255<<16) { - gl_copyshadow = CopyShadowRGBSwap; - } - } else { - gl_copyshadow = CopyShadowDirect; - gl_upsidedown = SDL_TRUE; - if (redmask == 255<<16) { - osmesa_format = OSMESA_RGB; - } else { - osmesa_format = OSMESA_BGR; - } - } - break; - case 32: - if (tinygl_present) { - gl_pixelsize = 3; - osmesa_format = VDI_RGB; - gl_copyshadow = CopyShadowRGBToARGB; - if (redmask == 255) { - gl_convert = CopyShadowRGBToABGR; - } else if (redmask == 255<<8) { - gl_convert = CopyShadowRGBToBGRA; - } else if (redmask == 255<<24) { - gl_convert = CopyShadowRGBToRGBA; - } - } else { - gl_pixelsize = 4; - gl_upsidedown = SDL_TRUE; - gl_copyshadow = CopyShadowDirect; - if (redmask == 255<<16) { - osmesa_format = OSMESA_ARGB; - } else if (redmask == 255<<8) { - osmesa_format = OSMESA_BGRA; - } else if (redmask == 255<<24) { - osmesa_format = OSMESA_RGBA; - } else { - /* ABGR format unsupported */ - osmesa_format = OSMESA_BGRA; - gl_convert = ConvertBGRAToABGR; - } - } - break; - default: - if (tinygl_present) { - SDL_AtariGL_Quit(this, SDL_FALSE); - return 0; - } - gl_pixelsize = 1; - gl_copyshadow = CopyShadowDirect; - osmesa_format = OSMESA_COLOR_INDEX; - break; - } - - /* Try to keep current context if possible */ - recreatecontext=1; - if (gl_shadow && - (gl_curformat == osmesa_format) && - (gl_curwidth == current->w) && - (gl_curheight == current->h)) { - recreatecontext = 0; - } - if (recreatecontext) { - SDL_AtariGL_Quit(this, SDL_FALSE); - - gl_shadow = this->gl_data->OSMesaCreateLDG( - osmesa_format, GL_UNSIGNED_BYTE, current->w, current->h - ); - - if (gl_shadow) { - gl_curformat = osmesa_format; - gl_curwidth = current->w; - gl_curheight = current->h; - } else { - gl_curformat = 0; - gl_curwidth = 0; - gl_curheight = 0; - } - } - - return (gl_shadow != NULL); -} - -/*--- Conversions routines from shadow buffer to the screen ---*/ - -static void CopyShadowNull(_THIS, SDL_Surface *surface) -{ -} - -static void CopyShadowDirect(_THIS, SDL_Surface *surface) -{ - int y, srcpitch, dstpitch; - Uint8 *srcline, *dstline; - - srcline = gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - SDL_memcpy(dstline, srcline, srcpitch); - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBTo555(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint16 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch >>1; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - for (x=0; x<surface->w; x++) { - Uint16 dstcolor; - - dstcolor = ((*srccol++)<<7) & (31<<10); - dstcolor |= ((*srccol++)<<2) & (31<<5); - dstcolor |= ((*srccol++)>>3) & 31; - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBTo565(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint16 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch >>1; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - Uint16 dstcolor; - - dstcolor = ((*srccol++)<<8) & (31<<11); - dstcolor |= ((*srccol++)<<3) & (63<<5); - dstcolor |= ((*srccol++)>>3) & 31; - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBSwap(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint8 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - *dstcol++ = srccol[2]; - *dstcol++ = srccol[1]; - *dstcol++ = srccol[0]; - srccol += 3; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBToARGB(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint32 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch >>2; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - Uint32 dstcolor; - - dstcolor = (*srccol++)<<16; - dstcolor |= (*srccol++)<<8; - dstcolor |= *srccol++; - - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBToABGR(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint32 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch >>2; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - Uint32 dstcolor; - - dstcolor = *srccol++; - dstcolor |= (*srccol++)<<8; - dstcolor |= (*srccol++)<<16; - - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBToBGRA(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint32 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch >>2; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - Uint32 dstcolor; - - dstcolor = (*srccol++)<<8; - dstcolor |= (*srccol++)<<16; - dstcolor |= (*srccol++)<<24; - - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadowRGBToRGBA(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint32 *dstline, *dstcol; - Uint8 *srcline, *srccol; - - srcline = (Uint8 *)gl_shadow; - srcpitch = surface->w * gl_pixelsize; - dstline = surface->pixels; - dstpitch = surface->pitch >>2; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - Uint32 dstcolor; - - dstcolor = (*srccol++)<<24; - dstcolor |= (*srccol++)<<16; - dstcolor |= (*srccol++)<<8; - - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadow8888To555(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint16 *dstline, *dstcol; - Uint32 *srcline, *srccol; - - srcline = (Uint32 *)gl_shadow; - srcpitch = (surface->w * gl_pixelsize) >>2; - dstline = surface->pixels; - dstpitch = surface->pitch >>1; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - for (x=0; x<surface->w; x++) { - Uint32 srccolor; - Uint16 dstcolor; - - srccolor = *srccol++; - dstcolor = (srccolor>>9) & (31<<10); - dstcolor |= (srccolor>>6) & (31<<5); - dstcolor |= (srccolor>>3) & 31; - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -static void CopyShadow8888To565(_THIS, SDL_Surface *surface) -{ - int x,y, srcpitch, dstpitch; - Uint16 *dstline, *dstcol; - Uint32 *srcline, *srccol; - - srcline = (Uint32 *)gl_shadow; - srcpitch = (surface->w * gl_pixelsize) >> 2; - dstline = surface->pixels; - dstpitch = surface->pitch >>1; - if (gl_upsidedown) { - srcline += (surface->h-1)*srcpitch; - srcpitch = -srcpitch; - } - - for (y=0; y<surface->h; y++) { - srccol = srcline; - dstcol = dstline; - - for (x=0; x<surface->w; x++) { - Uint32 srccolor; - Uint16 dstcolor; - - srccolor = *srccol++; - dstcolor = (srccolor>>8) & (31<<11); - dstcolor |= (srccolor>>5) & (63<<5); - dstcolor |= (srccolor>>3) & 31; - *dstcol++ = dstcolor; - } - - srcline += srcpitch; - dstline += dstpitch; - } -} - -/*--- Conversions routines in the screen ---*/ - -static void ConvertNull(_THIS, SDL_Surface *surface) -{ -} - -static void Convert565To555be(_THIS, SDL_Surface *surface) -{ - int x,y, pitch; - unsigned short *line, *pixel; - - line = surface->pixels; - pitch = surface->pitch >> 1; - for (y=0; y<surface->h; y++) { - pixel = line; - for (x=0; x<surface->w; x++) { - unsigned short color = *pixel; - - *pixel++ = (color & 0x1f)|((color>>1) & 0xffe0); - } - - line += pitch; - } -} - -static void Convert565To555le(_THIS, SDL_Surface *surface) -{ - int x,y, pitch; - unsigned short *line, *pixel; - - line = surface->pixels; - pitch = surface->pitch >>1; - for (y=0; y<surface->h; y++) { - pixel = line; - for (x=0; x<surface->w; x++) { - unsigned short color = *pixel; - - color = (color & 0x1f)|((color>>1) & 0xffe0); - *pixel++ = SDL_Swap16(color); - } - - line += pitch; - } -} - -static void Convert565le(_THIS, SDL_Surface *surface) -{ - int x,y, pitch; - unsigned short *line, *pixel; - - line = surface->pixels; - pitch = surface->pitch >>1; - for (y=0; y<surface->h; y++) { - pixel = line; - for (x=0; x<surface->w; x++) { - unsigned short color = *pixel; - - *pixel++ = SDL_Swap16(color); - } - - line += pitch; - } -} - -static void ConvertBGRAToABGR(_THIS, SDL_Surface *surface) -{ - int x,y, pitch; - unsigned long *line, *pixel; - - line = surface->pixels; - pitch = surface->pitch >>2; - for (y=0; y<surface->h; y++) { - pixel = line; - for (x=0; x<surface->w; x++) { - unsigned long color = *pixel; - - *pixel++ = (color<<24)|(color>>8); - } - - line += pitch; - } -} - -#endif /* SDL_VIDEO_OPENGL */ |