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SDL_DirectFB_render.c
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SDL_DirectFB_render.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2010 Sam Lantinga
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
SDL1.3 implementation by couriersud@arcor.de
*/
#include "SDL_config.h"
#include "SDL_DirectFB_video.h"
#include "SDL_DirectFB_render.h"
#include "../SDL_rect_c.h"
#include "../SDL_yuv_sw_c.h"
/* the following is not yet tested ... */
#define USE_DISPLAY_PALETTE (0)
/* GDI renderer implementation */
static SDL_Renderer *DirectFB_CreateRenderer(SDL_Window * window,
Uint32 flags);
static int DirectFB_DisplayModeChanged(SDL_Renderer * renderer);
static int DirectFB_ActivateRenderer(SDL_Renderer * renderer);
static int DirectFB_CreateTexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static int DirectFB_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture,
void **pixels, int *pitch);
static int DirectFB_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors,
int firstcolor, int ncolors);
static int DirectFB_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
SDL_Color * colors,
int firstcolor, int ncolors);
static int DirectFB_SetTextureAlphaMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int DirectFB_SetTextureColorMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int DirectFB_SetTextureBlendMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int DirectFB_UpdateTexture(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * rect,
const void *pixels, int pitch);
static int DirectFB_LockTexture(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch);
static void DirectFB_UnlockTexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void DirectFB_DirtyTexture(SDL_Renderer * renderer,
SDL_Texture * texture, int numrects,
const SDL_Rect * rects);
static int DirectFB_SetDrawBlendMode(SDL_Renderer * renderer);
static int DirectFB_RenderDrawPoints(SDL_Renderer * renderer,
const SDL_Point * points, int count);
static int DirectFB_RenderDrawLines(SDL_Renderer * renderer,
const SDL_Point * points, int count);
static int DirectFB_RenderDrawRects(SDL_Renderer * renderer,
const SDL_Rect ** rects, int count);
static int DirectFB_RenderFillRects(SDL_Renderer * renderer,
const SDL_Rect ** rects, int count);
static int DirectFB_RenderCopy(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_Rect * dstrect);
static void DirectFB_RenderPresent(SDL_Renderer * renderer);
static void DirectFB_DestroyTexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void DirectFB_DestroyRenderer(SDL_Renderer * renderer);
#define SDL_DFB_WINDOWSURFACE(win) IDirectFBSurface *destsurf = ((DFB_WindowData *) ((win)->driverdata))->surface;
SDL_RenderDriver DirectFB_RenderDriver = {
DirectFB_CreateRenderer,
{
"directfb",
