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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"
#include "../SDL_rect_c.h"
#include "../SDL_pixels_c.h"
#include "../SDL_yuv_sw_c.h"
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/* 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);
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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XRenderPictFormat* picture_fmt;
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int blend_op;
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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
CheckXRender(Display *display, int *major, int *minor) {
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
CheckXFixes(Display *display, int *major, int *minor) {
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
CheckXDamage(Display *display, int *major, int *minor) {
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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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)) {
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_ARGB8888;
}
#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;
renderer->SetTextureBlendMode = X11_SetTextureBlendMode;
renderer->SetTextureScaleMode = X11_SetTextureScaleMode;
renderer->UpdateTexture = X11_UpdateTexture;
renderer->LockTexture = X11_LockTexture;
renderer->UnlockTexture = X11_UnlockTexture;
renderer->SetDrawBlendMode = X11_SetDrawBlendMode;
renderer->RenderDrawPoints = X11_RenderDrawPoints;
renderer->RenderDrawLines = X11_RenderDrawLines;
renderer->RenderDrawRects = X11_RenderDrawRects;
renderer->RenderFillRects = X11_RenderFillRects;
renderer->RenderCopy = X11_RenderCopy;
renderer->RenderReadPixels = X11_RenderReadPixels;
renderer->RenderWritePixels = X11_RenderWritePixels;
renderer->RenderPresent = X11_RenderPresent;
renderer->DestroyTexture = X11_DestroyTexture;
renderer->DestroyRenderer = X11_DestroyRenderer;
renderer->info = X11_RenderDriver.info;
renderer->window = window;
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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/* Add some blending modes to the list of supported blending modes */
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renderer->info.blend_modes |=
(SDL_BLENDMODE_BLEND | SDL_BLENDMODE_ADD | SDL_BLENDMODE_MASK);
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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,
window->w, window->h, 8);
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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, 0x00);
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XSetForeground(data->display, data->stencil_gc, 0x00);
XFillRectangle(data->display, data->stencil, data->stencil_gc,
0, 0, window->w, window->h);
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XSetForeground(data->display, data->stencil_gc, 0xFF);
data->stencil_pict =
XRenderCreatePicture(data->display, data->stencil,
XRenderFindStandardFormat(data->display,
PictStandardA8),
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);
data->xwindow_pict_fmt =
XRenderFindVisualFormat(data->display, data->visual);
data->xwindow_pict =
XRenderCreatePicture(data->display, data->xwindow,
data->xwindow_pict_fmt, 0, NULL);
}
#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;
}
603
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
604
if (data->use_xrender) {
605
data->pixmap_picts[i] =
606
607
608
609
XRenderCreatePicture(data->display,
data->pixmaps[i],
XRenderFindStandardFormat(data->display,
PictStandardARGB32),
610
0, None);
611
612
613
614
if (!data->pixmap_picts[i]) {
SDL_SetError("XRenderCreatePicture() failed");
return -1;
}
615
616
617
618
619
620
621
622
623
624
625
XRenderComposite(data->display,
PictOpClear,
data->pixmap_picts[i],
None,
data->pixmap_picts[i],
0, 0,
0, 0,
0, 0,
window->w, window->h);
}
626
#endif
627
628
629
}
if (n > 0) {
data->drawable = data->pixmaps[0];
630
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
631
data->drawable_pict = data->pixmap_picts[0];
632
#endif
633
634
635
636
637
638
}
data->current_pixmap = 0;
return 0;
}
639
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643
644
645
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647
648
649
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653
654
655
656
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712
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714
715
716
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
static void
SDLMaskToXRenderMask(Uint32 sdl_mask, short *comp, short *compMask) {
(*comp) = 0;
(*compMask) = 0;
while(!(sdl_mask & 1)) {
(*comp)++;
sdl_mask >>= 1;
}
while(sdl_mask & 1) {
(*compMask) = ((*compMask) << 1) | 1;
sdl_mask >>= 1;
}
}
static XRenderPictFormat*
PixelFormatEnumToXRenderPictFormat(SDL_Renderer * renderer, Uint32 format) {
XRenderPictFormat* pict_fmt = NULL;
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);
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*
PixelFormatEnumToVisual(SDL_Renderer * renderer, Uint32 format) {
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;
}
#endif
717
718
719
720
static int
X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
721
722
SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = window->display;
723
X11_TextureData *data;
724
int pitch_alignmask = ((renderdata->scanline_pad / 8) - 1);
725
726
XGCValues gcv;
727
728
729
730
731
data = (X11_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
732
733
734
data->depth = renderdata->depth;
data->visual = renderdata->visual;
data->gc = renderdata->gc;
735
736
737
738
739
740
741
742
743
744
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 {
745
746
747
748
/* If Xrender support is builtin we only need to check whether
Xrender is available at runtime. If it is available there
can be no BadMatch error since Xrender takes care of that.
