This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_x11render.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 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
#include "SDL_x11video.h"
#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);
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);
static int X11_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
Uint8 a, const SDL_Rect * rect);
static int X11_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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,
SDL_TEXTUREBLENDMODE_NONE,
SDL_TEXTURESCALEMODE_NONE,
0,
{0},
0,
0}
};
typedef struct
{
Display *display;
int screen;
Window window;
Pixmap pixmaps[3];
int current_pixmap;
Drawable drawable;
SDL_PixelFormat *format;
GC gc;
SDL_DirtyRectList dirty;
SDL_bool makedirty;
} X11_RenderData;
typedef struct
{
SDL_SW_YUVTexture *yuv;
Uint32 format;
Pixmap pixmap;
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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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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static int
X11_GetDepthFromPixelFormat(Uint32 format)
{
int depth, order;
depth = SDL_BITSPERPIXEL(format);
order = SDL_PIXELORDER(format);
if (depth == 32
&& (order == SDL_PACKEDORDER_XRGB || order == SDL_PACKEDORDER_RGBX
|| SDL_PACKEDORDER_XBGR || order == SDL_PACKEDORDER_BGRX)) {
depth = 24;
}
return depth;
}
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X11_GetPixelFormatFromDepth(Display * display, int screen, int depth, int bpp)
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{
XVisualInfo vinfo;
if (XMatchVisualInfo(display, screen, depth, DirectColor, &vinfo) ||
XMatchVisualInfo(display, screen, depth, TrueColor, &vinfo)) {
Uint32 Rmask, Gmask, Bmask, Amask;
Rmask = vinfo.visual->red_mask;
Gmask = vinfo.visual->green_mask;
Bmask = vinfo.visual->blue_mask;
if (vinfo.depth == 32) {
Amask = (0xFFFFFFFF & ~(Rmask | Gmask | Bmask));
} else {
Amask = 0;
}
return SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask);
}
/* No matching visual, try to pick a safe default */
switch (depth) {
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case 15:
return SDL_PIXELFORMAT_RGB555;
case 16:
return SDL_PIXELFORMAT_RGB565;
default:
break;
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}
return SDL_PIXELFORMAT_UNKNOWN;
}
void
X11_AddRenderDriver(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
SDL_RendererInfo *info = &X11_RenderDriver.info;
XPixmapFormatValues *pixmapFormats;
int i, n, bpp;
/* Query the available texture formats */
pixmapFormats = XListPixmapFormats(data->display, &n);
if (pixmapFormats) {
info->num_texture_formats = 0;
for (i = 0; i < n; ++i) {
Uint32 format;
if (pixmapFormats[i].depth == 24) {
bpp = pixmapFormats[i].bits_per_pixel;
} else {
bpp = pixmapFormats[i].depth;
}
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format =
X11_GetPixelFormatFromDepth(data->display,
DefaultScreen(data->display),
pixmapFormats[i].depth, bpp);
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if (format != SDL_PIXELFORMAT_UNKNOWN) {
info->texture_formats[info->num_texture_formats++] = format;
}
}
XFree(pixmapFormats);
if (info->num_texture_formats == 0) {
return;
}
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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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}
SDL_AddRenderDriver(0, &X11_RenderDriver);
}
SDL_Renderer *
X11_CreateRenderer(SDL_Window * window, Uint32 flags)
{
SDL_DisplayData *displaydata =
(SDL_DisplayData *) SDL_GetDisplayFromWindow(window)->driverdata;
SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer;
SDL_RendererInfo *info;
X11_RenderData *data;
XWindowAttributes attributes;
XGCValues gcv;
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;
data->window = windowdata->window;
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->RenderFill = X11_RenderFill;
renderer->RenderCopy = X11_RenderCopy;
renderer->RenderPresent = X11_RenderPresent;
renderer->DestroyTexture = X11_DestroyTexture;
renderer->DestroyRenderer = X11_DestroyRenderer;
renderer->info = X11_RenderDriver.info;
renderer->window = window->id;
renderer->driverdata = data;
renderer->info.flags = SDL_RENDERER_ACCELERATED;
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;
}
XGetWindowAttributes(data->display, data->window, &attributes);