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_PRESENTDISCARD |
SDL_RENDERER_ACCELERATED),
(SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_COLOR |
SDL_TEXTUREMODULATE_ALPHA),
(SDL_BLENDMODE_NONE | SDL_BLENDMODE_MASK | SDL_BLENDMODE_BLEND |
SDL_BLENDMODE_ADD | SDL_BLENDMODE_MOD),
14,
{
SDL_PIXELFORMAT_INDEX4LSB,
SDL_PIXELFORMAT_INDEX8,
SDL_PIXELFORMAT_RGB332,
SDL_PIXELFORMAT_RGB555,
SDL_PIXELFORMAT_RGB565,
SDL_PIXELFORMAT_RGB888,
SDL_PIXELFORMAT_ARGB8888,
SDL_PIXELFORMAT_ARGB4444,
SDL_PIXELFORMAT_ARGB1555,
SDL_PIXELFORMAT_RGB24,
SDL_PIXELFORMAT_YV12,
SDL_PIXELFORMAT_IYUV,
SDL_PIXELFORMAT_YUY2,
SDL_PIXELFORMAT_UYVY},
0,
0}
};
typedef struct
{
SDL_Window *window;
DFBSurfaceFlipFlags flipflags;
int isyuvdirect;
int size_changed;
int lastBlendMode;
DFBSurfaceBlittingFlags blitFlags;
DFBSurfaceDrawingFlags drawFlags;
} DirectFB_RenderData;
typedef struct
{
IDirectFBSurface *surface;
Uint32 format;
void *pixels;
int pitch;
IDirectFBPalette *palette;
SDL_VideoDisplay *display;
SDL_DirtyRectList dirty;
#if (DFB_VERSION_ATLEAST(1,2,0))
DFBSurfaceRenderOptions render_options;
#endif
} DirectFB_TextureData;
static __inline__ void
SDLtoDFBRect(const SDL_Rect * sr, DFBRectangle * dr)
{
dr->x = sr->x;
dr->y = sr->y;
dr->h = sr->h;
dr->w = sr->w;
}
static int
TextureHasAlpha(DirectFB_TextureData * data)
{
/* Drawing primitive ? */
if (!data)
return 0;
switch (data->format) {
case SDL_PIXELFORMAT_INDEX4LSB:
case SDL_PIXELFORMAT_ARGB4444:
case SDL_PIXELFORMAT_ARGB1555:
case SDL_PIXELFORMAT_ARGB8888:
case SDL_PIXELFORMAT_RGBA8888:
case SDL_PIXELFORMAT_ABGR8888:
case SDL_PIXELFORMAT_BGRA8888:
case SDL_PIXELFORMAT_ARGB2101010:
return 1;
default:
return 0;
}
}
static void
SetBlendMode(DirectFB_RenderData * data, int blendMode,
DirectFB_TextureData * source)
{
SDL_DFB_WINDOWSURFACE(data->window);
//FIXME: check for format change
if (1 || data->lastBlendMode != blendMode) {
switch (blendMode) {
case SDL_BLENDMODE_NONE:
/**< No blending */
data->blitFlags = DSBLIT_NOFX;
data->drawFlags = DSDRAW_NOFX;
SDL_DFB_CHECK(destsurf->SetSrcBlendFunction(destsurf, DSBF_ONE));
SDL_DFB_CHECK(destsurf->SetDstBlendFunction(destsurf, DSBF_ZERO));
break;
case SDL_BLENDMODE_MASK:
data->blitFlags = DSBLIT_BLEND_ALPHACHANNEL;
data->drawFlags = DSDRAW_BLEND;
SDL_DFB_CHECK(destsurf->SetSrcBlendFunction(destsurf, DSBF_SRCALPHA));
SDL_DFB_CHECK(destsurf->SetDstBlendFunction(destsurf, DSBF_INVSRCALPHA));
break;
case SDL_BLENDMODE_BLEND:
data->blitFlags = DSBLIT_BLEND_ALPHACHANNEL;
data->drawFlags = DSDRAW_BLEND;
SDL_DFB_CHECK(destsurf->SetSrcBlendFunction(destsurf, DSBF_SRCALPHA));
SDL_DFB_CHECK(destsurf->SetDstBlendFunction(destsurf, DSBF_INVSRCALPHA));
break;
case SDL_BLENDMODE_ADD:
data->blitFlags = DSBLIT_BLEND_ALPHACHANNEL;
data->drawFlags = DSDRAW_BLEND;
// FIXME: SRCALPHA kills performance on radeon ...
