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[client] added support for double buffering

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This commit is contained in:
Geoffrey McRae 2017-11-15 18:13:55 +11:00
parent 16a8acb303
commit b6857d94f1
1 changed files with 6 additions and 28 deletions
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34
client/main.c
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@ -93,35 +93,20 @@ void drawFunc_ARGB10(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, co
{
SDL_UpdateTexture(texture, NULL, src, state.shm->stride * 4);
ivshmem_kick_irq(state.shm->guestID, 0);
SDL_RenderClear(state.renderer);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
}
void drawFunc_ARGB(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
{
compFunc(dst, src, state.shm->height * state.shm->stride * 4);
ivshmem_kick_irq(state.shm->guestID, 0);
SDL_UnlockTexture(texture);
SDL_RenderClear(state.renderer);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
}
void drawFunc_RGB(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
{
compFunc(dst, src, state.shm->height * state.shm->stride * 3);
ivshmem_kick_irq(state.shm->guestID, 0);
SDL_UnlockTexture(texture);
SDL_RenderClear(state.renderer);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
}
void drawFunc_XOR(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
@ -131,10 +116,7 @@ void drawFunc_XOR(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const
compFunc(dst, src, state.shm->height * state.shm->stride * 3);
ivshmem_kick_irq(state.shm->guestID, 0);
SDL_UnlockTexture(texture);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
// clear the buffer for the next frame
memset(dst, 0, state.shm->height * state.shm->stride * 3);
@ -144,10 +126,7 @@ void drawFunc_YUV444P(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, c
{
compFunc(dst, src, state.shm->height * state.shm->stride * 3);
ivshmem_kick_irq(state.shm->guestID, 0);
SDL_UnlockTexture(texture);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
}
void drawFunc_YUV420P(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
@ -159,19 +138,14 @@ void drawFunc_YUV420P(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, c
src + pixels , state.shm->stride / 2,
src + pixels + pixels / 4, state.shm->stride / 2
);
ivshmem_kick_irq(state.shm->guestID, 0);
SDL_RenderClear(state.renderer);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
}
int renderThread(void * unused)
{
struct KVMGFXHeader format;
SDL_Texture *texture = NULL;
uint8_t *pixels = (uint8_t*)(state.shm + 1);
uint8_t *pixels = (uint8_t*)state.shm;
uint8_t *texPixels = NULL;
DrawFunc drawFunc = NULL;
CompFunc compFunc = NULL;
@ -203,6 +177,7 @@ int renderThread(void * unused)
break;
case IVSHMEM_WAIT_RESULT_TIMEOUT:
DEBUG_INFO("timed out");
ivshmem_kick_irq(state.shm->guestID, 0);
ready = false;
break;
@ -266,7 +241,10 @@ int renderThread(void * unused)
}
glDisable(GL_COLOR_LOGIC_OP);
drawFunc(compFunc, texture, texPixels, pixels);
drawFunc(compFunc, texture, texPixels, pixels + state.shm->dataPos);
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
SDL_RenderPresent(state.renderer);
state.started = true;
}