for (i = 0; i < n; ++i) {
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data->pixmaps[i] =
XCreatePixmap(data->display, data->window, window->w, window->h,
attributes.depth);
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if (data->pixmaps[i] == None) {
X11_DestroyRenderer(renderer);
SDL_SetError("XCreatePixmap() failed");
return NULL;
}
}
if (n > 0) {
data->drawable = data->pixmaps[0];
data->makedirty = SDL_TRUE;
} else {
data->drawable = data->window;
data->makedirty = SDL_FALSE;
}
data->current_pixmap = 0;
/* Get the format of the window */
bpp = attributes.depth;
if (bpp == 24) {
XPixmapFormatValues *p = XListPixmapFormats(data->display, &n);
if (p) {
for (i = 0; i < n; ++i) {
if (p[i].depth == 24) {
bpp = p[i].bits_per_pixel;
break;
}
}
XFree(p);
}
}
Rmask = attributes.visual->red_mask;
Gmask = attributes.visual->green_mask;
Bmask = attributes.visual->blue_mask;
if (attributes.depth == 32) {
Amask = (0xFFFFFFFF & ~(Rmask | Gmask | Bmask));
} else {
Amask = 0;
}
data->format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
if (!data->format) {
X11_DestroyRenderer(renderer);
return NULL;
}
/* Create the drawing context */
gcv.graphics_exposures = False;
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data->gc =
XCreateGC(data->display, data->window, 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;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
XWindowAttributes attributes;
int i, n;
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;
}
}
XGetWindowAttributes(data->display, data->window, &attributes);
for (i = 0; i < n; ++i) {
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data->pixmaps[i] =
XCreatePixmap(data->display, data->window, window->w, window->h,
attributes.depth);
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if (data->pixmaps[i] == None) {
SDL_SetError("XCreatePixmap() failed");
return -1;
}
}
if (n > 0) {
data->drawable = data->pixmaps[0];
}
data->current_pixmap = 0;
return 0;
}
static int
X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
X11_TextureData *data;
XWindowAttributes attributes;
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int depth;
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data = (X11_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
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 {
data->format = texture->format;
}
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data->pitch = texture->w * SDL_BYTESPERPIXEL(data->format);
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XGetWindowAttributes(renderdata->display, renderdata->window,
&attributes);
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depth = X11_GetDepthFromPixelFormat(data->format);
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/* The image/pixmap depth must be the same as the window or you
get a BadMatch error when trying to putimage or copyarea.
*/
if (depth != attributes.depth) {
X11_DestroyTexture(renderer, texture);
SDL_SetError("Texture format doesn't match window format");
return -1;
}
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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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shminfo->shmid =
shmget(IPC_PRIVATE, texture->h * data->pitch,
IPC_CREAT | 0777);
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if (shminfo->shmid >= 0) {
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shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
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shminfo->readOnly = False;
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if (shminfo->shmaddr != (char *) -1) {
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shm_error = False;
X_handler = XSetErrorHandler(shm_errhandler);
XShmAttach(renderdata->display, shminfo);
XSync(renderdata->display, True);
XSetErrorHandler(X_handler);
if (shm_error) {
shmdt(shminfo->shmaddr);
}
}
shmctl(shminfo->shmid, IPC_RMID, NULL);
}
}
if (!shm_error) {
data->pixels = shminfo->shmaddr;
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data->image =
XShmCreateImage(renderdata->display, attributes.visual, depth,
ZPixmap, shminfo->shmaddr, shminfo,
texture->w, texture->h);
if (!data->image) {
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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) {
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X11_DestroyTexture(renderer, texture);