// It will be cheaper to copy the surface to
// a temporay surface and premultiply
if (source && TextureHasAlpha(source))
SDL_DFB_CHECK(destsurf->SetSrcBlendFunction(destsurf, DSBF_SRCALPHA));
else
SDL_DFB_CHECK(destsurf->SetSrcBlendFunction(destsurf, DSBF_ONE));
SDL_DFB_CHECK(destsurf->SetDstBlendFunction(destsurf, DSBF_ONE));
break;
case SDL_BLENDMODE_MOD:
data->blitFlags = DSBLIT_BLEND_ALPHACHANNEL;
data->drawFlags = DSDRAW_BLEND;
SDL_DFB_CHECK(destsurf->SetSrcBlendFunction(destsurf, DSBF_DESTCOLOR));
SDL_DFB_CHECK(destsurf->SetDstBlendFunction(destsurf, DSBF_ZERO));
break;
}
data->lastBlendMode = blendMode;
}
}
void
DirectFB_AddRenderDriver(_THIS)
{
int i;
for (i = 0; i < _this->num_displays; ++i) {
SDL_AddRenderDriver(&_this->displays[i], &DirectFB_RenderDriver);
}
}
static int
DisplayPaletteChanged(void *userdata, SDL_Palette * palette)
{
#if USE_DISPLAY_PALETTE
DirectFB_RenderData *data = (DirectFB_RenderData *) userdata;
SDL_DFB_WINDOWSURFACE(data->window);
IDirectFBPalette *surfpal;
int i;
int ncolors;
DFBColor entries[256];
SDL_DFB_CHECKERR(destsurf->GetPalette(destsurf, &surfpal));
/* FIXME: number of colors */
ncolors = (palette->ncolors < 256 ? palette->ncolors : 256);
for (i = 0; i < ncolors; ++i) {
entries[i].r = palette->colors[i].r;
entries[i].g = palette->colors[i].g;
entries[i].b = palette->colors[i].b;
entries[i].a = palette->colors[i].unused;
}
SDL_DFB_CHECKERR(surfpal->SetEntries(surfpal, entries, ncolors, 0));
return 0;
error:
#else
SDL_Unsupported();
#endif
return -1;
}
SDL_Renderer *
DirectFB_CreateRenderer(SDL_Window * window, Uint32 flags)
{
SDL_DFB_WINDOWDATA(window);
SDL_VideoDisplay *display = window->display;
SDL_Renderer *renderer = NULL;
DirectFB_RenderData *data = NULL;
DFBSurfaceCapabilities scaps;
char *p;
SDL_DFB_CALLOC(renderer, 1, sizeof(*renderer));
SDL_DFB_CALLOC(data, 1, sizeof(*data));
renderer->DisplayModeChanged = DirectFB_DisplayModeChanged;
renderer->ActivateRenderer = DirectFB_ActivateRenderer;
renderer->CreateTexture = DirectFB_CreateTexture;
renderer->QueryTexturePixels = DirectFB_QueryTexturePixels;
renderer->SetTexturePalette = DirectFB_SetTexturePalette;
renderer->GetTexturePalette = DirectFB_GetTexturePalette;
renderer->SetTextureAlphaMod = DirectFB_SetTextureAlphaMod;
renderer->SetTextureColorMod = DirectFB_SetTextureColorMod;
renderer->SetTextureBlendMode = DirectFB_SetTextureBlendMode;
renderer->UpdateTexture = DirectFB_UpdateTexture;
renderer->LockTexture = DirectFB_LockTexture;
renderer->UnlockTexture = DirectFB_UnlockTexture;
renderer->DirtyTexture = DirectFB_DirtyTexture;
renderer->RenderDrawPoints = DirectFB_RenderDrawPoints;
renderer->RenderDrawLines = DirectFB_RenderDrawLines;
/* SetDrawColor - no needed */
renderer->SetDrawBlendMode = DirectFB_SetDrawBlendMode;
renderer->RenderFillRects = DirectFB_RenderFillRects;
renderer->RenderDrawRects = DirectFB_RenderDrawRects;
/* RenderDrawEllipse - no reference implementation yet */
/* RenderFillEllipse - no reference implementation yet */
renderer->RenderCopy = DirectFB_RenderCopy;
