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SDL_x11render.c
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2010 Sam Lantinga
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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
*/
#include "SDL_config.h"
#if SDL_VIDEO_RENDER_X11
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#include <limits.h> /* For INT_MIN and INT_MAX */
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#include "SDL_x11video.h"
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#include "SDL_x11render.h"
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#include "../SDL_rect_c.h"
#include "../SDL_pixels_c.h"
#include "../SDL_yuv_sw_c.h"
/* X11 renderer implementation */
static SDL_Renderer *X11_CreateRenderer(SDL_Window * window, Uint32 flags);
static int X11_DisplayModeChanged(SDL_Renderer * renderer);
static int X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int X11_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels,
int *pitch);
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static int X11_SetTextureRGBAMod(SDL_Renderer * renderer,
SDL_Texture * texture);
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static int X11_SetTextureBlendMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int X11_SetTextureScaleMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int X11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
static int X11_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch);
static void X11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static int X11_SetDrawBlendMode(SDL_Renderer * renderer);
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static int X11_RenderDrawPoints(SDL_Renderer * renderer,
const SDL_Point * points, int count);
static int X11_RenderDrawLines(SDL_Renderer * renderer,
const SDL_Point * points, int count);
static int X11_RenderDrawRects(SDL_Renderer * renderer,
const SDL_Rect ** rects, int count);
static int X11_RenderFillRects(SDL_Renderer * renderer,
const SDL_Rect ** rects, int count);
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static int X11_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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static int X11_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, void * pixels, int pitch);
static int X11_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, const void * pixels, int pitch);
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static void X11_RenderPresent(SDL_Renderer * renderer);
static void X11_DestroyTexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void X11_DestroyRenderer(SDL_Renderer * renderer);
SDL_RenderDriver X11_RenderDriver = {
X11_CreateRenderer,
{
"x11",
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
SDL_TEXTUREMODULATE_NONE,
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SDL_BLENDMODE_NONE,
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SDL_TEXTURESCALEMODE_NONE,
0,
{0},
0,
0}
};
typedef struct
{
Display *display;
int screen;
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Visual *visual;
int depth;
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int scanline_pad;
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Window xwindow;
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Pixmap pixmaps[3];
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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Pixmap stencil;
Pixmap brush;
Picture brush_pict;
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Picture xwindow_pict;
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Picture pixmap_picts[3];
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Picture drawable_pict;
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Picture stencil_pict;
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int blend_op;
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XRenderPictFormat *xwindow_pict_fmt;
XRenderPictFormat *drawable_pict_fmt;
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GC stencil_gc;
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SDL_bool use_xrender;
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#ifdef SDL_VIDEO_DRIVER_X11_XDAMAGE
SDL_bool use_xdamage;
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Damage stencil_damage;
XserverRegion stencil_parts;
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#endif
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#endif
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int current_pixmap;
Drawable drawable;
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SDL_PixelFormat format;
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GC gc;
SDL_DirtyRectList dirty;
SDL_bool makedirty;
} X11_RenderData;
typedef struct
{
SDL_SW_YUVTexture *yuv;
Uint32 format;
Pixmap pixmap;
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int depth;
Visual *visual;
GC gc;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
Picture picture;
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Pixmap modulated_pixmap;
Picture modulated_picture;
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XRenderPictFormat* picture_fmt;
