This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_photon_render.c
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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
QNX Photon GUI SDL driver
Copyright (C) 2009 Mike Gorchak
(mike@malva.ua, lestat@i.com.ua)
*/
#include "SDL_config.h"
#include "../SDL_pixels_c.h"
#include "../SDL_yuv_sw_c.h"
#include "SDL_video.h"
#include "SDL_photon_render.h"
#include "SDL_photon.h"
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#ifndef Pg_OSC_MEM_LINEAR_ACCESSIBLE
/* For QNX 6.3.2 compatibility */
#define Pg_OSC_MEM_LINEAR_ACCESSIBLE 0
#endif /* Pg_OSC_MEM_LINEAR_ACCESSIBLE */
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static SDL_Renderer *photon_createrenderer(SDL_Window * window, Uint32 flags);
static int photon_displaymodechanged(SDL_Renderer * renderer);
static int photon_activaterenderer(SDL_Renderer * renderer);
static int photon_createtexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static int photon_querytexturepixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels,
int *pitch);
static int photon_settexturepalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors);
static int photon_gettexturepalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors);
static int photon_updatetexture(SDL_Renderer * renderer,
SDL_Texture * texture, const SDL_Rect * rect,
const void *pixels, int pitch);
static int photon_locktexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch);
static void photon_unlocktexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void photon_dirtytexture(SDL_Renderer * renderer,
SDL_Texture * texture, int numrects,
const SDL_Rect * rects);
static int photon_renderpoint(SDL_Renderer * renderer, int x, int y);
static int photon_renderline(SDL_Renderer * renderer, int x1, int y1, int x2,
int y2);
static int photon_renderfill(SDL_Renderer * renderer, const SDL_Rect * rect);
static int photon_rendercopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_Rect * dstrect);
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static int photon_renderreadpixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, void * pixels, int pitch);
static int photon_renderwritepixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, const void * pixels, int pitch);
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static void photon_renderpresent(SDL_Renderer * renderer);
static void photon_destroytexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void photon_destroyrenderer(SDL_Renderer * renderer);
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static int _photon_recreate_surfaces(SDL_Renderer * renderer);
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SDL_RenderDriver photon_renderdriver = {
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photon_createrenderer,
{
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"photon",
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_PRESENTDISCARD |
SDL_RENDERER_ACCELERATED),
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10,
{SDL_PIXELFORMAT_INDEX8,
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SDL_PIXELFORMAT_RGB555,
SDL_PIXELFORMAT_RGB565,
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SDL_PIXELFORMAT_RGB24,
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SDL_PIXELFORMAT_RGB888,
SDL_PIXELFORMAT_ARGB8888,
SDL_PIXELFORMAT_YV12,
SDL_PIXELFORMAT_YUY2,
SDL_PIXELFORMAT_UYVY,
SDL_PIXELFORMAT_YVYU},
0,
0}
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static SDL_Renderer *
photon_createrenderer(SDL_Window * window, Uint32 flags)
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SDL_VideoDisplay *display = window->display;
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SDL_DisplayData *didata = (SDL_DisplayData *) display->driverdata;
SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer = NULL;
SDL_RenderData *rdata = NULL;
/* Allocate new renderer structure */
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(SDL_Renderer));
if (renderer == NULL) {
SDL_OutOfMemory();
return NULL;
}
/* Allocate renderer data */
rdata = (SDL_RenderData *) SDL_calloc(1, sizeof(SDL_RenderData));
if (rdata == NULL) {
SDL_free(renderer);