renderer->RenderPresent = DirectFB_RenderPresent;
/* RenderReadPixels is difficult to implement */
/* RenderWritePixels is difficult to implement */
renderer->DestroyTexture = DirectFB_DestroyTexture;
renderer->DestroyRenderer = DirectFB_DestroyRenderer;
renderer->info = DirectFB_RenderDriver.info;
renderer->window = window; /* SDL window */
renderer->driverdata = data;
renderer->info.flags =
SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTDISCARD;
data->window = window;
data->flipflags = DSFLIP_PIPELINE | DSFLIP_BLIT;
if (flags & SDL_RENDERER_PRESENTVSYNC) {
data->flipflags |= DSFLIP_WAITFORSYNC | DSFLIP_ONSYNC;
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
} else
data->flipflags |= DSFLIP_ONSYNC;
SDL_DFB_CHECKERR(windata->surface->
GetCapabilities(windata->surface, &scaps));
if (scaps & DSCAPS_DOUBLE)
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
else if (scaps & DSCAPS_TRIPLE)
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
else
renderer->info.flags |= SDL_RENDERER_SINGLEBUFFER;
data->isyuvdirect = 0; /* default is off! */
p = SDL_getenv(DFBENV_USE_YUV_DIRECT);
if (p)
data->isyuvdirect = atoi(p);
/* Set up a palette watch on the display palette */
if (display->palette) {
SDL_AddPaletteWatch(display->palette, DisplayPaletteChanged, data);
}
return renderer;
error:
SDL_DFB_FREE(renderer);
SDL_DFB_FREE(data);
return NULL;
}
static DFBSurfacePixelFormat
SDLToDFBPixelFormat(Uint32 format)
{
switch (format) {
case SDL_PIXELFORMAT_INDEX4LSB:
return DSPF_ALUT44;
case SDL_PIXELFORMAT_INDEX8:
return DSPF_LUT8;
case SDL_PIXELFORMAT_RGB332:
return DSPF_RGB332;
case SDL_PIXELFORMAT_RGB555:
return DSPF_ARGB1555;
case SDL_PIXELFORMAT_ARGB4444:
return DSPF_ARGB4444;
case SDL_PIXELFORMAT_ARGB1555:
return DSPF_ARGB1555;
case SDL_PIXELFORMAT_RGB565:
return DSPF_RGB16;
case SDL_PIXELFORMAT_RGB24:
return DSPF_RGB24;
case SDL_PIXELFORMAT_RGB888:
return DSPF_RGB32;
case SDL_PIXELFORMAT_ARGB8888:
return DSPF_ARGB;
case SDL_PIXELFORMAT_YV12:
return DSPF_YV12; /* Planar mode: Y + V + U (3 planes) */
case SDL_PIXELFORMAT_IYUV:
return DSPF_I420; /* Planar mode: Y + U + V (3 planes) */
case SDL_PIXELFORMAT_YUY2:
return DSPF_YUY2; /* Packed mode: Y0+U0+Y1+V0 (1 plane) */
case SDL_PIXELFORMAT_UYVY:
return DSPF_UYVY; /* Packed mode: U0+Y0+V0+Y1 (1 plane) */
case SDL_PIXELFORMAT_YVYU:
return DSPF_UNKNOWN; /* Packed mode: Y0+V0+Y1+U0 (1 plane) */
case SDL_PIXELFORMAT_INDEX1LSB:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_INDEX1MSB:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_INDEX4MSB:
return DSPF_UNKNOWN;
#if (DFB_VERSION_ATLEAST(1,2,0))
case SDL_PIXELFORMAT_RGB444:
return DSPF_RGB444;
#endif
case SDL_PIXELFORMAT_BGR24:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_BGR888:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_RGBA8888:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_ABGR8888:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_BGRA8888:
return DSPF_UNKNOWN;
case SDL_PIXELFORMAT_ARGB2101010:
return DSPF_UNKNOWN;
default:
return DSPF_UNKNOWN;
}
}
static int
