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[client] treat buffers correctly

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This commit is contained in:
Geoffrey McRae 2017-12-14 10:06:22 +11:00
parent 2374b1a9fb
commit 9d29b1195d
3 changed files with 41 additions and 37 deletions
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3
client/lg-renderer.h
View File

@ -39,6 +39,7 @@ typedef struct LG_RendererParams
SDL_Window * window;
TTF_Font * font;
bool showFPS;
bool resample;
int width;
int height;
}
@ -78,7 +79,7 @@ typedef bool (* LG_RendererIsCompatible )(void * opaque, const LG_Rende
typedef void (* LG_RendererOnResize )(void * opaque, const int width, const int height, const LG_RendererRect destRect);
typedef bool (* LG_RendererOnMouseShape )(void * opaque, const LG_RendererCursor cursor, const int width, const int height, const int pitch, const uint8_t * data);
typedef bool (* LG_RendererOnMouseEvent )(void * opaque, const bool visible , const int x, const int y);
typedef bool (* LG_RendererOnFrameEvent )(void * opaque, const uint8_t * data, bool resample);
typedef bool (* LG_RendererOnFrameEvent )(void * opaque, const uint8_t * data);
typedef bool (* LG_RendererRender )(void * opaque);
typedef struct LG_Renderer

3
client/main.c
View File

@ -237,6 +237,7 @@ int renderThread(void * unused)
LG_RendererParams lgrParams;
lgrParams.window = state.window;
lgrParams.font = state.font;
lgrParams.resample = params.useMipmap;
lgrParams.showFPS = params.showFPS;
lgrParams.width = width;
lgrParams.height = height;
@ -298,7 +299,7 @@ int renderThread(void * unused)
}
const uint8_t * data = (const uint8_t *)state.shm + header.frame.dataPos;
if (!state.lgr->on_frame_event(state.lgrData, data, params.useMipmap))
if (!state.lgr->on_frame_event(state.lgrData, data))
{
DEBUG_ERROR("Failed to render the frame");
break;

62
client/renderers/opengl.c
View File

@ -124,7 +124,8 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
}
}
SDL_GL_SetSwapInterval(1);
SDL_GL_SetSwapInterval(0);
glDrawBuffer(GL_FRONT);
// check if the GPU supports GL_ARB_buffer_storage first
// there is no advantage to this renderer if it is not present.
@ -176,8 +177,7 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
this->texSize * BUFFER_COUNT,
NULL,
GL_MAP_WRITE_BIT |
GL_MAP_PERSISTENT_BIT |
GL_MAP_COHERENT_BIT
GL_MAP_PERSISTENT_BIT
);
if (lgr_opengl_check_error("glBufferStorage"))
return false;
@ -188,7 +188,7 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
this->texSize * BUFFER_COUNT,
GL_MAP_WRITE_BIT |
GL_MAP_PERSISTENT_BIT |
GL_MAP_COHERENT_BIT
GL_MAP_FLUSH_EXPLICIT_BIT
);
if (lgr_opengl_check_error("glMapBufferRange"))
@ -446,16 +446,12 @@ bool lgr_opengl_on_mouse_event(void * opaque, const bool visible, const int x, c
return false;
}
bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resample)
bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data)
{
struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
if (!this || !this->initialized)
return false;
int texIndex = this->texIndex + 1;
if (texIndex == BUFFER_COUNT)
texIndex = 0;
if (this->params.showFPS && this->renderTime > 1e9)
{
char str[128];
@ -526,33 +522,38 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
glEndList();
}
// copy the buffer to the texture
memcpySSE(this->texPixels[texIndex], data, this->texSize);
// bind the texture and update it
glBindTexture(GL_TEXTURE_2D , this->textures[FRAME_TEXTURE]);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, this->vboID[0] );
glPixelStorei(GL_UNPACK_ALIGNMENT , 4 );
glPixelStorei(GL_UNPACK_ROW_LENGTH , this->format.width );
// copy the buffer to the texture
memcpySSE(this->texPixels[this->texIndex], data, this->texSize);
glFlushMappedBufferRange(
GL_PIXEL_UNPACK_BUFFER,
this->texSize * this->texIndex,
this->texSize
);
// update the texture
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
texIndex * this->format.height,
this->texIndex * this->format.height,
this->format.width ,
this->format.height,
this->vboFormat,
GL_UNSIGNED_BYTE,
(void*)(texIndex * this->texSize)
(void*)(this->texIndex * this->texSize)
);
lgr_opengl_check_error("glTexSubImage2D");
// unbind the buffer
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
const bool mipmap = resample && (
const bool mipmap = this->params.resample && (
(this->format.width > this->destRect.w) ||
(this->format.height > this->destRect.h));
@ -568,8 +569,10 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
glBindTexture(GL_TEXTURE_2D, 0);
if (++this->texIndex == BUFFER_COUNT)
this->texIndex = 0;
this->frameUpdate = true;
this->texIndex = texIndex;
return true;
}
@ -616,9 +619,6 @@ bool lgr_opengl_render(void * opaque)
);
this->resizeWindow = false;
glDisable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_SCISSOR_TEST);
}
@ -631,23 +631,25 @@ bool lgr_opengl_render(void * opaque)
const uint64_t delta = nanotime() - this->lastMouseDraw;
if (delta < 1e7)
return true;
glDrawBuffer(GL_FRONT);
glCallList(this->texList + this->texIndex);
lgr_opengl_draw_mouse(this);
glFlush();
this->mouseUpdate = false;
this->lastMouseDraw = nanotime();
return true;
}
glDrawBuffer(GL_BACK);
// wait for vsync
unsigned int count;
glXGetVideoSyncSGI(&count);
if (count == this->gpuFrameCount)
glXWaitVideoSyncSGI(1, 0, &count);
glXGetVideoSyncSGI(&this->gpuFrameCount);
glDisable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_SCISSOR_TEST);
glCallList(this->texList + this->texIndex);
lgr_opengl_draw_mouse(this);
if (this->fpsTexture)
glCallList(this->fpsList);
SDL_GL_SwapWindow(this->params.window);
glFlush();
++this->frameCount;
const uint64_t t = nanotime();