SDL_OutOfMemory();
return NULL;
}
renderer->DisplayModeChanged = photon_displaymodechanged;
renderer->ActivateRenderer = photon_activaterenderer;
renderer->CreateTexture = photon_createtexture;
renderer->QueryTexturePixels = photon_querytexturepixels;
renderer->SetTexturePalette = photon_settexturepalette;
renderer->GetTexturePalette = photon_gettexturepalette;
renderer->UpdateTexture = photon_updatetexture;
renderer->LockTexture = photon_locktexture;
renderer->UnlockTexture = photon_unlocktexture;
renderer->DirtyTexture = photon_dirtytexture;
renderer->RenderPoint = photon_renderpoint;
renderer->RenderLine = photon_renderline;
renderer->RenderFill = photon_renderfill;
renderer->RenderCopy = photon_rendercopy;
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renderer->RenderReadPixels = photon_renderreadpixels;
renderer->RenderWritePixels = photon_renderwritepixels;
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renderer->RenderPresent = photon_renderpresent;
renderer->DestroyTexture = photon_destroytexture;
renderer->DestroyRenderer = photon_destroyrenderer;
renderer->info = photon_renderdriver.info;
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renderer->window = window;
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renderer->driverdata = rdata;
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/* Copy direct_mode status */
rdata->direct_mode=didata->direct_mode;
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/* Set render acceleration flag in case it is accelerated */
if ((didata->caps & SDL_PHOTON_ACCELERATED) == SDL_PHOTON_ACCELERATED) {
renderer->info.flags = SDL_RENDERER_ACCELERATED;
} else {
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renderer->info.flags = 0;
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}
/* Check if upper level requested synchronization on vsync signal */
if ((flags & SDL_RENDERER_PRESENTVSYNC) == SDL_RENDERER_PRESENTVSYNC) {
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if (rdata->direct_mode==SDL_TRUE)
{
/* We can control vsync only in direct mode */
rdata->enable_vsync = SDL_TRUE;
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
}
else
{
rdata->enable_vsync = SDL_FALSE;
}
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} else {
rdata->enable_vsync = SDL_FALSE;
}
/* Check what buffer copy/flip scheme is requested */
rdata->surfaces_count = 0;
if ((flags & SDL_RENDERER_SINGLEBUFFER) == SDL_RENDERER_SINGLEBUFFER) {
if ((flags & SDL_RENDERER_PRESENTDISCARD) ==
SDL_RENDERER_PRESENTDISCARD) {
renderer->info.flags |=
SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTDISCARD;
} else {
renderer->info.flags |=
SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY;
}
rdata->surfaces_count = 1;
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 0;
} else {
if ((flags & SDL_RENDERER_PRESENTFLIP2) == SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
rdata->surfaces_count = 2;
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 1;
} else {
if ((flags & SDL_RENDERER_PRESENTFLIP3) ==
SDL_RENDERER_PRESENTFLIP3) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
rdata->surfaces_count = 3;
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 1;
} else {
renderer->info.flags |=
SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY;
rdata->surfaces_count = 1;
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 0;
}
}
}
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/* Create new graphics context for the renderer */
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if (rdata->gc==NULL)
{
rdata->gc=PgCreateGC(0);
PgDefaultGC(rdata->gc);
}
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/* Setup textures supported by current renderer instance */
renderer->info.num_texture_formats=1;
renderer->info.texture_formats[0]=didata->current_mode.format;
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/* Initialize surfaces */
_photon_recreate_surfaces(renderer);
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return renderer;
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void
photon_addrenderdriver(_THIS)
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uint32_t it;