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int blend_op;
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const char* filter;
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#endif
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XImage *image;
#ifndef NO_SHARED_MEMORY
/* MIT shared memory extension information */
XShmSegmentInfo shminfo;
#endif
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XImage *scaling_image;
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void *pixels;
int pitch;
} X11_TextureData;
#ifndef NO_SHARED_MEMORY
/* Shared memory error handler routine */
static int shm_error;
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static int (*X_handler) (Display *, XErrorEvent *) = NULL;
static int
shm_errhandler(Display * d, XErrorEvent * e)
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{
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if (e->error_code == BadAccess) {
shm_error = True;
return (0);
} else {
return (X_handler(d, e));
}
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}
#endif /* ! NO_SHARED_MEMORY */
static void
UpdateYUVTextureData(SDL_Texture * texture)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
SDL_Rect rect;
rect.x = 0;
rect.y = 0;
rect.w = texture->w;
rect.h = texture->h;
SDL_SW_CopyYUVToRGB(data->yuv, &rect, data->format, texture->w,
texture->h, data->pixels, data->pitch);
}
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
static SDL_bool
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CheckXRender(Display *display, int *major, int *minor)
{
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const char *env;
*major = *minor = 0;
env = SDL_getenv("SDL_VIDEO_X11_XRENDER");
if (env && !SDL_atoi(env)) {
return SDL_FALSE;
}
if (!SDL_X11_HAVE_XRENDER) {
return SDL_FALSE;
}
if (!XRenderQueryVersion(display, major, minor)) {
return SDL_FALSE;
}
return SDL_TRUE;
}
#endif
#ifdef SDL_VIDEO_DRIVER_X11_XFIXES
static SDL_bool
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CheckXFixes(Display *display, int *major, int *minor)
{
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const char *env;
*major = *minor = 0;
env = SDL_getenv("SDL_VIDEO_X11_XFIXES");
if (env && !SDL_atoi(env)) {
return SDL_FALSE;
}
if (!SDL_X11_HAVE_XFIXES) {
return SDL_FALSE;
}
if (!XFixesQueryVersion(display, major, minor)) {
return SDL_FALSE;
}
return SDL_TRUE;
}
#endif
#ifdef SDL_VIDEO_DRIVER_X11_XDAMAGE
static SDL_bool
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CheckXDamage(Display *display, int *major, int *minor)
{
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const char *env;
*major = *minor = 0;
env = SDL_getenv("SDL_VIDEO_X11_XDAMAGE");
if (env && !SDL_atoi(env)) {
return SDL_FALSE;
}
if (!SDL_X11_HAVE_XDAMAGE) {
return SDL_FALSE;
}
if (!XDamageQueryVersion(display, major, minor)) {
return SDL_FALSE;
}
return SDL_TRUE;
}
#endif
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
static Uint32
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XRenderPictFormatToSDLPixelFormatEnum(XRenderPictFormat *pict_format)
{
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if (pict_format->type != PictTypeDirect) {
SDL_SetError("Indexed pict formats not supported ATM");
return 0;
}
Uint32 Amask, Rmask, Gmask, Bmask;
int bpp;
Rmask = pict_format->direct.redMask << pict_format->direct.red;
Gmask = pict_format->direct.greenMask << pict_format->direct.green;
Bmask = pict_format->direct.blueMask << pict_format->direct.blue;
Amask = pict_format->direct.alphaMask << pict_format->direct.alpha;
bpp = pict_format->depth;
Uint32 format;
format = SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask);
return format;
}
#endif
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void
X11_AddRenderDriver(_THIS)
{
SDL_RendererInfo *info = &X11_RenderDriver.info;
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SDL_DisplayMode *mode = &SDL_CurrentDisplay->desktop_mode;
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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int i;
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info->texture_formats[info->num_texture_formats++] = mode->format;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_YV12;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_IYUV;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_YUY2;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_UYVY;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_YVYU;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
int major, minor;
if (CheckXRender(data->display, &major, &minor)) {
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XRenderPictFormat templ;
templ.type = PictTypeDirect;
XRenderPictFormat *pict_format;
Uint32 format;
int i = 0;
while (info->num_texture_formats < 50) {
pict_format =
XRenderFindFormat(data->display, PictFormatType, &templ, i++);
if (pict_format) {
format = XRenderPictFormatToSDLPixelFormatEnum(pict_format);
if (format != SDL_PIXELTYPE_UNKNOWN) {
info->texture_formats[info->num_texture_formats++] = format;
}
}
else
break;
}
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info->blend_modes |= (SDL_BLENDMODE_BLEND | SDL_BLENDMODE_ADD |
