Mercurial > sdl-ios-xcode
view src/video/qnxgf/SDL_gf_pixelfmt.c @ 3485:e77a69aae239
Mason Wheeler to sdl
I updated SDL, and suddenly my SDL frames stopped working. They'd "initialize" full of gibberish, and I couldn't render anything to them. After a bit of digging, I found a problem: the renderer initialization routine in my SDL frame code wasn't getting called anymore.
procedure TSdlFrame.Paint;
begin
if SDL_SelectRenderer(FWindowID) = -1 then
CreateRenderer;
SDL_RenderPresent;
end;
function TSdlFrame.CreateRenderer: boolean;
const
pf: tagPIXELFORMATDESCRIPTOR = (nSize: sizeof(pf); nVersion: 1;
dwFlags: PFD_DRAW_TO_WINDOW or PFD_SUPPORT_OPENGL or PFD_DOUBLEBUFFER;
iPixelType: PFD_TYPE_RGBA; cColorBits: 24; cAlphaBits: 8;
iLayerType: PFD_MAIN_PLANE);
RENDERERS: array[TRendererType] of AnsiString = ('software', 'gdi', 'opengl', 'd3d');
var
pFormat: integer;
begin
if (SDL_SelectRenderer(FWindowID) = 0) then
begin
result := true;
Exit;
end;
if FRendererType = rtOpenGL then
begin
pFormat := ChoosePixelFormat(canvas.Handle, @pf);
if not SetPixelFormat(canvas.Handle, pFormat, @pf) then
outputDebugString(PChar(SysErrorMessage(GetLastError)));
if wglCreateContext(canvas.Handle) = 0 then
outputDebugString(PChar(SysErrorMessage(GetLastError)));
end;
if (SDL_CreateRenderer(FWindowID, SDL_RendererIndex(RENDERERS[FRendererType]), [sdlrPresentFlip3, sdlrAccelerated]) = 0) then
begin
SDL_ShowWindow(FWindowID);
assert(SDL_SetRenderDrawColor(0, 0, 0, 255) = 0);
FFlags := SDL_GetWindowFlags(FWindowID);
if assigned(FOnAvailable) then
FOnAvailable(self);
end
else outputDebugString(pChar(format('SDL_CreateRenderer failed: %s', [sdl_GetError])));
result := SDL_SelectRenderer(FWindowID) = 0;
end;
This is a critical issue. The Paint method gets called when the control receives a WM_PAINT message from Windows. I can't create the renderer before then, or it will fail and cause trouble. And when I do create it, it needs to be created with certain parameters. So imagine my surprise when I started debugging into the DLL and found that SDL_SelectRenderer was trying to be "helpful" by creating the renderer for me if it didn't already exist! Now not only does my initialization code not get called, I end up with the wrong renderer and so things don't render as expected when I try to use the window.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 24 Nov 2009 04:48:12 +0000 |
parents | 44d5474c2c8a |
children | f7b03b6838cb |
line wrap: on
line source
/* 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 QNX Graphics Framework SDL driver Copyright (C) 2009 Mike Gorchak (mike@malva.ua, lestat@i.com.ua) */ #include "SDL_config.h" #include "SDL_gf_pixelfmt.h" gf_format_t qnxgf_sdl_to_gf_pixelformat(uint32_t pixelfmt) { switch (pixelfmt) { case SDL_PIXELFORMAT_INDEX8: { return GF_FORMAT_PAL8; } break; case SDL_PIXELFORMAT_ARGB1555: { return GF_FORMAT_PACK_ARGB1555; } break; case SDL_PIXELFORMAT_RGB555: { /* RGB555 is the same as ARGB1555, but alpha is ignored */ return GF_FORMAT_PACK_ARGB1555; } break; case SDL_PIXELFORMAT_RGB565: { return GF_FORMAT_PACK_RGB565; } break; case SDL_PIXELFORMAT_BGR565: { return GF_FORMAT_PKBE_RGB565; } break; case SDL_PIXELFORMAT_RGB24: { /* GF has wrong components order */ return GF_FORMAT_BGR888; } break; case SDL_PIXELFORMAT_RGB888: { /* The same format as ARGB8888, but with alpha ignored */ /* and GF has wrong components order */ return GF_FORMAT_BGRA8888; } break; case SDL_PIXELFORMAT_ARGB8888: { /* GF has wrong components order */ return GF_FORMAT_BGRA8888; } break; case SDL_PIXELFORMAT_BGRA8888: { /* GF has wrong components order */ return GF_FORMAT_ARGB8888; } break; case SDL_PIXELFORMAT_YV12: { return GF_FORMAT_PLANAR_YUV_YV12; } break; case SDL_PIXELFORMAT_YUY2: { return GF_FORMAT_PACK_YUV_YUY2; } break; case SDL_PIXELFORMAT_UYVY: { return GF_FORMAT_PACK_YUV_UYVY; } break; case SDL_PIXELFORMAT_YVYU: { return GF_FORMAT_PACK_YUV_YVYU; } break; } return GF_FORMAT_INVALID; } uint32_t qnxgf_gf_to_sdl_pixelformat(gf_format_t pixelfmt) { switch (pixelfmt) { case GF_FORMAT_PAL8: { return SDL_PIXELFORMAT_INDEX8; } break; case GF_FORMAT_PKLE_ARGB1555: { return SDL_PIXELFORMAT_ARGB1555; } break; case GF_FORMAT_PACK_ARGB1555: { return SDL_PIXELFORMAT_ARGB1555; } break; case GF_FORMAT_PKBE_RGB565: { return SDL_PIXELFORMAT_BGR565; } break; case GF_FORMAT_PKLE_RGB565: { return SDL_PIXELFORMAT_RGB565; } break; case GF_FORMAT_PACK_RGB565: { return SDL_PIXELFORMAT_RGB565; } break; case GF_FORMAT_BGR888: { /* GF has wrong components order */ return SDL_PIXELFORMAT_RGB24; } break; case GF_FORMAT_BGRA8888: { /* GF has wrong components order */ return SDL_PIXELFORMAT_ARGB8888; } break; case GF_FORMAT_ARGB8888: { /* GF has wrong components order */ return SDL_PIXELFORMAT_BGRA8888; } break; case GF_FORMAT_PLANAR_YUV_YV12: { return SDL_PIXELFORMAT_YV12; } break; case GF_FORMAT_PACK_YUV_YUY2: { return SDL_PIXELFORMAT_YUY2; } break; case GF_FORMAT_PACK_YUV_UYVY: { return SDL_PIXELFORMAT_UYVY; } break; case GF_FORMAT_PACK_YUV_YVYU: { return SDL_PIXELFORMAT_YVYU; } break; } return SDL_PIXELFORMAT_UNKNOWN; } /* vi: set ts=4 sw=4 expandtab: */