DirectFB_ActivateRenderer(SDL_Renderer * renderer)
{
SDL_DFB_RENDERERDATA(renderer);
SDL_Window *window = renderer->window;
SDL_DFB_WINDOWDATA(window);
if (renddata->size_changed || windata->wm_needs_redraw) {
// DirectFB_AdjustWindowSurface(window);
}
return 0;
}
static int
DirectFB_DisplayModeChanged(SDL_Renderer * renderer)
{
SDL_DFB_RENDERERDATA(renderer);
renddata->size_changed = SDL_TRUE;
return 0;
}
static int
DirectFB_AcquireVidLayer(SDL_Renderer * renderer, SDL_Texture * texture)
{
SDL_DFB_RENDERERDATA(renderer);
SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = window->display;
SDL_DFB_DEVICEDATA(display->device);
DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
DirectFB_TextureData *data = texture->driverdata;
DFBDisplayLayerConfig layconf;
DFBResult ret;
if (renddata->isyuvdirect && (dispdata->vidID >= 0)
&& (!dispdata->vidIDinuse)
&& SDL_ISPIXELFORMAT_FOURCC(data->format)) {
layconf.flags =
DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |
DLCONF_SURFACE_CAPS;
layconf.width = texture->w;
layconf.height = texture->h;
layconf.pixelformat = SDLToDFBPixelFormat(data->format);
layconf.surface_caps = DSCAPS_VIDEOONLY | DSCAPS_DOUBLE;
SDL_DFB_CHECKERR(devdata->dfb->GetDisplayLayer(devdata->dfb,
dispdata->vidID,
&dispdata->vidlayer));
SDL_DFB_CHECKERR(dispdata->
vidlayer->SetCooperativeLevel(dispdata->vidlayer,
DLSCL_EXCLUSIVE));
if (devdata->use_yuv_underlays) {
ret = SDL_DFB_CHECK(dispdata->vidlayer->SetLevel(dispdata->vidlayer, -1));
if (ret != DFB_OK)
SDL_DFB_DEBUG("Underlay Setlevel not supported\n");
}
SDL_DFB_CHECKERR(dispdata->
vidlayer->SetConfiguration(dispdata->vidlayer,
&layconf));
SDL_DFB_CHECKERR(dispdata->
vidlayer->GetSurface(dispdata->vidlayer,
&data->surface));
dispdata->vidIDinuse = 1;
data->display = display;
return 0;
}
return 1;
error:
if (dispdata->vidlayer) {
SDL_DFB_RELEASE(data->surface);
SDL_DFB_CHECKERR(dispdata->
vidlayer->SetCooperativeLevel(dispdata->vidlayer,
DLSCL_ADMINISTRATIVE));
SDL_DFB_RELEASE(dispdata->vidlayer);
}
return 1;
}
static int
DirectFB_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
SDL_Window *window = renderer->window;
SDL_VideoDisplay *display = window->display;
SDL_DFB_DEVICEDATA(display->device);
DirectFB_TextureData *data;
DFBSurfaceDescription dsc;
DFBSurfacePixelFormat pixelformat;
SDL_DFB_CALLOC(data, 1, sizeof(*data));
texture->driverdata = data;
/* find the right pixelformat */
pixelformat = SDLToDFBPixelFormat(texture->format);
if (pixelformat == DSPF_UNKNOWN) {
SDL_SetError("Unknown pixel format %d\n", data->format);
goto error;
}
data->format = texture->format;
data->pitch = texture->w * DFB_BYTES_PER_PIXEL(pixelformat);
if (DirectFB_AcquireVidLayer(renderer, texture) != 0) {
/* fill surface description */
dsc.flags =
DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
dsc.width = texture->w;
dsc.height = texture->h;
/* <1.2 Never use DSCAPS_VIDEOONLY here. It kills performance
* No DSCAPS_SYSTEMONLY either - let dfb decide
* 1.2: DSCAPS_SYSTEMONLY boosts performance by factor ~8
* Depends on other settings as well. Let dfb decide.