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SDL_BLENDMODE_MOD | SDL_BLENDMODE_MASK);
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info->scale_modes |= (SDL_TEXTURESCALEMODE_FAST | SDL_TEXTURESCALEMODE_SLOW |
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SDL_TEXTURESCALEMODE_BEST);
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info->mod_modes |= (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA);
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}
#endif
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for (i = 0; i < _this->num_displays; ++i) {
SDL_AddRenderDriver(&_this->displays[i], &X11_RenderDriver);
}
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}
SDL_Renderer *
X11_CreateRenderer(SDL_Window * window, Uint32 flags)
{
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SDL_VideoDisplay *display = window->display;
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SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata;
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SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer;
X11_RenderData *data;
XGCValues gcv;
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gcv.graphics_exposures = False;
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int i, n;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
data = (X11_RenderData *) SDL_calloc(1, sizeof(*data));
if (!data) {
X11_DestroyRenderer(renderer);
SDL_OutOfMemory();
return NULL;
}
data->display = windowdata->videodata->display;
data->screen = displaydata->screen;
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data->visual = displaydata->visual;
data->depth = displaydata->depth;
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data->scanline_pad = displaydata->scanline_pad;
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data->xwindow = windowdata->xwindow;
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renderer->DisplayModeChanged = X11_DisplayModeChanged;
renderer->CreateTexture = X11_CreateTexture;
renderer->QueryTexturePixels = X11_QueryTexturePixels;
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renderer->SetTextureAlphaMod = X11_SetTextureRGBAMod;
renderer->SetTextureColorMod = X11_SetTextureRGBAMod;
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renderer->SetTextureBlendMode = X11_SetTextureBlendMode;
renderer->SetTextureScaleMode = X11_SetTextureScaleMode;
renderer->UpdateTexture = X11_UpdateTexture;
renderer->LockTexture = X11_LockTexture;
renderer->UnlockTexture = X11_UnlockTexture;
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renderer->SetDrawBlendMode = X11_SetDrawBlendMode;
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renderer->RenderDrawPoints = X11_RenderDrawPoints;
renderer->RenderDrawLines = X11_RenderDrawLines;
renderer->RenderDrawRects = X11_RenderDrawRects;
renderer->RenderFillRects = X11_RenderFillRects;
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renderer->RenderCopy = X11_RenderCopy;
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renderer->RenderReadPixels = X11_RenderReadPixels;
renderer->RenderWritePixels = X11_RenderWritePixels;
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renderer->RenderPresent = X11_RenderPresent;
renderer->DestroyTexture = X11_DestroyTexture;
renderer->DestroyRenderer = X11_DestroyRenderer;
renderer->info = X11_RenderDriver.info;
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renderer->window = window;
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renderer->driverdata = data;
renderer->info.flags = SDL_RENDERER_ACCELERATED;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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int major, minor;
data->use_xrender = CheckXRender(data->display, &major, &minor);
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#ifdef SDL_VIDEO_DRIVER_X11_XDAMAGE
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if (CheckXDamage(data->display, &major, &minor)) {
if (CheckXFixes(data->display, &major, &minor)) {
if (major >= 2)
data->use_xdamage = SDL_TRUE;
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}
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}
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#endif
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if (data->use_xrender) {
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/* Find the PictFormat from the visual.
* Should be an RGB PictFormat most of the time. */
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data->xwindow_pict_fmt = XRenderFindVisualFormat(data->display,
data->visual);
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if (!data->xwindow_pict_fmt) {
SDL_SetError("XRenderFindVisualFormat() failed");
return NULL;
}
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data->xwindow_pict = XRenderCreatePicture(data->display,
data->xwindow,
data->xwindow_pict_fmt,
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0, NULL);
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if (!data->xwindow_pict) {
SDL_SetError("XRenderCreatePicture() failed");
return NULL;
}
// FIXME: Clear the window. Is this required?