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for (it = 0; it < _this->num_displays; it++) {
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SDL_AddRenderDriver(&_this->displays[it], &photon_renderdriver);
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}
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}
/****************************************************************************/
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/* Renderer helper functions */
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/****************************************************************************/
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static int _photon_recreate_surfaces(SDL_Renderer * renderer)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
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SDL_VideoDisplay *display = NULL;
SDL_DisplayData *didata = NULL;
SDL_Window *window = NULL;
SDL_WindowData *wdata = NULL;
SDL_VideoData *phdata = NULL;
uint32_t allocate_task=SDL_PHOTON_SURFTYPE_UNKNOWN;
int32_t status;
/* Obtain window and display structures */
window=SDL_GetWindowFromID(renderer->window);
wdata=(SDL_WindowData*)window->driverdata;
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display=window->display;
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didata=(SDL_DisplayData *) display->driverdata;
phdata=(SDL_VideoData *) display->device->driverdata;
/* Check if it is OpenGL ES window */
if ((window->flags & SDL_WINDOW_OPENGL) == SDL_WINDOW_OPENGL) {
/* If so, do not waste surfaces */
rdata->surfaces_type=SDL_PHOTON_SURFTYPE_UNKNOWN;
return 0;
}
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
/* Try to allocate offscreen surfaces */
allocate_task=SDL_PHOTON_SURFTYPE_OFFSCREEN;
}
else
{
uint32_t it;
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_OFFSCREEN)
{
/* Create offscreen surfaces */
allocate_task=SDL_PHOTON_SURFTYPE_OFFSCREEN;
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/* Before destroying surfaces, be sure, that rendering was completed */
PgFlush();
PgWaitHWIdle();
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/* Destroy current surfaces */
for (it=0; it<SDL_PHOTON_MAX_SURFACES; it++)
{
if (rdata->osurfaces[it] != NULL)
{
PhDCRelease(rdata->osurfaces[it]);
rdata->osurfaces[it] = NULL;
}
}
}
else
{
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_PHIMAGE)
{
/* Create shared phimage surfaces */
allocate_task=SDL_PHOTON_SURFTYPE_PHIMAGE;
/* Destroy current surfaces */
for (it=0; it<SDL_PHOTON_MAX_SURFACES; it++)
{
if (rdata->pcontexts[it]!=NULL)
{
PmMemReleaseMC(rdata->pcontexts[it]);
rdata->pcontexts[it]=NULL;
}
if (rdata->psurfaces[it]!=NULL)
{
if (rdata->psurfaces[it]->palette!=NULL)
{
SDL_free(rdata->psurfaces[it]->palette);
rdata->psurfaces[it]->palette=NULL;
}
/* Destroy shared memory for PhImage_t */
PgShmemDestroy(rdata->psurfaces[it]->image);
rdata->psurfaces[it]->image=NULL;
SDL_free(rdata->psurfaces[it]);
rdata->psurfaces[it]=NULL;
}
}
}
}
}
/* Check if current device is not the same as target */
if (phdata->current_device_id != didata->device_id) {
/* Set target device as default for Pd and Pg functions */
status = PdSetTargetDevice(NULL, phdata->rid[didata->device_id]);
if (status != 0) {
SDL_SetError("Photon: Can't set default target device\n");
return -1;
}
phdata->current_device_id = didata->device_id;
}
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switch (allocate_task)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
{
int32_t it;
int32_t jt;
/* Try the hardware accelerated offscreen surfaces first */
for (it=0; it<rdata->surfaces_count; it++)
{
rdata->osurfaces[it]=PdCreateOffscreenContext(0, window->w, window->h,
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Pg_OSC_MEM_LINEAR_ACCESSIBLE | Pg_OSC_MEM_PAGE_ALIGN |
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/* in case if 2D acceleration is available use it */
Pg_OSC_MEM_2D_WRITABLE | Pg_OSC_MEM_2D_READABLE);
/* If we can't create an offscreen surface, then fallback to software */
if (rdata->osurfaces[it]==NULL)
{
/* Destroy previously allocated surface(s) */
for (jt = it - 1; jt > 0; jt--)
{
PhDCRelease(rdata->osurfaces[jt]);