*/
dsc.caps = DSCAPS_PREMULTIPLIED;
#if 0
if (texture->access == SDL_TEXTUREACCESS_STREAMING)
dsc.caps |= DSCAPS_SYSTEMONLY;
else
dsc.caps |= DSCAPS_VIDEOONLY;
#endif
dsc.pixelformat = pixelformat;
data->pixels = NULL;
/* Create the surface */
SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc,
&data->surface));
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
SDL_DFB_CHECKERR(data->surface->GetPalette(data->surface,
&data->palette));
}
}
#if (DFB_VERSION_ATLEAST(1,2,0))
data->render_options = DSRO_NONE;
#endif
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
/* 3 plane YUVs return 1 bpp, but we need more space for other planes */
if(texture->format == SDL_PIXELFORMAT_YV12 ||
texture->format == SDL_PIXELFORMAT_IYUV) {
SDL_DFB_CALLOC(data->pixels, 1, (texture->h * data->pitch * 3 + texture->h * data->pitch * 3 % 2) / 2);
} else {
SDL_DFB_CALLOC(data->pixels, 1, texture->h * data->pitch);
}
}
return 0;
error:
SDL_DFB_RELEASE(data->palette);
SDL_DFB_RELEASE(data->surface);
SDL_DFB_FREE(texture->driverdata);
return -1;
}
static int
DirectFB_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels, int *pitch)
{
DirectFB_TextureData *texturedata =
(DirectFB_TextureData *) texture->driverdata;
if (texturedata->display) {
return -1;
} else {
*pixels = texturedata->pixels;
*pitch = texturedata->pitch;
}
return 0;
}
static int
DirectFB_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors)
{
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
DFBColor entries[256];
int i;
for (i = 0; i < ncolors; ++i) {
entries[i].r = colors[i].r;
entries[i].g = colors[i].g;
entries[i].b = colors[i].b;
entries[i].a = 0xFF;
}
SDL_DFB_CHECKERR(data->
palette->SetEntries(data->palette, entries, ncolors,
firstcolor));
return 0;
} else {
SDL_SetError("YUV textures don't have a palette");
return -1;
}
error:
return -1;
}
static int
DirectFB_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors)
{
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
if (SDL_ISPIXELFORMAT_INDEXED(data->format)
&& !SDL_ISPIXELFORMAT_FOURCC(data->format)) {
DFBColor entries[256];
int i;
SDL_DFB_CHECKERR(data->
palette->GetEntries(data->palette, entries, ncolors,
firstcolor));
for (i = 0; i < ncolors; ++i) {
colors[i].r = entries[i].r;
colors[i].g = entries[i].g;
colors[i].b = entries[i].b;
colors->unused = SDL_ALPHA_OPAQUE;
}
return 0;
} else {
SDL_SetError("YUV textures don't have a palette");
return -1;
}
error:
return -1;
}
static int
DirectFB_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
{
return 0;
}
static int
DirectFB_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
{
return 0;
}
static int
DirectFB_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
switch (texture->blendMode) {
case SDL_BLENDMODE_NONE:
case SDL_BLENDMODE_MASK:
case SDL_BLENDMODE_BLEND:
case SDL_BLENDMODE_ADD:
case SDL_BLENDMODE_MOD:
return 0;
default:
SDL_Unsupported();
texture->blendMode = SDL_BLENDMODE_NONE;
return -1;
}
}
static int
DirectFB_SetDrawBlendMode(SDL_Renderer * renderer)
{
switch (renderer->blendMode) {
case SDL_BLENDMODE_NONE:
case SDL_BLENDMODE_MASK:
case SDL_BLENDMODE_BLEND:
case SDL_BLENDMODE_ADD:
case SDL_BLENDMODE_MOD:
return 0;
default:
SDL_Unsupported();
renderer->blendMode = SDL_BLENDMODE_NONE;
return -1;
}
}
static int
DirectFB_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
#if (DFB_VERSION_ATLEAST(1,2,0))
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
switch (texture->scaleMode) {
