view src/video/Xext/extensions/xf86dgastr.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
line wrap: on
line source

/* $XFree86: xc/include/extensions/xf86dgastr.h,v 3.14 2001/08/01 00:44:36 tsi Exp $ */
/*

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

*/

#ifndef _XF86DGASTR_H_
#define _XF86DGASTR_H_

#include "xf86dga1str.h"

#define XF86DGANAME "XFree86-DGA"

#define XDGA_MAJOR_VERSION	2       /* current version numbers */
#define XDGA_MINOR_VERSION	0


typedef struct _XDGAQueryVersion
{
    CARD8 reqType;              /* always DGAReqCode */
    CARD8 dgaReqType;           /* always X_DGAQueryVersion */
    CARD16 length B16;
} xXDGAQueryVersionReq;
#define sz_xXDGAQueryVersionReq		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;
} xXDGAQueryVersionReply;
#define sz_xXDGAQueryVersionReply	32

typedef struct _XDGAQueryModes
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
} xXDGAQueryModesReq;
#define sz_xXDGAQueryModesReq		8

typedef struct
{
    BYTE type;                  /* X_Reply */
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 number B32;          /* number of modes available */
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
    CARD32 pad6 B32;
} xXDGAQueryModesReply;
#define sz_xXDGAQueryModesReply	32


typedef struct _XDGASetMode
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD32 mode B32;            /* mode number to init */
    CARD32 pid B32;             /* Pixmap descriptor */
} xXDGASetModeReq;
#define sz_xXDGASetModeReq		16

typedef struct
{
    BYTE type;                  /* X_Reply */
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 offset B32;          /* offset into framebuffer map */
    CARD32 flags B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
} xXDGASetModeReply;
#define sz_xXDGASetModeReply	32

typedef struct
{
    CARD8 byte_order;
    CARD8 depth;
    CARD16 num B16;
    CARD16 bpp B16;
    CARD16 name_size B16;
    CARD32 vsync_num B32;
    CARD32 vsync_den B32;
    CARD32 flags B32;
    CARD16 image_width B16;
    CARD16 image_height B16;
    CARD16 pixmap_width B16;
    CARD16 pixmap_height B16;
    CARD32 bytes_per_scanline B32;
    CARD32 red_mask B32;
    CARD32 green_mask B32;
    CARD32 blue_mask B32;
    CARD16 visual_class B16;
    CARD16 pad1 B16;
    CARD16 viewport_width B16;
    CARD16 viewport_height B16;
    CARD16 viewport_xstep B16;
    CARD16 viewport_ystep B16;
    CARD16 viewport_xmax B16;
    CARD16 viewport_ymax B16;
    CARD32 viewport_flags B32;
    CARD32 reserved1 B32;
    CARD32 reserved2 B32;
} xXDGAModeInfo;
#define sz_xXDGAModeInfo 72

typedef struct _XDGAOpenFramebuffer
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
} xXDGAOpenFramebufferReq;
#define sz_xXDGAOpenFramebufferReq	8

typedef struct
{
    BYTE type;                  /* X_Reply */
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;          /* device name size if there is one */
    CARD32 mem1 B32;            /* physical memory */
    CARD32 mem2 B32;            /* spillover for _alpha_ */
    CARD32 size B32;            /* size of map in bytes */
    CARD32 offset B32;          /* optional offset into device */
    CARD32 extra B32;           /* extra info associated with the map */
    CARD32 pad2 B32;
} xXDGAOpenFramebufferReply;
#define sz_xXDGAOpenFramebufferReply	32


typedef struct _XDGACloseFramebuffer
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
} xXDGACloseFramebufferReq;
#define sz_xXDGACloseFramebufferReq	8


typedef struct _XDGASetViewport
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD16 x B16;
    CARD16 y B16;
    CARD32 flags B32;
} xXDGASetViewportReq;
#define sz_xXDGASetViewportReq	16


typedef struct _XDGAInstallColormap
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD32 cmap B32;
} xXDGAInstallColormapReq;
#define sz_xXDGAInstallColormapReq	12

typedef struct _XDGASelectInput
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD32 mask B32;
} xXDGASelectInputReq;
#define sz_xXDGASelectInputReq	12

typedef struct _XDGAFillRectangle
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD16 x B16;
    CARD16 y B16;
    CARD16 width B16;
    CARD16 height B16;
    CARD32 color B32;
} xXDGAFillRectangleReq;
#define sz_xXDGAFillRectangleReq	20


typedef struct _XDGACopyArea
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD16 srcx B16;
    CARD16 srcy B16;
    CARD16 width B16;
    CARD16 height B16;
    CARD16 dstx B16;
    CARD16 dsty B16;
} xXDGACopyAreaReq;
#define sz_xXDGACopyAreaReq	20

typedef struct _XDGACopyTransparentArea
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD16 srcx B16;
    CARD16 srcy B16;
    CARD16 width B16;
    CARD16 height B16;
    CARD16 dstx B16;
    CARD16 dsty B16;
    CARD32 key B32;
} xXDGACopyTransparentAreaReq;
#define sz_xXDGACopyTransparentAreaReq	24


typedef struct _XDGAGetViewportStatus
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
} xXDGAGetViewportStatusReq;
#define sz_xXDGAGetViewportStatusReq	8

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 status B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
    CARD32 pad6 B32;
} xXDGAGetViewportStatusReply;
#define sz_xXDGAGetViewportStatusReply	32

typedef struct _XDGASync
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
} xXDGASyncReq;
#define sz_xXDGASyncReq	8

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD32 pad2 B32;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
    CARD32 pad6 B32;
    CARD32 pad7 B32;
} xXDGASyncReply;
#define sz_xXDGASyncReply	32

typedef struct _XDGASetClientVersion
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD16 major B16;
    CARD16 minor B16;
} xXDGASetClientVersionReq;
#define sz_xXDGASetClientVersionReq	8


typedef struct
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD16 x B16;
    CARD16 y B16;
    CARD32 flags B32;
} xXDGAChangePixmapModeReq;
#define sz_xXDGAChangePixmapModeReq	16

typedef struct
{
    BYTE type;
    BOOL pad1;
    CARD16 sequenceNumber B16;
    CARD32 length B32;
    CARD16 x B16;
    CARD16 y B16;
    CARD32 pad3 B32;
    CARD32 pad4 B32;
    CARD32 pad5 B32;
    CARD32 pad6 B32;
    CARD32 pad7 B32;
} xXDGAChangePixmapModeReply;
#define sz_xXDGAChangePixmapModeReply	32

typedef struct _XDGACreateColormap
{
    CARD8 reqType;
    CARD8 dgaReqType;
    CARD16 length B16;
    CARD32 screen B32;
    CARD32 id B32;
    CARD32 mode B32;
    CARD8 alloc;
    CARD8 pad1;
    CARD16 pad2;
} xXDGACreateColormapReq;
#define sz_xXDGACreateColormapReq	20


typedef struct
{
    union
    {
        struct
        {
            BYTE type;
            BYTE detail;
            CARD16 sequenceNumber B16;
        } u;
        struct
        {
            CARD32 pad0 B32;
            CARD32 time B32;
            INT16 dx B16;
            INT16 dy B16;
            INT16 screen B16;
            CARD16 state B16;
            CARD32 pad1 B32;
            CARD32 pad2 B32;
            CARD32 pad3 B32;
            CARD32 pad4 B32;
        } event;
    } u;
} dgaEvent;


#endif /* _XF86DGASTR_H_ */
/* vi: set ts=4 sw=4 expandtab: */