rdata->osurfaces[jt] = NULL;
}
break;
}
}
/* Check if all required surfaces have been created */
if (rdata->osurfaces[0]!=NULL)
{
rdata->surfaces_type=SDL_PHOTON_SURFTYPE_OFFSCREEN;
/* exit from switch if surfaces have been created */
break;
}
else
{
/* else fall through to software phimage surface allocation */
}
}
/* fall through */
case SDL_PHOTON_SURFTYPE_PHIMAGE:
{
int32_t it;
int32_t jt;
uint32_t image_pfmt=photon_sdl_to_image_pixelformat(didata->current_mode.format);
/* Try to allocate the software surfaces in shared memory */
for (it=0; it<rdata->surfaces_count; it++)
{
/* If this surface with palette, create a palette space */
if (image_pfmt==Pg_IMAGE_PALETTE_BYTE)
{
rdata->psurfaces[it]=PhCreateImage(NULL, window->w, window->h,
image_pfmt, NULL, 256, 1);
}
else
{
rdata->psurfaces[it]=PhCreateImage(NULL, window->w, window->h,
image_pfmt, NULL, 0, 1);
}
if (rdata->psurfaces[it]!=NULL)
{
PhPoint_t translation={0, 0};
PhDim_t dimension={window->w, window->h};
/* Create memory context for PhImage_t */
rdata->pcontexts[it]=PmMemCreateMC(rdata->psurfaces[it], &dimension, &translation);
}
if ((rdata->psurfaces[it]==NULL) || (rdata->pcontexts[it]==NULL))
{
/* Destroy previously allocated surface(s) */
for (jt = it - 1; jt > 0; jt--)
{
if (rdata->pcontexts[jt]!=NULL)
{
PmMemReleaseMC(rdata->pcontexts[it]);
rdata->pcontexts[jt]=NULL;
}
if (rdata->psurfaces[jt]!=NULL)
{
if (rdata->psurfaces[jt]->palette!=NULL)
{
SDL_free(rdata->psurfaces[jt]->palette);
rdata->psurfaces[jt]->palette=NULL;
}
/* Destroy shared memory for PhImage_t */
PgShmemDestroy(rdata->psurfaces[jt]->image);
rdata->psurfaces[jt]->image=NULL;
SDL_free(rdata->psurfaces[jt]);
rdata->psurfaces[jt] = NULL;
}
}
break;
}
}
/* Check if all required surfaces have been created */
if (rdata->psurfaces[0]!=NULL)
{
rdata->surfaces_type=SDL_PHOTON_SURFTYPE_PHIMAGE;
}
else
{
rdata->surfaces_type=SDL_PHOTON_SURFTYPE_UNKNOWN;
}
}
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
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default:
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{
/* do nothing with surface allocation */
rdata->surfaces_type=SDL_PHOTON_SURFTYPE_UNKNOWN;
}
break;
}
/* Check if one of two allocation scheme was successful */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: primary surface(s) allocation failure");
return -1;
}
/* Store current surface dimensions */
rdata->window_width=window->w;
rdata->window_height=window->h;
/* If current copy/flip scheme is single buffer, then set initial parameters */
if ((renderer->info.flags & SDL_RENDERER_SINGLEBUFFER)==SDL_RENDERER_SINGLEBUFFER)
{
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 0;
}
/* If current copy/flip scheme is double buffer, then set initial parameters */
if ((renderer->info.flags & SDL_RENDERER_PRESENTFLIP2)==SDL_RENDERER_PRESENTFLIP2)
{
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 1;
}
/* If current copy/flip scheme is triple buffer, then set initial parameters */
if ((renderer->info.flags & SDL_RENDERER_PRESENTFLIP3)==SDL_RENDERER_PRESENTFLIP3)
{
rdata->surface_visible_idx = 0;
rdata->surface_render_idx = 1;
}
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switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
PgSetGCCx(rdata->osurfaces[rdata->surface_render_idx], rdata->gc);
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
PgSetGCCx(rdata->pcontexts[rdata->surface_render_idx], rdata->gc);
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
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default:
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break;
}
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return 0;
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int _photon_update_rectangles(SDL_Renderer* renderer, PhRect_t* rect)
{
SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_Window *window = window=SDL_GetWindowFromID(renderer->window);
SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
PhPoint_t src_point;
/* If currently single buffer is in use, we have to flush all data */
if (rdata->surface_render_idx==rdata->surface_visible_idx)
{
/* Flush all undrawn graphics data to surface */
switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
PgFlushCx(rdata->osurfaces[rdata->surface_visible_idx]);
PgWaitHWIdle();
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
PmMemFlush(rdata->pcontexts[rdata->surface_visible_idx], rdata->psurfaces[rdata->surface_visible_idx]);
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
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default:
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return;
}
}
PgSetRegionCx(PhDCGetCurrent(), PtWidgetRid(wdata->window));
src_point.x = rect->ul.x;
src_point.y = rect->ul.y;
switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
PgContextBlit(rdata->osurfaces[rdata->surface_visible_idx], rect, NULL, rect);
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
PgDrawPhImageRectv(&src_point, rdata->psurfaces[rdata->surface_visible_idx], rect, 0);
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
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default:
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break;
}
}
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int _photon_set_blending(SDL_Renderer* renderer, uint32_t blendmode, uint32_t globalalpha, uint32_t blendsource)
{
SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
/* Switch on requested graphics context modifiers */
switch (blendmode)
{
case SDL_BLENDMODE_BLEND:
/* Enable and set chroma key and alpha blending */
if (blendsource==SDL_PHOTON_TEXTURE_BLEND)
{
PgSetChromaCx(rdata->gc, PgRGB(255, 255, 255), Pg_CHROMA_SRC_MATCH | Pg_CHROMA_NODRAW);
PgChromaOnCx(rdata->gc);
}
PgSetAlphaCx(rdata->gc, Pg_ALPHA_OP_SRC_GLOBAL | Pg_BLEND_SRC_As | Pg_BLEND_DST_1mAs, NULL, NULL, globalalpha, 0);
PgAlphaOnCx(rdata->gc);
break;
case SDL_BLENDMODE_ADD:
/* Enable and set chroma key and alpha blending */
if (blendsource==SDL_PHOTON_TEXTURE_BLEND)
{
PgSetChromaCx(rdata->gc, PgRGB(255, 255, 255), Pg_CHROMA_SRC_MATCH | Pg_CHROMA_NODRAW);
PgChromaOnCx(rdata->gc);
}
PgSetAlphaCx(rdata->gc, Pg_ALPHA_OP_SRC_GLOBAL | Pg_BLEND_SRC_As | Pg_BLEND_DST_1, NULL, NULL, globalalpha, 0);
PgAlphaOnCx(rdata->gc);
break;
case SDL_BLENDMODE_NONE:
/* Do nothing */
break;
default:
return -1;
}
return 0;
}
int _photon_reset_blending(SDL_Renderer* renderer, uint32_t blendmode, uint32_t blendsource)
{
SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
/* Switch off graphics context modifiers */
switch (blendmode)
{
case SDL_BLENDMODE_BLEND:
/* Disable chroma key and alpha blending */
if (blendsource==SDL_PHOTON_TEXTURE_BLEND)
{
PgChromaOffCx(rdata->gc);
}
PgAlphaOffCx(rdata->gc);
break;
case SDL_BLENDMODE_ADD:
/* Disable chroma key and alpha blending */
if (blendsource==SDL_PHOTON_TEXTURE_BLEND)
{
PgChromaOffCx(rdata->gc);
}
PgAlphaOffCx(rdata->gc);
break;
case SDL_BLENDMODE_NONE:
/* Do nothing */
break;
default:
return -1;
}
return 0;
}
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/****************************************************************************/
/* SDL render interface */
/****************************************************************************/
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static int
photon_activaterenderer(SDL_Renderer * renderer)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_WindowData *wdata = (SDL_WindowData *)window->driverdata;
if ((rdata->window_width!=window->w) || (rdata->window_height!=window->h))
{
return _photon_recreate_surfaces(renderer);
}
switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
PgSetGCCx(rdata->osurfaces[rdata->surface_render_idx], rdata->gc);
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
PgSetGCCx(rdata->pcontexts[rdata->surface_render_idx], rdata->gc);
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
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default:
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break;
}
return 0;
}
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static int
photon_displaymodechanged(SDL_Renderer * renderer)
{
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
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SDL_VideoDisplay *display = window->display;
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SDL_DisplayData *didata = (SDL_DisplayData *) display->driverdata;