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XRenderComposite(data->display,
PictOpClear,
data->xwindow_pict,
None,
data->xwindow_pict,
0, 0,
0, 0,
0, 0,
window->w, window->h);
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/* Create a clip mask that is used for rendering primitives. */
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data->stencil = XCreatePixmap(data->display, data->xwindow,
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window->w, window->h, 32);
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/* Create the GC for the clip mask. */
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data->stencil_gc = XCreateGC(data->display, data->stencil,
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GCGraphicsExposures, &gcv);
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XSetBackground(data->display, data->stencil_gc, 0);
XSetForeground(data->display, data->stencil_gc, 0);
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XFillRectangle(data->display, data->stencil, data->stencil_gc,
0, 0, window->w, window->h);
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XSetForeground(data->display, data->stencil_gc, 0xFFFFFFFF);
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data->stencil_pict =
XRenderCreatePicture(data->display, data->stencil,
XRenderFindStandardFormat(data->display,
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PictStandardARGB32),
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0, NULL);
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#ifdef SDL_VIDEO_DRIVER_X11_XDAMAGE
if (data->use_xdamage) {
data->stencil_damage =
XDamageCreate(data->display, data->stencil, XDamageReportNonEmpty);
XDamageSubtract(data->display, data->stencil_damage, None, data->stencil_parts);
}
#endif
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data->brush =
XCreatePixmap(data->display, data->xwindow, 1, 1, 32);
XRenderPictureAttributes brush_attr;
brush_attr.repeat = RepeatNormal;
data->brush_pict =
XRenderCreatePicture(data->display, data->brush,
XRenderFindStandardFormat(data->display,
PictStandardARGB32),
CPRepeat, &brush_attr);
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// Set the default blending mode.
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renderer->blendMode = SDL_BLENDMODE_BLEND;
data->blend_op = PictOpOver;
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}
#endif
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if (flags & SDL_RENDERER_SINGLEBUFFER) {
renderer->info.flags |=
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY);
n = 0;
} else if (flags & SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
n = 2;
} else if (flags & SDL_RENDERER_PRESENTFLIP3) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
n = 3;
} else {
renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
n = 1;
}
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
if (n > 0)
data->drawable_pict_fmt =
XRenderFindStandardFormat(data->display, PictStandardARGB32);
else
data->drawable_pict_fmt = data->xwindow_pict_fmt;
}
#endif
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for (i = 0; i < n; ++i) {
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
data->pixmaps[i] = XCreatePixmap(data->display,
data->xwindow,
window->w,
window->h,
32);
}
else
#endif
{
data->pixmaps[i] =
XCreatePixmap(data->display, data->xwindow, window->w, window->h,
displaydata->depth);
}
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if (data->pixmaps[i] == None) {
X11_DestroyRenderer(renderer);
SDL_SetError("XCreatePixmap() failed");
return NULL;
}
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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if (data->use_xrender) {
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/* Create xrender pictures for each of the pixmaps
* and clear the pixmaps. */
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data->pixmap_picts[i] =
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XRenderCreatePicture(data->display,
data->pixmaps[i],
XRenderFindStandardFormat(data->display,
PictStandardARGB32),
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0, None);
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if (!data->pixmap_picts[i]) {
SDL_SetError("XRenderCreatePicture() failed");
return NULL;
}
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XRenderComposite(data->display,
PictOpClear,
data->pixmap_picts[i],
None,
data->pixmap_picts[i],
0, 0,
0, 0,
0, 0,
window->w, window->h);
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}
#endif
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}
if (n > 0) {
data->drawable = data->pixmaps[0];
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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if(data->use_xrender == SDL_TRUE)
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data->drawable_pict = data->pixmap_picts[0];
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#endif
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data->makedirty = SDL_TRUE;
} else {
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data->drawable = data->xwindow;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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if(data->use_xrender == SDL_TRUE)
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data->drawable_pict = data->xwindow_pict;
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#endif