*/
749
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
750
if (renderdata->use_xrender == SDL_FALSE) {
751
752
753
754
if (texture->format != display->current_mode.format) {
SDL_SetError("Texture format doesn't match window format");
return -1;
}
755
756
757
758
759
} else {
Uint32 Amask, Rmask, Gmask, Bmask;
SDL_PixelFormatEnumToMasks(texture->format, &(data->depth),
&Rmask, &Gmask, &Bmask, &Amask);
data->visual = PixelFormatEnumToVisual(renderer, texture->format);
760
761
}
#else
762
763
764
765
/* The image/pixmap depth must be the same as the window or you
get a BadMatch error when trying to putimage or copyarea.
This BadMatch error
*/
766
767
768
769
if (texture->format != display->current_mode.format) {
SDL_SetError("Texture format doesn't match window format");
return -1;
}
770
#endif
771
772
data->format = texture->format;
}
773
data->pitch = texture->w * SDL_BYTESPERPIXEL(data->format);
774
data->pitch = (data->pitch + pitch_alignmask) & ~pitch_alignmask;
775
776
777
778
779
780
781
782
if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING) {
#ifndef NO_SHARED_MEMORY
XShmSegmentInfo *shminfo = &data->shminfo;
shm_error = True;
if (SDL_X11_HAVE_SHM) {
783
784
785
shminfo->shmid =
shmget(IPC_PRIVATE, texture->h * data->pitch,
IPC_CREAT | 0777);
786
if (shminfo->shmid >= 0) {
787
shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
788
shminfo->readOnly = False;
789
if (shminfo->shmaddr != (char *) -1) {
790
791
792
shm_error = False;
X_handler = XSetErrorHandler(shm_errhandler);
XShmAttach(renderdata->display, shminfo);
793
XSync(renderdata->display, False);
794
795
796
797
798
799
800
801
802
803
XSetErrorHandler(X_handler);
if (shm_error) {
shmdt(shminfo->shmaddr);
}
}
shmctl(shminfo->shmid, IPC_RMID, NULL);
}
}
if (!shm_error) {
data->pixels = shminfo->shmaddr;
804
805
data->pixmap =
XCreatePixmap(renderdata->display, renderdata->xwindow, texture->w,
806
texture->h, data->depth);
807
808
809
810
811
if (data->pixmap == None) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("XCreatePixmap() failed");
return -1;
}
812
data->image =
813
814
XShmCreateImage(renderdata->display, data->visual,
data->depth, ZPixmap, shminfo->shmaddr,
815
shminfo, texture->w, texture->h);
816
817
if (!data->image) {
818
819
820
821
822
823
824
825
826
827
828
829
830
831
XShmDetach(renderdata->display, shminfo);
XSync(renderdata->display, False);
shmdt(shminfo->shmaddr);
shm_error = True;
}
}
if (shm_error) {
shminfo->shmaddr = NULL;
}
if (!data->image)
#endif /* not NO_SHARED_MEMORY */
{
data->pixels = SDL_malloc(texture->h * data->pitch);
if (!data->pixels) {
832
X11_DestroyTexture(renderer, texture);
833
834
835
836
SDL_OutOfMemory();
return -1;
}
837
838
data->pixmap =
XCreatePixmap(renderdata->display, renderdata->xwindow, texture->w,
839
texture->h, data->depth);
840
841
842
843
844
if (data->pixmap == None) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("XCreatePixmap() failed");
return -1;
}
845
data->image =
846
847
XCreateImage(renderdata->display, data->visual,
data->depth, ZPixmap, 0, data->pixels,
848
849
850
texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8,
data->pitch);
851
if (!data->image) {
852
X11_DestroyTexture(renderer, texture);
853
854
855
856