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SDL_OutOfMemory();
return -1;
}
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data->image =
XCreateImage(renderdata->display, attributes.visual, depth,
ZPixmap, 0, data->pixels, texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8,
data->pitch);
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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;
}
}
} else {
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data->pixmap =
XCreatePixmap(renderdata->display, renderdata->window, texture->w,
texture->h, depth);
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if (data->pixmap == None) {
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X11_DestroyTexture(renderer, texture);
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SDL_SetError("XCteatePixmap() failed");
return -1;
}
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data->image =
XCreateImage(renderdata->display, attributes.visual, depth,
ZPixmap, 0, NULL, texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8, data->pitch);
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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;
}
}
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)
{
switch (texture->blendMode) {
case SDL_TEXTUREBLENDMODE_NONE:
return 0;
default:
SDL_Unsupported();
texture->blendMode = SDL_TEXTUREBLENDMODE_NONE;
return -1;
}
}
static int
X11_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
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X11_TextureData *data = (X11_TextureData *) texture->driverdata;
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switch (texture->scaleMode) {
case SDL_TEXTURESCALEMODE_NONE:
return 0;
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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 */
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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;
}
} else {
data->image->width = rect->w;
data->image->height = rect->h;
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data->image->data = (char *) pixels;
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data->image->bytes_per_line = pitch;
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XPutImage(renderdata->display, data->pixmap, renderdata->gc,
data->image, 0, 0, rect->x, rect->y, rect->w, rect->h);
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}
return 0;
}
}
static int
X11_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
pitch);
} else if (data->pixels) {
*pixels =
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = data->pitch;
return 0;
} else {
SDL_SetError("No pixels available");
return -1;
}
}
static void
X11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
SDL_SW_UnlockYUVTexture(data->yuv);
UpdateYUVTextureData(texture);
}
}
static int
X11_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b, Uint8 a,
const SDL_Rect * rect)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
unsigned long foreground;
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, rect);
}
foreground = SDL_MapRGBA(data->format, r, g, b, a);
XSetForeground(data->display, data->gc, foreground);
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XDrawRectangle(data->display, data->drawable, data->gc, rect->x, rect->y,
rect->w, rect->h);
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return 0;
}
static int
X11_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
X11_TextureData *texturedata = (X11_TextureData *) texture->driverdata;
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, dstrect);
}
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if (srcrect->w == dstrect->w && srcrect->h == dstrect->h) {
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#ifndef NO_SHARED_MEMORY
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if (texturedata->shminfo.shmaddr) {
XShmPutImage(data->display, data->drawable, data->gc,
texturedata->image, srcrect->x, srcrect->y,
dstrect->x, dstrect->y, srcrect->w, srcrect->h,
False);
} else
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if (texturedata->pixels) {
XPutImage(data->display, data->drawable, data->gc,
texturedata->image, srcrect->x, srcrect->y, dstrect->x,
dstrect->y, srcrect->w, srcrect->h);
} else {
XCopyArea(data->display, texturedata->pixmap, data->drawable,
data->gc, srcrect->x, srcrect->y, dstrect->w,