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data->makedirty = SDL_FALSE;
}
data->current_pixmap = 0;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
bpp = data->drawable_pict_fmt->depth;
Rmask = ((data->drawable_pict_fmt->direct.redMask)
<< (data->drawable_pict_fmt->direct.red));
Gmask = ((data->drawable_pict_fmt->direct.greenMask)
<< (data->drawable_pict_fmt->direct.green));
Bmask = ((data->drawable_pict_fmt->direct.blueMask)
<< (data->drawable_pict_fmt->direct.blue));
Amask = ((data->drawable_pict_fmt->direct.alphaMask)
<< (data->drawable_pict_fmt->direct.alpha));
}
else
#endif
{
/* Get the format of the window */
if (!SDL_PixelFormatEnumToMasks
(display->current_mode.format, &bpp, &Rmask, &Gmask, &Bmask,
&Amask)) {
SDL_SetError("Unknown display format");
X11_DestroyRenderer(renderer);
return NULL;
}
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}
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SDL_InitFormat(&data->format, bpp, Rmask, Gmask, Bmask, Amask);
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/* Create the drawing context */
gcv.graphics_exposures = False;
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data->gc =
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XCreateGC(data->display, data->drawable, GCGraphicsExposures, &gcv);
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if (!data->gc) {
X11_DestroyRenderer(renderer);
SDL_SetError("XCreateGC() failed");
return NULL;
}
return renderer;
}
static int
X11_DisplayModeChanged(SDL_Renderer * renderer)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
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SDL_Window *window = renderer->window;
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int i, n;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
XRenderFreePicture(data->display, data->xwindow_pict);
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data->xwindow_pict_fmt =
XRenderFindVisualFormat(data->display, data->visual);
data->xwindow_pict =
XRenderCreatePicture(data->display, data->xwindow,
data->xwindow_pict_fmt, 0, NULL);
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XRenderComposite(data->display,
PictOpClear,
data->xwindow_pict,
None,
data->xwindow_pict,
0, 0,
0, 0,
0, 0,
window->w, window->h);
XFreePixmap(data->display, data->stencil);
/* Create a clip mask that is used for rendering primitives. */
data->stencil = XCreatePixmap(data->display, data->xwindow,
window->w, window->h, 32);
XRenderFreePicture(data->display, data->stencil_pict);
data->stencil_pict =
XRenderCreatePicture(data->display, data->stencil,
XRenderFindStandardFormat(data->display,
PictStandardARGB32),
0, NULL);
#ifdef SDL_VIDEO_DRIVER_X11_XDAMAGE
XDamageDestroy(data->display, data->stencil_damage);
if (data->use_xdamage) {
data->stencil_damage =
XDamageCreate(data->display, data->stencil, XDamageReportNonEmpty);
XDamageSubtract(data->display, data->stencil_damage, None, data->stencil_parts);
}
#endif
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}
#endif
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if (renderer->info.flags & SDL_RENDERER_SINGLEBUFFER) {
n = 0;
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
n = 2;
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
n = 3;
} else {
n = 1;
}
for (i = 0; i < n; ++i) {
if (data->pixmaps[i] != None) {
XFreePixmap(data->display, data->pixmaps[i]);
data->pixmaps[i] = None;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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XRenderFreePicture(data->display, data->pixmap_picts[i]);
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data->pixmap_picts[i] = None;
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#endif
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}
}
for (i = 0; i < n; ++i) {
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
data->pixmaps[i] =
XCreatePixmap(data->display,
data->xwindow,
window->w,
window->h,
32);
}
else
#endif
{
data->pixmaps[i] =
XCreatePixmap(data->display, data->xwindow, window->w, window->h,
data->depth);
}
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if (data->pixmaps[i] == None) {
SDL_SetError("XCreatePixmap() failed");
return -1;
}
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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if (data->use_xrender) {
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data->pixmap_picts[i] =
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XRenderCreatePicture(data->display,
data->pixmaps[i],
XRenderFindStandardFormat(data->display,
PictStandardARGB32),
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0, None);
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if (!data->pixmap_picts[i]) {
SDL_SetError("XRenderCreatePicture() failed");
return -1;
}
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XRenderComposite(data->display,
PictOpClear,
data->pixmap_picts[i],
None,
data->pixmap_picts[i],
0, 0,
0, 0,
0, 0,
window->w, window->h);
}
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#endif
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}
if (n > 0) {
data->drawable = data->pixmaps[0];
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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data->drawable_pict = data->pixmap_picts[0];
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#endif
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}
data->current_pixmap = 0;
return 0;
}
