From 69c4ed205afbeb9ad937f079caace6cee19bd7b1 Mon Sep 17 00:00:00 2001 From: Tilman Sauerbeck Date: Sun, 15 Apr 2007 12:28:28 +0200 Subject: Make DRI initialization work when using EXA. Still need to implement InitBuffers and MoveBuffers for EXA. --- src/mga_exa.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) (limited to 'src/mga_exa.c') diff --git a/src/mga_exa.c b/src/mga_exa.c index b22716d..6c39f97 100644 --- a/src/mga_exa.c +++ b/src/mga_exa.c @@ -741,6 +741,80 @@ mgaWaitMarker(ScreenPtr pScreen, int marker) while (INREG (MGAREG_Status) & 0x10000); } +static void +init_dri(ScrnInfoPtr pScrn) +{ + MGAPtr pMga = MGAPTR(pScrn); + MGADRIServerPrivatePtr dri = pMga->DRIServerInfo; + int cpp = pScrn->bitsPerPixel / 8; + int widthBytes = pScrn->displayWidth * cpp; + int bufferSize = ((pScrn->virtualY * widthBytes + MGA_BUFFER_ALIGN) + & ~MGA_BUFFER_ALIGN); + int maxlines, mb; + + switch (pMga->Chipset) { + case PCI_CHIP_MGAG200_SE_A_PCI: + case PCI_CHIP_MGAG200_SE_B_PCI: + mb = 1; + break; + default: + mb = 16; + break; + } + + maxlines = (min(pMga->FbUsableSize, mb * 1024 * 1024)) / + (pScrn->displayWidth * pMga->CurrentLayout.bitsPerPixel / 8); + + dri->frontOffset = 0; + dri->frontPitch = widthBytes; + + /* Try for front, back, depth, and two framebuffers worth of + * pixmap cache. Should be enough for a fullscreen background + * image plus some leftovers. + */ + dri->textureSize = pMga->FbMapSize - 5 * bufferSize; + + /* If that gives us less than half the available memory, let's + * be greedy and grab some more. Sorry, I care more about 3D + * performance than playing nicely, and you'll get around a full + * framebuffer's worth of pixmap cache anyway. + */ + if (dri->textureSize < (int)pMga->FbMapSize / 2) { + dri->textureSize = pMga->FbMapSize - 4 * bufferSize; + } + + /* Check to see if there is more room available after the maximum + * scanline for textures. + */ + if ((int) pMga->FbMapSize - maxlines * widthBytes - bufferSize * 2 + > dri->textureSize) { + dri->textureSize = pMga->FbMapSize - maxlines * widthBytes - + bufferSize * 2; + } + + /* Set a minimum usable local texture heap size. This will fit + * two 256x256x32bpp textures. + */ + if (dri->textureSize < 512 * 1024) { + dri->textureOffset = 0; + dri->textureSize = 0; + } + + /* Reserve space for textures */ + dri->textureOffset = (pMga->FbMapSize - dri->textureSize + + MGA_BUFFER_ALIGN) & ~MGA_BUFFER_ALIGN; + + /* Reserve space for the shared depth buffer */ + dri->depthOffset = (dri->textureOffset - bufferSize + + MGA_BUFFER_ALIGN) & ~MGA_BUFFER_ALIGN; + dri->depthPitch = widthBytes; + + /* Reserve space for the shared back buffer */ + dri->backOffset = (dri->depthOffset - bufferSize + + MGA_BUFFER_ALIGN) & ~MGA_BUFFER_ALIGN; + dri->backPitch = widthBytes; +} + Bool mgaExaInit(ScreenPtr pScreen) { @@ -799,5 +873,8 @@ mgaExaInit(ScreenPtr pScreen) pExa->UploadToScreen = mgaUploadToScreen; + if (pMga->directRenderingEnabled) + init_dri(pScrn); + return exaDriverInit(pScreen, pExa); } -- cgit v1.2.3