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RenderReadPixels and RenderWritePixels functions work with back buffe…
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…r now and all asynchronous operations are flushed before reading or writing to backbuffer. Thanks Sam for clarification of this.
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@llmike
llmike committed Nov 21, 2009
1 parent a79e2e3 commit 9aa1024
Showing 1 changed file with 42 additions and 12 deletions.
54 changes: 42 additions & 12 deletions src/video/photon/SDL_photon_render.c
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Expand Up @@ -1594,17 +1594,32 @@ photon_renderreadpixels(SDL_Renderer * renderer, const SDL_Rect * rect,
uint8_t* spixels=NULL;
unsigned int spitch=0;

/* Flush all undrawn graphics data to surface */
switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
sformat=photon_image_to_sdl_pixelformat(rdata->osurfaces[rdata->surface_visible_idx]->format);
spixels=(uint8_t*)PdGetOffscreenContextPtr(rdata->osurfaces[rdata->surface_visible_idx]);
spitch=rdata->osurfaces[rdata->surface_visible_idx]->pitch;
PgFlushCx(rdata->osurfaces[rdata->surface_render_idx]);
PgWaitHWIdle();
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
sformat=photon_image_to_sdl_pixelformat(rdata->psurfaces[rdata->surface_visible_idx]->type);
spixels=(uint8_t*)rdata->psurfaces[rdata->surface_visible_idx]->image;
spitch=rdata->psurfaces[rdata->surface_visible_idx]->bpl;
PmMemFlush(rdata->pcontexts[rdata->surface_render_idx], rdata->psurfaces[rdata->surface_render_idx]);
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
default:
return;
}

switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
sformat=photon_image_to_sdl_pixelformat(rdata->osurfaces[rdata->surface_render_idx]->format);
spixels=(uint8_t*)PdGetOffscreenContextPtr(rdata->osurfaces[rdata->surface_render_idx]);
spitch=rdata->osurfaces[rdata->surface_render_idx]->pitch;
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
sformat=photon_image_to_sdl_pixelformat(rdata->psurfaces[rdata->surface_render_idx]->type);
spixels=(uint8_t*)rdata->psurfaces[rdata->surface_render_idx]->image;
spitch=rdata->psurfaces[rdata->surface_render_idx]->bpl;
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
default:
Expand All @@ -1631,17 +1646,32 @@ photon_renderwritepixels(SDL_Renderer * renderer, const SDL_Rect * rect,
uint8_t* spixels=NULL;
unsigned int spitch=0;

/* Flush all undrawn graphics data to surface */
switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
PgFlushCx(rdata->osurfaces[rdata->surface_render_idx]);
PgWaitHWIdle();
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
PmMemFlush(rdata->pcontexts[rdata->surface_render_idx], rdata->psurfaces[rdata->surface_render_idx]);
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
default:
return;
}

switch (rdata->surfaces_type)
{
case SDL_PHOTON_SURFTYPE_OFFSCREEN:
sformat=photon_image_to_sdl_pixelformat(rdata->osurfaces[rdata->surface_visible_idx]->format);
spixels=(uint8_t*)PdGetOffscreenContextPtr(rdata->osurfaces[rdata->surface_visible_idx]);
spitch=rdata->osurfaces[rdata->surface_visible_idx]->pitch;
sformat=photon_image_to_sdl_pixelformat(rdata->osurfaces[rdata->surface_render_idx]->format);
spixels=(uint8_t*)PdGetOffscreenContextPtr(rdata->osurfaces[rdata->surface_render_idx]);
spitch=rdata->osurfaces[rdata->surface_render_idx]->pitch;
break;
case SDL_PHOTON_SURFTYPE_PHIMAGE:
sformat=photon_image_to_sdl_pixelformat(rdata->psurfaces[rdata->surface_visible_idx]->type);
spixels=(uint8_t*)rdata->psurfaces[rdata->surface_visible_idx]->image;
spitch=rdata->psurfaces[rdata->surface_visible_idx]->bpl;
sformat=photon_image_to_sdl_pixelformat(rdata->psurfaces[rdata->surface_render_idx]->type);
spixels=(uint8_t*)rdata->psurfaces[rdata->surface_render_idx]->image;
spitch=rdata->psurfaces[rdata->surface_render_idx]->bpl;
break;
case SDL_PHOTON_SURFTYPE_UNKNOWN:
default:
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