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
static void
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SDLMaskToXRenderMask(Uint32 sdl_mask, short *comp, short *compMask)
{
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if (sdl_mask == 0) {
*comp = 0;
*compMask = 0;
} else {
(*comp) = 0;
(*compMask) = 0;
while(!(sdl_mask & 1)) {
(*comp)++;
sdl_mask >>= 1;
}
while(sdl_mask & 1) {
(*compMask) = ((*compMask) << 1) | 1;
sdl_mask >>= 1;
}
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}
}
static XRenderPictFormat*
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PixelFormatEnumToXRenderPictFormat(SDL_Renderer * renderer, Uint32 format)
{
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XRenderPictFormat* pict_fmt = NULL;
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
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if (data->use_xrender) {
int bpp;
Uint32 Amask, Rmask, Gmask, Bmask;
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if(!SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
SDL_SetError("Unknown pixel format");
return NULL;
}
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XRenderPictFormat templ;
unsigned long mask = (PictFormatType | PictFormatDepth | PictFormatRed |
PictFormatRedMask | PictFormatGreen | PictFormatGreenMask |
PictFormatBlue | PictFormatBlueMask | PictFormatAlpha |
PictFormatAlphaMask);
templ.type = PictTypeDirect;
templ.depth = bpp;
SDLMaskToXRenderMask(Amask, &(templ.direct.alpha), &(templ.direct.alphaMask));
SDLMaskToXRenderMask(Rmask, &(templ.direct.red), &(templ.direct.redMask));
SDLMaskToXRenderMask(Gmask, &(templ.direct.green), &(templ.direct.greenMask));
SDLMaskToXRenderMask(Bmask, &(templ.direct.blue), &(templ.direct.blueMask));
pict_fmt = XRenderFindFormat(data->display, mask, &templ, 0);
}
return pict_fmt;
}
static Visual*
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PixelFormatEnumToVisual(SDL_Renderer * renderer, Uint32 format)
{
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X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
if (data->use_xrender) {
int bpp;
Uint32 Amask, Rmask, Gmask, Bmask;
SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
XVisualInfo vinfo_templ;
long vinfo_mask;
int nitems_return;
vinfo_mask = (VisualDepthMask | VisualRedMaskMask |
VisualGreenMaskMask | VisualBlueMaskMask);
vinfo_templ.depth = bpp;
vinfo_templ.red_mask = Rmask;
vinfo_templ.green_mask = Gmask;
vinfo_templ.blue_mask = Bmask;
XVisualInfo * ret = XGetVisualInfo(data->display, vinfo_mask,
&vinfo_templ, &nitems_return);
if (nitems_return) {
return ret[0].visual;
}
}
return NULL;
}
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static XRenderColor
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SDLColorToXRenderColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
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double rd, gd, bd, ad;
XRenderColor ret;
rd = r / 255.0;
gd = g / 255.0;
bd = b / 255.0;
ad = a / 255.0;
ret.red = (unsigned short) (rd * ad * 0xFFFF);
ret.green = (unsigned short) (gd * ad * 0xFFFF);
ret.blue = (unsigned short) (bd * ad * 0xFFFF);
ret.alpha = (unsigned short) (ad * 0xFFFF);
return ret;
}
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#endif
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static int
X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
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SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = window->display;
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X11_TextureData *data;
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int pitch_alignmask = ((renderdata->scanline_pad / 8) - 1);
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XGCValues gcv;
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data = (X11_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
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data->depth = renderdata->depth;
data->visual = renderdata->visual;
data->gc = renderdata->gc;
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texture->driverdata = data;
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
data->yuv =
SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
if (!data->yuv) {
return -1;
}
data->format = display->current_mode.format;
} else {
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
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if (renderdata->use_xrender)
{
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Uint32 Amask, Rmask, Gmask, Bmask;
SDL_PixelFormatEnumToMasks(texture->format, &(data->depth),
&Rmask, &Gmask, &Bmask, &Amask);
data->visual = PixelFormatEnumToVisual(renderer, texture->format);
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}
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else
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#endif
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{
if (texture->format != display->current_mode.format)
{
SDL_SetError("Texture format doesn't match window format");
return -1;
}
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}
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data->format = texture->format;
}
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if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING) {
#ifndef NO_SHARED_MEMORY
XShmSegmentInfo *shminfo = &data->shminfo;
shm_error = True;
if (SDL_X11_HAVE_SHM) {
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data->image =