case SDL_SCALEMODE_NONE:
case SDL_SCALEMODE_FAST:
data->render_options = DSRO_NONE;
break;
case SDL_SCALEMODE_SLOW:
data->render_options = DSRO_SMOOTH_UPSCALE | DSRO_SMOOTH_DOWNSCALE;
break;
case SDL_SCALEMODE_BEST:
data->render_options =
DSRO_SMOOTH_UPSCALE | DSRO_SMOOTH_DOWNSCALE | DSRO_ANTIALIAS;
break;
default:
SDL_Unsupported();
data->render_options = DSRO_NONE;
texture->scaleMode = SDL_SCALEMODE_NONE;
return -1;
}
#endif
return 0;
}
static int
DirectFB_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
Uint8 *dpixels;
int dpitch;
Uint8 *src, *dst;
int row;
size_t length;
int bpp = DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(texture->format));
// FIXME: SDL_BYTESPERPIXEL(texture->format) broken for yuv yv12 3 planes
SDL_DFB_CHECKERR(data->surface->Lock(data->surface,
DSLF_WRITE | DSLF_READ,
((void **) &dpixels), &dpitch));
src = (Uint8 *) pixels;
dst = (Uint8 *) dpixels + rect->y * dpitch + rect->x * bpp;
length = rect->w * bpp;
for (row = 0; row < rect->h; ++row) {
SDL_memcpy(dst, src, length);
src += pitch;
dst += dpitch;
}
/* copy other planes for 3 plane formats */
if (texture->format == SDL_PIXELFORMAT_YV12 ||
texture->format == SDL_PIXELFORMAT_IYUV) {
src = (Uint8 *) pixels + texture->h * pitch;
dst = (Uint8 *) dpixels + texture->h * dpitch + rect->y * dpitch / 4 + rect->x * bpp / 2;
for (row = 0; row < rect->h / 2; ++row) {
SDL_memcpy(dst, src, length / 2);
src += pitch / 2;
dst += dpitch / 2;
}
src = (Uint8 *) pixels + texture->h * pitch + texture->h * pitch / 4;
dst = (Uint8 *) dpixels + texture->h * dpitch + texture->h * dpitch / 4 + rect->y * dpitch / 4 + rect->x * bpp / 2;
for (row = 0; row < rect->h / 2; ++row) {
SDL_memcpy(dst, src, length / 2);
src += pitch / 2;
dst += dpitch / 2;
}
}
SDL_DFB_CHECKERR(data->surface->Unlock(data->surface));
return 0;
error:
return 1;
}
static int
DirectFB_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch)
{
DirectFB_TextureData *texturedata =
(DirectFB_TextureData *) texture->driverdata;
if (markDirty) {
SDL_AddDirtyRect(&texturedata->dirty, rect);
}
if (texturedata->display) {
void *fdata;
int fpitch;
SDL_DFB_CHECKERR(texturedata->surface->Lock(texturedata->surface,
DSLF_WRITE | DSLF_READ,
&fdata, &fpitch));
*pitch = fpitch;
*pixels = fdata;
} else {
*pixels =
(void *) ((Uint8 *) texturedata->pixels +
rect->y * texturedata->pitch +
rect->x * DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(texture->format)));
*pitch = texturedata->pitch;
}
return 0;
error:
return -1;
}
static void
DirectFB_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
DirectFB_TextureData *texturedata =
(DirectFB_TextureData *) texture->driverdata;
if (texturedata->display) {
SDL_DFB_CHECK(texturedata->surface->Unlock(texturedata->surface));
texturedata->pixels = NULL;
}
}
static void
DirectFB_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
int numrects, const SDL_Rect * rects)
{
DirectFB_TextureData *data = (DirectFB_TextureData *) texture->driverdata;
int i;
for (i = 0; i < numrects; ++i) {
SDL_AddDirtyRect(&data->dirty, &rects[i]);
}
}
static int
PrepareDraw(SDL_Renderer * renderer)
{
DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
SDL_DFB_WINDOWSURFACE(data->window);
Uint8 r, g, b, a;
r = renderer->r;
g = renderer->g;
b = renderer->b;
a = renderer->a;
SetBlendMode(data, renderer->blendMode, NULL);
SDL_DFB_CHECKERR(destsurf->SetDrawingFlags(destsurf, data->drawFlags));
switch (renderer->blendMode) {
case SDL_BLENDMODE_NONE:
case SDL_BLENDMODE_MASK:
case SDL_BLENDMODE_BLEND:
break;
case SDL_BLENDMODE_ADD:
case SDL_BLENDMODE_MOD:
r = ((int) r * (int) a) / 255;
g = ((int) g * (int) a) / 255;
b = ((int) b * (int) a) / 255;
a = 255;
break;
}
SDL_DFB_CHECKERR(destsurf->SetColor(destsurf, r, g, b, a));
return 0;
error:
return -1;
}
static int DirectFB_RenderDrawPoints(SDL_Renderer * renderer,
const SDL_Point * points, int count)
{
DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
SDL_DFB_WINDOWSURFACE(data->window);
int i;
PrepareDraw(renderer);
for (i=0; i < count; i++)
SDL_DFB_CHECKERR(destsurf->DrawLine(destsurf, points[i].x, points[i].y, points[i].x, points[i].y));
return 0;
error:
return -1;
}
static int DirectFB_RenderDrawLines(SDL_Renderer * renderer,
const SDL_Point * points, int count)
{
DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
SDL_DFB_WINDOWSURFACE(data->window);
int i;
PrepareDraw(renderer);
/* Use antialiasing when available */
#if (DFB_VERSION_ATLEAST(1,2,0))
SDL_DFB_CHECKERR(destsurf->SetRenderOptions(destsurf, DSRO_ANTIALIAS));
#endif
for (i=0; i < count - 1; i++)
SDL_DFB_CHECKERR(destsurf->DrawLine(destsurf, points[i].x, points[i].y, points[i+1].x, points[i+1].y));
return 0;
error:
return -1;
}
static int
DirectFB_RenderDrawRects(SDL_Renderer * renderer, const SDL_Rect ** rects, int count)
{
DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
SDL_DFB_WINDOWSURFACE(data->window);
int i;
PrepareDraw(renderer);
for (i=0; i<count; i++)
SDL_DFB_CHECKERR(destsurf->DrawRectangle(destsurf, rects[i]->x, rects[i]->y,
rects[i]->w, rects[i]->h));
return 0;
error:
return -1;
}
static int
DirectFB_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects, int count)
{
DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
SDL_DFB_WINDOWSURFACE(data->window);
int i;
PrepareDraw(renderer);
for (i=0; i<count; i++)
SDL_DFB_CHECKERR(destsurf->FillRectangle(destsurf, rects[i]->x, rects[i]->y,
rects[i]->w, rects[i]->h));
return 0;
error:
return -1;
}
static int
DirectFB_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
{
DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
SDL_DFB_WINDOWSURFACE(data->window);
DirectFB_TextureData *texturedata =
(DirectFB_TextureData *) texture->driverdata;
Uint8 alpha = 0xFF;
if (texturedata->display) {
int px, py;
SDL_Window *window = renderer->window;
SDL_DFB_WINDOWDATA(window);
SDL_VideoDisplay *display = texturedata->display;
DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
SDL_DFB_CHECKERR(dispdata->
vidlayer->SetSourceRectangle(dispdata->vidlayer,
srcrect->x, srcrect->y,
srcrect->w,
srcrect->h));
SDL_DFB_CHECK(windata->window->GetPosition(windata->window, &px, &py));
px += windata->client.x;
py += windata->client.y;
SDL_DFB_CHECKERR(dispdata->
vidlayer->SetScreenRectangle(dispdata->vidlayer,
px + dstrect->x,
py + dstrect->y,
dstrect->w,
dstrect->h));
} else {
DFBRectangle sr, dr;
DFBSurfaceBlittingFlags flags = 0;
if (texturedata->dirty.list) {
SDL_DirtyRect *dirty;
void *pixels;
int bpp = DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(texture->format));
int pitch = texturedata->pitch;
for (dirty = texturedata->dirty.list; dirty; dirty = dirty->next) {
SDL_Rect *rect = &dirty->rect;
pixels =
(void *) ((Uint8 *) texturedata->pixels +
rect->y * pitch + rect->x * bpp);
DirectFB_UpdateTexture(renderer, texture, rect,
texturedata->pixels,
texturedata->pitch);
}
SDL_ClearDirtyRects(&texturedata->dirty);
}
SDLtoDFBRect(srcrect, &sr);
SDLtoDFBRect(dstrect, &dr);