dstrect->h, srcrect->x, srcrect->y);
}
} else if (texturedata->yuv
|| texture->access == SDL_TEXTUREACCESS_STREAMING) {
SDL_Surface src, dst;
SDL_PixelFormat fmt;
SDL_Rect rect;
XImage *image = texturedata->scaling_image;
if (!image) {
XWindowAttributes attributes;
int depth;
void *pixels;
int pitch;
XGetWindowAttributes(data->display, data->window, &attributes);
pitch = dstrect->w * SDL_BYTESPERPIXEL(texturedata->format);
pixels = SDL_malloc(dstrect->h * pitch);
if (!pixels) {
SDL_OutOfMemory();
return -1;
}
depth = X11_GetDepthFromPixelFormat(texturedata->format);
image =
XCreateImage(data->display, attributes.visual, depth, ZPixmap,
0, pixels, dstrect->w, dstrect->h,
SDL_BYTESPERPIXEL(texturedata->format) * 8,
pitch);
if (!image) {
SDL_SetError("XCreateImage() failed");
return -1;
}
texturedata->scaling_image = image;
} else if (image->width != dstrect->w || image->height != dstrect->h
|| !image->data) {
image->width = dstrect->w;
image->height = dstrect->h;
image->bytes_per_line =
image->width * SDL_BYTESPERPIXEL(texturedata->format);
image->data =
(char *) SDL_realloc(image->data,
image->height * image->bytes_per_line);
if (!image->data) {
SDL_OutOfMemory();
return -1;
}
}
/* Set up fake surfaces for SDL_SoftStretch() */
src.format = &fmt;
src.w = texture->w;
src.h = texture->h;
#ifndef NO_SHARED_MEMORY
if (texturedata->shminfo.shmaddr) {
src.pixels = texturedata->shminfo.shmaddr;
} else
#endif
src.pixels = texturedata->pixels;
src.pitch = texturedata->pitch;
dst.format = &fmt;
dst.w = image->width;
dst.h = image->height;
dst.pixels = image->data;
dst.pitch = image->bytes_per_line;
fmt.BytesPerPixel = SDL_BYTESPERPIXEL(texturedata->format);
rect.x = 0;
rect.y = 0;
rect.w = dstrect->w;
rect.h = dstrect->h;
if (SDL_SoftStretch(&src, srcrect, &dst, &rect) < 0) {
return -1;
}
XPutImage(data->display, data->drawable, data->gc, image, 0, 0,
dstrect->x, dstrect->y, dstrect->w, dstrect->h);
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XCopyArea(data->display, texturedata->pixmap, data->drawable,
data->gc, srcrect->x, srcrect->y, dstrect->w, dstrect->h,
srcrect->x, srcrect->y);
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}
return 0;
}
static void
X11_RenderPresent(SDL_Renderer * renderer)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
SDL_DirtyRect *dirty;
/* Send the data to the display */
if (!(renderer->info.flags & SDL_RENDERER_SINGLEBUFFER)) {
for (dirty = data->dirty.list; dirty; dirty = dirty->next) {
const SDL_Rect *rect = &dirty->rect;
XCopyArea(data->display, data->drawable, data->window,
data->gc, rect->x, rect->y, rect->w, rect->h,
rect->x, rect->y);
}
SDL_ClearDirtyRects(&data->dirty);
}
XSync(data->display, False);
/* Update the flipping chain, if any */
if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
data->current_pixmap = (data->current_pixmap + 1) % 2;
data->drawable = data->pixmaps[data->current_pixmap];
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
data->current_pixmap = (data->current_pixmap + 1) % 3;
data->drawable = data->pixmaps[data->current_pixmap];
}
}
static void
X11_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (!data) {
return;
}
if (data->yuv) {
SDL_SW_DestroyYUVTexture(data->yuv);
}
if (data->pixmap != None) {
XFreePixmap(renderdata->display, data->pixmap);
}
if (data->image) {
data->image->data = NULL;
XDestroyImage(data->image);
}
#ifndef NO_SHARED_MEMORY
if (data->shminfo.shmaddr) {
XShmDetach(renderdata->display, &data->shminfo);
XSync(renderdata->display, False);
shmdt(data->shminfo.shmaddr);
data->pixels = NULL;
}
#endif
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if (data->scaling_image) {
SDL_free(data->scaling_image->data);
data->scaling_image->data = NULL;
XDestroyImage(data->scaling_image);
}
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if (data->pixels) {
SDL_free(data->pixels);
}
SDL_free(data);
texture->driverdata = NULL;
}
static void
X11_DestroyRenderer(SDL_Renderer * renderer)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
int i;
if (data) {
for (i = 0; i < SDL_arraysize(data->pixmaps); ++i) {
if (data->pixmaps[i] != None) {
XFreePixmap(data->display, data->pixmaps[i]);
}
}
if (data->format) {
SDL_FreeFormat(data->format);
}
if (data->gc) {
XFreeGC(data->display, data->gc);
}
SDL_FreeDirtyRects(&data->dirty);
SDL_free(data);
}
SDL_free(renderer);
}
#endif /* SDL_VIDEO_RENDER_X11 */
/* vi: set ts=4 sw=4 expandtab: */