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XShmCreateImage(renderdata->display, data->visual,
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data->depth, ZPixmap, NULL,
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shminfo, texture->w, texture->h);
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if (data->image) {
shminfo->shmid =
shmget(IPC_PRIVATE, texture->h * data->image->bytes_per_line,
IPC_CREAT | 0777);
if (shminfo->shmid >= 0) {
shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
shminfo->readOnly = False;
if (shminfo->shmaddr != (char *) -1) {
shm_error = False;
X_handler = XSetErrorHandler(shm_errhandler);
XShmAttach(renderdata->display, shminfo);
XSync(renderdata->display, False);
XSetErrorHandler(X_handler);
if (shm_error) {
XShmDetach(renderdata->display, shminfo);
shmdt(shminfo->shmaddr);
XDestroyImage(data->image);
XSync(renderdata->display, False);
}
else {
data->pixels = data->image->data = shminfo->shmaddr;
shmctl(shminfo->shmid, IPC_RMID, NULL);
data->pixmap =
XCreatePixmap(renderdata->display, renderdata->xwindow,
texture->w, texture->h, data->depth);
if (!data->pixmap) {
SDL_SetError("XCreatePixmap() failed");
return -1;
}
}
}
}
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}
}
if (shm_error) {
shminfo->shmaddr = NULL;
}
if (!data->image)
#endif /* not NO_SHARED_MEMORY */
{
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data->image =
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XCreateImage(renderdata->display, data->visual,
data->depth, ZPixmap, 0, NULL,
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texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8,
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0);
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if (!data->image) {
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X11_DestroyTexture(renderer, texture);
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SDL_SetError("XCreateImage() failed");
return -1;
}
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data->pixels = SDL_malloc(texture->h * data->image->bytes_per_line);
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if (!data->pixels) {
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X11_DestroyTexture(renderer, texture);
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SDL_OutOfMemory();
return -1;
}
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data->image->data = data->pixels;
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data->pixmap =
XCreatePixmap(renderdata->display, renderdata->xwindow, texture->w,
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texture->h, data->depth);
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if (data->pixmap == None) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("XCreatePixmap() failed");
return -1;
}
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}
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}
else {
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data->image =
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XCreateImage(renderdata->display, data->visual,
data->depth, ZPixmap, 0, NULL,
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texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8,
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0);
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if (!data->image) {
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X11_DestroyTexture(renderer, texture);
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SDL_SetError("XCreateImage() failed");
return -1;
}
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data->pixmap =
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XCreatePixmap(renderdata->display, renderdata->xwindow, texture->w,
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texture->h, data->depth);
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if (data->pixmap == None) {
968
X11_DestroyTexture(renderer, texture);
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SDL_SetError("XCreatePixmap() failed");
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return -1;
}
}
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data->pitch = data->image->bytes_per_line;
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#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
977
if(renderdata->use_xrender) {
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gcv.graphics_exposures = False;
data->gc =
XCreateGC(renderdata->display, data->pixmap, GCGraphicsExposures, &gcv);
if (!data->gc) {
SDL_SetError("XCreateGC() failed");
return -1;
}
data->picture_fmt =
PixelFormatEnumToXRenderPictFormat(renderer, texture->format);
if (data->picture_fmt == NULL) {
988
X11_DestroyTexture(renderer, texture);
989
SDL_SetError("Texture format not supported by driver");
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return -1;
}
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data->picture =
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XRenderCreatePicture(renderdata->display, data->pixmap,
data->picture_fmt, 0, NULL);
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if (!data->picture) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("XRenderCreatePicture() failed");
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return -1;
}
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data->modulated_pixmap =