Mercurial > sdl-ios-xcode
changeset 4817:c68e7490e4cf
Fixed a couple of bugs in the general and X11 shape code, and fixed a bug in testshape that was keeping it from recognizing surfaces without alpha. Thanks to Andreas's bit-bashing tip, X11 shaped windows now work entirely, AFAICT.
| author | Eli Gottlieb <eligottlieb@gmail.com> |
|---|---|
| date | Sun, 01 Aug 2010 21:10:42 -0400 |
| parents | eb433f0d2ac5 |
| children | 44889440eada |
| files | src/video/SDL_shape.c src/video/SDL_shape_internals.h src/video/x11/SDL_x11shape.c test/testshape.c |
| diffstat | 4 files changed, 19 insertions(+), 17 deletions(-) [+] |
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--- a/src/video/SDL_shape.c Fri Jul 30 18:04:21 2010 -0400 +++ b/src/video/SDL_shape.c Sun Aug 01 21:10:42 2010 -0400 @@ -27,7 +27,7 @@ #include "SDL_pixels.h" #include "SDL_surface.h" #include "SDL_shape.h" -#include "SDL_shape_internals.h" +#include "../src/video/SDL_shape_internals.h" SDL_Window* SDL_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags) { SDL_Window *result = SDL_CreateWindow(title,x,y,w,h,SDL_WINDOW_BORDERLESS | flags & !SDL_WINDOW_FULLSCREEN & !SDL_WINDOW_SHOWN); @@ -57,12 +57,12 @@ } /* REQUIRES that bitmap point to a w-by-h bitmap with ppb pixels-per-byte. */ -void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb,Uint8 value) { +void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb) { int x = 0; int y = 0; Uint8 r = 0,g = 0,b = 0,alpha = 0; Uint8* pixel = NULL; - Uint32 bitmap_pixel,pixel_value = 0; + Uint32 bitmap_pixel,pixel_value = 0,mask_value = 0; SDL_Color key; if(SDL_MUSTLOCK(shape)) SDL_LockSurface(shape); @@ -79,6 +79,9 @@ case(2): pixel_value = *(Uint16*)pixel; break; + case(3): + pixel_value = *(Uint32*)pixel & (~shape->format->Amask); + break; case(4): pixel_value = *(Uint32*)pixel; break; @@ -87,19 +90,20 @@ bitmap_pixel = y*shape->w + x; switch(mode.mode) { case(ShapeModeDefault): - bitmap[bitmap_pixel / ppb] |= (alpha >= 1 ? value : 0) << ((ppb - 1) - (bitmap_pixel % ppb)); + mask_value = (alpha >= 1 ? 1 : 0); break; case(ShapeModeBinarizeAlpha): - bitmap[bitmap_pixel / ppb] |= (alpha >= mode.parameters.binarizationCutoff ? value : 0) << ((ppb - 1) - (bitmap_pixel % ppb)); + mask_value = (alpha >= mode.parameters.binarizationCutoff ? 1 : 0); break; case(ShapeModeReverseBinarizeAlpha): - bitmap[bitmap_pixel / ppb] |= (alpha <= mode.parameters.binarizationCutoff ? value : 0) << ((ppb - 1) - (bitmap_pixel % ppb)); + mask_value = (alpha <= mode.parameters.binarizationCutoff ? 1 : 0); break; case(ShapeModeColorKey): key = mode.parameters.colorKey; - bitmap[bitmap_pixel / ppb] |= ((key.r == r && key.g == g && key.b == b) ? value : 0) << ((ppb - 1) - (bitmap_pixel % ppb)); + mask_value = ((key.r != r && key.g != g && key.b != b) ? 1 : 0); break; } + bitmap[bitmap_pixel / ppb] |= mask_value << (7 - ((ppb - 1) - (bitmap_pixel % ppb))); } } if(SDL_MUSTLOCK(shape))
--- a/src/video/SDL_shape_internals.h Fri Jul 30 18:04:21 2010 -0400 +++ b/src/video/SDL_shape_internals.h Sun Aug 01 21:10:42 2010 -0400 @@ -19,6 +19,7 @@ Eli Gottlieb eligottlieb@gmail.com */ +#include "SDL_config.h" #ifndef _SDL_shape_internals_h #define _SDL_shape_internals_h @@ -51,7 +52,7 @@ SDL_ShapeUnion data; } SDL_ShapeTree; -extern void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb,Uint8 value); +extern void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb); extern SDL_ShapeTree* SDL_CalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* shape,SDL_bool invert); extern void SDL_TraverseShapeTree(SDL_ShapeTree *tree,void(*function)(SDL_ShapeTree*,void*),void* closure); extern void SDL_FreeShapeTree(SDL_ShapeTree** shapeTree);
--- a/src/video/x11/SDL_x11shape.c Fri Jul 30 18:04:21 2010 -0400 +++ b/src/video/x11/SDL_x11shape.c Sun Aug 01 21:10:42 2010 -0400 @@ -70,8 +70,7 @@ return -1; } } - else - memset(data->bitmap,0,data->bitmapsize); + memset(data->bitmap,0,data->bitmapsize); window->shaper->usershownflag |= window->flags & SDL_WINDOW_SHOWN; @@ -90,7 +89,7 @@ SDL_ShapeData *data = shaper->driverdata; /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */ - SDL_CalculateShapeBitmap(shaper->mode,shape,data->bitmap,8,1); + SDL_CalculateShapeBitmap(shaper->mode,shape,data->bitmap,8); SDL_WindowData *windowdata = (SDL_WindowData*)(shaper->window->driverdata); Pixmap shapemask = XCreateBitmapFromData(windowdata->videodata->display,windowdata->xwindow,data->bitmap,shaper->window->w,shaper->window->h);
--- a/test/testshape.c Fri Jul 30 18:04:21 2010 -0400 +++ b/test/testshape.c Sun Aug 01 21:10:42 2010 -0400 @@ -43,7 +43,7 @@ Uint8 num_pictures; LoadedPicture* pictures; int i, j; - SDL_PixelFormat* format; + SDL_PixelFormat* format = NULL; Uint32 format_enum; SDL_Window *window; SDL_Color black = {0,0,0,0xff}; @@ -52,8 +52,8 @@ int should_exit = 0; unsigned int current_picture; int button_down; - Uint32 pixelFormat; - int access; + Uint32 pixelFormat = 0; + int access = 0; SDL_Rect texture_dimensions;; if(argc < 2) { @@ -84,8 +84,7 @@ } format = pictures[i].surface->format; - format_enum = SDL_MasksToPixelFormatEnum (format->BitsPerPixel,format->Rmask,format->Gmask, format->Bmask,format->Amask); - if(SDL_ISPIXELFORMAT_ALPHA(format_enum)) { + if(format->Amask != 0) { pictures[i].mode.mode = ShapeModeBinarizeAlpha; pictures[i].mode.parameters.binarizationCutoff = 1; } @@ -139,7 +138,6 @@ event_pending = SDL_PollEvent(&event); current_picture = 0; button_down = 0; - format = 0,access = 0; texture_dimensions.h = 0; texture_dimensions.w = 0; texture_dimensions.x = 0;