void GLTransferBuffers::waitMarker(unsigned int uiMarkerValue)
{
if (m_bUseP2P)
{
glWaitMarkerAMD(m_pBuffer[m_uiBufferIdx], uiMarkerValue);
}
}
void GLSink::draw()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Update stream
glBindTexture(GL_TEXTURE_2D, m_uiTexture);
FrameData* pFrame = NULL;
// block until new frame is available
m_uiBufferIdx = m_pInputBuffer->getBufferForReading((void*&)pFrame);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, m_pUnPackBuffer[m_uiBufferIdx]);
glWaitMarkerAMD(m_pUnPackBuffer[m_uiBufferIdx], pFrame->uiTransferId);
// Copy pinned mem to texture
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, m_uiTextureWidth, m_uiTextureHeight, m_nExtFormat, m_nType, NULL);
// Insert fence to determine when we can release the buffer
GLsync Fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
glPushMatrix();
// Scale quad to the AR of the incoming texture
glScalef(m_fAspectRatio, 1.0f, 1.0f);
// Draw quad with mapped texture
glBindBuffer(GL_ARRAY_BUFFER, m_uiQuad);
glDrawArrays(GL_QUADS, 0, 4);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glPopMatrix();
glBindTexture(GL_TEXTURE_2D, 0);
if (glIsSync(Fence))
{
glClientWaitSync(Fence, GL_SYNC_FLUSH_COMMANDS_BIT, OneSecond);
glDeleteSync(Fence);
}
m_pInputBuffer->releaseReadBuffer();
}