/* Copy direct_mode status */
rdata->direct_mode=didata->direct_mode;
/* Update the surfaces */
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return _photon_recreate_surfaces(renderer);
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static int
photon_createtexture(SDL_Renderer * renderer, SDL_Texture * texture)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
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SDL_Window *window = SDL_GetWindowFromID(renderer->window);
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SDL_VideoDisplay *display = window->display;
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SDL_DisplayData *didata = (SDL_DisplayData *) display->driverdata;
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SDL_TextureData *tdata = NULL;
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uint32_t it;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't create texture for OpenGL ES window");
return -1;
}
/* Check if requested texture format is supported */
for (it=0; it<renderer->info.num_texture_formats; it++)
{
if (renderer->info.texture_formats[it]==texture->format)
{
break;
}
}
if (it==renderer->info.num_texture_formats)
{
SDL_SetError("Photon: requested texture format is not supported");
return -1;
}
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/* Allocate texture driver data */
tdata = (SDL_TextureData *) SDL_calloc(1, sizeof(SDL_TextureData));
if (tdata == NULL) {
SDL_OutOfMemory();
return -1;
}
/* Set texture driver data */
texture->driverdata = tdata;
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/* Try offscreen allocation only in case if displayable buffers are also offscreen */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_OFFSCREEN)
{
/* Try to allocate offscreen memory first */
tdata->osurface=PdCreateOffscreenContext(0, texture->w, texture->h,
Pg_OSC_MEM_LINEAR_ACCESSIBLE | Pg_OSC_MEM_PAGE_ALIGN |
/* in case if 2D acceleration is available use it */
Pg_OSC_MEM_2D_WRITABLE | Pg_OSC_MEM_2D_READABLE);
}
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/* Check if offscreen allocation has been failed or not performed */
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if (tdata->osurface==NULL)
{
PhPoint_t translation={0, 0};
PhDim_t dimension={texture->w, texture->h};
uint32_t image_pfmt=photon_sdl_to_image_pixelformat(didata->current_mode.format);
/* Allocate photon image */
if (image_pfmt==Pg_IMAGE_PALETTE_BYTE)
{
tdata->psurface=PhCreateImage(NULL, texture->w, texture->h,
image_pfmt, NULL, 256, 1);
}
else
{
tdata->psurface=PhCreateImage(NULL, texture->w, texture->h,
image_pfmt, NULL, 0, 1);
}
if (tdata->psurface==NULL)
{
return -1;
}
/* Create memory context for PhImage_t */
tdata->pcontext=PmMemCreateMC(tdata->psurface, &dimension, &translation);
if (tdata->pcontext==NULL)
{
/* Destroy PhImage */
if (tdata->psurface!=NULL)
{
if (tdata->psurface->palette!=NULL)
{
SDL_free(tdata->psurface->palette);
tdata->psurface->palette=NULL;
}
/* Destroy shared memory for PhImage_t */
PgShmemDestroy(tdata->psurface->image);
tdata->psurface->image=NULL;
SDL_free(tdata->psurface);
tdata->psurface=NULL;
}
}
tdata->surface_type=SDL_PHOTON_SURFTYPE_PHIMAGE;
}
else
{
tdata->surface_type=SDL_PHOTON_SURFTYPE_OFFSCREEN;
}
return 0;
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static int
photon_querytexturepixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_TextureData* tdata=(SDL_TextureData*)texture->driverdata;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't query texture pixels for OpenGL ES window");
return -1;
}
/* Clear outcoming parameters */
*pixels=NULL;
*pitch=0;
switch (tdata->surface_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
*pixels=(void*)PdGetOffscreenContextPtr(tdata->osurface);
*pitch=tdata->osurface->pitch;
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
*pixels=(void*)tdata->psurface->image;
*pitch=tdata->psurface->bpl;
break;
default:
break;
}
return 0;
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static int
photon_settexturepalette(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_TextureData* tdata=(SDL_TextureData*)texture->driverdata;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't set texture palette for OpenGL ES window");
