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;
}

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