From 7c50d29f7ced3d60e52ee0146d982b49ea421de2 Mon Sep 17 00:00:00 2001
From: Kristian Høgsberg <krh@bitplanet.net>
Date: Fri, 8 Jan 2010 12:35:47 -0500
Subject: intel/DRI2: add DRI2flushExtension support with invalidate hook
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Needed to support the SwapBuffers code properly.

Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
---
 src/mesa/drivers/dri/intel/intel_screen.c | 39 ++++++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 8 deletions(-)

(limited to 'src/mesa/drivers/dri/intel/intel_screen.c')

diff --git a/src/mesa/drivers/dri/intel/intel_screen.c b/src/mesa/drivers/dri/intel/intel_screen.c
index a3d676741a..8251e91ace 100644
--- a/src/mesa/drivers/dri/intel/intel_screen.c
+++ b/src/mesa/drivers/dri/intel/intel_screen.c
@@ -236,6 +236,31 @@ static const __DRItexBufferExtension intelTexBufferExtension = {
    intelSetTexBuffer2,
 };
 
+static void
+intelDRI2Flush(__DRIdrawable *drawable)
+{
+   struct intel_context *intel = drawable->driContextPriv->driverPrivate;
+
+   if (intel->gen < 4)
+      INTEL_FIREVERTICES(intel);
+
+   if (intel->batch->map != intel->batch->ptr)
+      intel_batchbuffer_flush(intel->batch);
+}
+
+static void
+intelDRI2FlushInvalidate(__DRIdrawable *drawable)
+{
+   intelDRI2Flush(drawable);
+   drawable->validBuffers = GL_FALSE;
+}
+
+static const struct __DRI2flushExtensionRec intelFlushExtension = {
+    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
+    intelDRI2Flush,
+    intelDRI2FlushInvalidate,
+};
+
 static const __DRIextension *intelScreenExtensions[] = {
     &driReadDrawableExtension,
     &driCopySubBufferExtension.base,
@@ -244,6 +269,7 @@ static const __DRIextension *intelScreenExtensions[] = {
     &driMediaStreamCounterExtension.base,
     &intelTexOffsetExtension.base,
     &intelTexBufferExtension.base,
+    &intelFlushExtension.base,
     NULL
 };
 
@@ -524,11 +550,9 @@ intelFillInModes(__DRIscreenPrivate *psp,
    unsigned back_buffer_factor;
    int i;
 
-   /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
-    * support pageflipping at all.
-    */
    static const GLenum back_buffer_modes[] = {
-      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
+       GLX_NONE, GLX_SWAP_UNDEFINED_OML,
+       GLX_SWAP_EXCHANGE_OML, GLX_SWAP_COPY_OML
    };
 
    uint8_t depth_bits_array[3];
@@ -711,11 +735,10 @@ __DRIconfig **intelInitScreen2(__DRIscreenPrivate *psp)
    intelScreenPrivate *intelScreen;
    GLenum fb_format[3];
    GLenum fb_type[3];
-   /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
-    * support pageflipping at all.
-    */
+
    static const GLenum back_buffer_modes[] = {
-      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
+       GLX_NONE, GLX_SWAP_UNDEFINED_OML,
+       GLX_SWAP_EXCHANGE_OML, GLX_SWAP_COPY_OML
    };
    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
    int color;
-- 
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