SDL_SetError("XCreateImage() failed");
return -1;
}
}
857
858
}
else {
859
data->pixmap =
860
XCreatePixmap(renderdata->display, renderdata->xwindow, texture->w,
861
texture->h, data->depth);
862
if (data->pixmap == None) {
863
X11_DestroyTexture(renderer, texture);
864
SDL_SetError("XCreatePixmap() failed");
865
866
return -1;
}
867
data->image =
868
869
XCreateImage(renderdata->display, data->visual,
data->depth, ZPixmap, 0, NULL,
870
871
texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8,
872
data->pitch);
873
if (!data->image) {
874
X11_DestroyTexture(renderer, texture);
875
876
877
878
SDL_SetError("XCreateImage() failed");
return -1;
}
}
879
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
880
if(renderdata->use_xrender) {
881
882
883
884
885
886
887
888
889
890
891
892
893
894
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) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("Texture format not supported by driver");
return -1;
}
895
data->picture =
896
897
XRenderCreatePicture(renderdata->display, data->pixmap,
data->picture_fmt, 0, NULL);
898
899
900
if (!data->picture) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("XRenderCreatePicture() failed");
901
902
return -1;
}
903
}
904
#endif
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
return 0;
}
static int
X11_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
} else {
*pixels = data->pixels;
*pitch = data->pitch;
return 0;
}
}
static int
X11_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
926
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
927
switch (texture->blendMode) {
928
case SDL_BLENDMODE_NONE:
929
930
931
932
933
934
935
936
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
data->blend_op = PictOpSrc;
return 0;
case SDL_BLENDMODE_BLEND:
data->blend_op = PictOpOver;
return 0;
case SDL_BLENDMODE_ADD:
data->blend_op = PictOpAdd;
937
return 0;
938
#endif
939
940
default:
SDL_Unsupported();
941
texture->blendMode = SDL_BLENDMODE_NONE;
942
943
944
945
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
texture->blendMode = SDL_BLENDMODE_BLEND;
data->blend_op = PictOpOver;
#endif
946
947
948
949
950
951
952
return -1;
}
}
static int
X11_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
953
954
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
955
956
957
switch (texture->scaleMode) {
case SDL_TEXTURESCALEMODE_NONE:
return 0;
958
959
960
961
962
963
case SDL_TEXTURESCALEMODE_FAST:
/* We can sort of fake it for streaming textures */
if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING) {
return 0;
}
/* Fall through to unsupported case */
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
default:
SDL_Unsupported();
texture->scaleMode = SDL_TEXTURESCALEMODE_NONE;
return -1;
}
return 0;
}
static int
X11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
return -1;
}
UpdateYUVTextureData(texture);
return 0;
} else {
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
if (data->pixels) {
Uint8 *src, *dst;
int row;
size_t length;
src = (Uint8 *) pixels;
dst =
(Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format);
length = rect->w * SDL_BYTESPERPIXEL(texture->format);
for (row = 0; row < rect->h; ++row) {
SDL_memcpy(dst, src, length);
src += pitch;
dst += data->pitch;