return -1;
}
if (texture->format!=SDL_PIXELFORMAT_INDEX8)
{
SDL_SetError("Photon: can't set palette for non-paletted texture");
return -1;
}
835
SDL_Unsupported();
836
return -1;
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static int
photon_gettexturepalette(SDL_Renderer * renderer, SDL_Texture * texture,
SDL_Color * colors, int firstcolor, int ncolors)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_TextureData* tdata=(SDL_TextureData*)texture->driverdata;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't return texture palette for OpenGL ES window");
return -1;
}
if (texture->format!=SDL_PIXELFORMAT_INDEX8)
{
SDL_SetError("Photon: can't return palette for non-paletted texture");
return -1;
}
859
SDL_Unsupported();
860
return -1;
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static int
photon_updatetexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_TextureData* tdata=(SDL_TextureData*)texture->driverdata;
uint8_t* src=(uint8_t*)pixels;
uint8_t* dst;
uint32_t dst_pitch;
uint32_t it;
uint32_t copy_length;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't update texture for OpenGL ES window");
return -1;
}
switch (tdata->surface_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
dst=(uint8_t*)PdGetOffscreenContextPtr(tdata->osurface);
dst_pitch=tdata->osurface->pitch;
if (dst==NULL)
{
SDL_SetError("Photon: can't get pointer to texture surface");
return -1;
}
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
dst=(uint8_t*)tdata->psurface->image;
dst_pitch=tdata->psurface->bpl;
if (dst==NULL)
{
SDL_SetError("Photon: can't get pointer to texture surface");
return -1;
}
break;
default:
SDL_SetError("Photon: invalid internal surface type");
return -1;
}
dst+=rect->y * dst_pitch + rect->x * SDL_BYTESPERPIXEL(texture->format);
copy_length=rect->w * SDL_BYTESPERPIXEL(texture->format);
for (it = 0; it < rect->h; it++)
{
SDL_memcpy(dst, src, copy_length);
src+=pitch;
dst+=dst_pitch;
}
return 0;
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923
static int
photon_locktexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
SDL_TextureData* tdata=(SDL_TextureData*)texture->driverdata;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't lock texture for OpenGL ES window");
return -1;
}
/* Clear outcoming parameters */
*pixels=NULL;
*pitch=0;
switch (tdata->surface_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
*pixels=(void*)((uint8_t*)PdGetOffscreenContextPtr(tdata->osurface) +
rect->y * tdata->osurface->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch=tdata->osurface->pitch;
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
*pixels=(void*)((uint8_t*)tdata->psurface->image +
rect->y * tdata->osurface->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch=tdata->psurface->bpl;
break;
default:
break;
}
return 0;
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static void
photon_unlocktexture(SDL_Renderer * renderer, SDL_Texture * texture)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't unlock texture for OpenGL ES window");
return;
}
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975
static void
photon_dirtytexture(SDL_Renderer * renderer, SDL_Texture * texture,
int numrects, const SDL_Rect * rects)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
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/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't update dirty texture for OpenGL ES window");
return;
}
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static int
photon_renderpoint(SDL_Renderer * renderer, int x, int y)
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SDL_RenderData *rdata = (SDL_RenderData *) renderer->driverdata;
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/* Check, if it is not initialized */
if (rdata->surfaces_type==SDL_PHOTON_SURFTYPE_UNKNOWN)
{
SDL_SetError("Photon: can't render point in OpenGL ES window");
return -1;
}
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/* Enable blending, if requested */
_photon_set_blending(renderer, renderer->blendMode, renderer->a, SDL_PHOTON_DRAW_BLEND);