view src/video/Xext/extensions/xf86dga1str.h @ 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 c121d94672cb
children
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/* $XFree86: xc/include/extensions/xf86dga1str.h,v 1.2 1999/05/03 12:15:37 dawes Exp $ */
/*

Copyright (c) 1995  Jon Tombs
Copyright (c) 1995  XFree86 Inc.

*/

#ifndef _XF86DGASTR1_H_
#define _XF86DGASTR1_H_

typedef struct _XF86DGAQueryVersion
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_DGAQueryVersion */
    CARD16 length B16;
} xXF86DGAQueryVersionReq;
#define sz_xXF86DGAQueryVersionReq	4

typedef struct
{
    BYTE type;                  /* X_Reply */
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD16 majorVersion B16;    /* major version of DGA protocol */
    CARD16 minorVersion B16;    /* minor version of DGA protocol */
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
    CARD32 pad6 B32;
} xXF86DGAQueryVersionReply;
#define sz_xXF86DGAQueryVersionReply	32

typedef struct _XF86DGAGetVideoLL
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_XF86DGAGetVideoLL */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 pad B16;
} xXF86DGAGetVideoLLReq;
#define sz_xXF86DGAGetVideoLLReq	8

typedef struct _XF86DGAInstallColormap
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 pad2;
    CARD32 id B32;              /* colormap. */
} xXF86DGAInstallColormapReq;
#define sz_xXF86DGAInstallColormapReq        12


typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 offset B32;
    CARD32 width B32;
    CARD32 bank_size B32;
    CARD32 ram_size B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
} xXF86DGAGetVideoLLReply;
#define sz_xXF86DGAGetVideoLLReply	32

typedef struct _XF86DGADirectVideo
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_XF86DGADirectVideo */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 enable B16;
} xXF86DGADirectVideoReq;
#define sz_xXF86DGADirectVideoReq	8


typedef struct _XF86DGAGetViewPortSize
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_XF86DGAGetViewPort */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 pad B16;
} xXF86DGAGetViewPortSizeReq;
#define sz_xXF86DGAGetViewPortSizeReq	8

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 width B32;
    CARD32 height B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
} xXF86DGAGetViewPortSizeReply;
#define sz_xXF86DGAGetViewPortSizeReply	32

typedef struct _XF86DGASetViewPort
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_XF86DGASetViewPort */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 pad B16;
    CARD32 x B32;
    CARD32 y B32;
} xXF86DGASetViewPortReq;
#define sz_xXF86DGASetViewPortReq	16

typedef struct _XF86DGAGetVidPage
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_XF86DGAGetVidPage */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 pad B16;
} xXF86DGAGetVidPageReq;
#define sz_xXF86DGAGetVidPageReq	8

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 vpage B32;
    CARD32 pad B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
} xXF86DGAGetVidPageReply;
#define sz_xXF86DGAGetVidPageReply	32


typedef struct _XF86DGASetVidPage
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_XF86DGASetVidPage */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 vpage B16;
} xXF86DGASetVidPageReq;
#define sz_xXF86DGASetVidPageReq	8


typedef struct _XF86DGAQueryDirectVideo
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_DGAQueryVersion */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 pad B16;
} xXF86DGAQueryDirectVideoReq;
#define sz_xXF86DGAQueryDirectVideoReq	8

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 flags B32;
    CARD32 pad B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
} xXF86DGAQueryDirectVideoReply;
#define sz_xXF86DGAQueryDirectVideoReply 32


typedef struct _XF86DGAViewPortChanged
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_DGAQueryVersion */
    CARD16 length B16;
    CARD16 screen B16;
    CARD16 n B16;
} xXF86DGAViewPortChangedReq;
#define sz_xXF86DGAViewPortChangedReq	8

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 result B32;
    CARD32 pad B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
} xXF86DGAViewPortChangedReply;
#define sz_xXF86DGAViewPortChangedReply 32

#endif /* _XF86DGASTR1_H_ */
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