xf86-video-intel: 2 commits - configure.ac src/intel_dri.c
Chad Versace
chadversary at kemper.freedesktop.org
Wed Jun 8 10:12:01 PDT 2011
configure.ac | 1 +
src/intel_dri.c | 44 ++++++++++++++++++++++++++++++++++++++------
2 files changed, 39 insertions(+), 6 deletions(-)
New commits:
commit a62db5b050dee10246c02c72385358acb5e72b56
Author: Chad Versace <chad at chad-versace.us>
Date: Mon May 23 14:23:54 2011 -0700
dri: Add support for DRI2BufferStencil and DRI2BufferHiz
And bump configure.ac to require dri2proto >= 2.6, because
DRI2BufferStencil and DRI2BufferHiz were introduced in that version.
When a client requests DRI2BufferHiz or DRI2BufferStencil,
I830DRI2CreateBuffer() now returns a Y-tiled buffer. The stencil buffer is
handled as a special case due its quirky pitch requirements.
CC: Eric Anholt <eric at anholt.net>
CC: Ian Romanick <idr at freedesktop.org>
CC: Kristian Høgsberg <krh at bitplanet.net
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Signed-off-by: Chad Versace <chad at chad-versace.us>
diff --git a/configure.ac b/configure.ac
index b4b693e..1776489 100644
--- a/configure.ac
+++ b/configure.ac
@@ -120,6 +120,7 @@ XORG_DRIVER_CHECK_EXT(DPMSExtension, xextproto)
PKG_CHECK_MODULES(XORG, [xorg-server >= 1.6 xproto fontsproto $REQUIRED_MODULES])
PKG_CHECK_MODULES(DRM, [libdrm >= 2.4.23])
PKG_CHECK_MODULES(DRI, [xf86driproto], , DRI=no)
+PKG_CHECK_MODULES(DRI2, [dri2proto >= 2.6])
PKG_CHECK_MODULES(PCIACCESS, [pciaccess >= 0.10])
sdkdir=`$PKG_CONFIG --variable=sdkdir xorg-server`
diff --git a/src/intel_dri.c b/src/intel_dri.c
index 4571d07..be5c6b1 100644
--- a/src/intel_dri.c
+++ b/src/intel_dri.c
@@ -329,11 +329,16 @@ I830DRI2CreateBuffer(DrawablePtr drawable, unsigned int attachment,
pixmap = get_front_buffer(drawable);
if (pixmap == NULL) {
unsigned int hint = INTEL_CREATE_PIXMAP_DRI2;
+ int pixmap_width = drawable->width;
+ int pixmap_height = drawable->height;
+ int pixmap_cpp = (format != 0) ? format : drawable->depth;
if (intel->tiling & INTEL_TILING_3D) {
switch (attachment) {
case DRI2BufferDepth:
case DRI2BufferDepthStencil:
+ case DRI2BufferStencil:
+ case DRI2BufferHiz:
if (SUPPORTS_YTILING(intel)) {
hint |= INTEL_CREATE_PIXMAP_TILING_Y;
break;
@@ -354,11 +359,28 @@ I830DRI2CreateBuffer(DrawablePtr drawable, unsigned int attachment,
}
}
+ /*
+ * The stencil buffer has quirky pitch requirements. From Vol
+ * 2a, 11.5.6.2.1 3DSTATE_STENCIL_BUFFER, field "Surface
+ * Pitch":
+ * The pitch must be set to 2x the value computed based on
+ * width, as the stencil buffer is stored with two rows
+ * interleaved.
+ * To accomplish this, we resort to the nasty hack of doubling
+ * the drm region's cpp and halving its height.
+ *
+ * If we neglect to double the pitch, then
+ * drm_intel_gem_bo_map_gtt() maps the memory incorrectly.
+ */
+ if (attachment == DRI2BufferStencil) {
+ pixmap_height /= 2;
+ pixmap_cpp *= 2;
+ }
+
pixmap = screen->CreatePixmap(screen,
- drawable->width,
- drawable->height,
- (format != 0) ? format :
- drawable->depth,
+ pixmap_width,
+ pixmap_height,
+ pixmap_cpp,
hint);
if (pixmap == NULL || intel_get_pixmap_bo(pixmap) == NULL) {
if (pixmap)
commit 263daba7e6afb37bd471fdc8dd8e4458da0a45ff
Author: Chad Versace <chad at chad-versace.us>
Date: Sun Jun 5 19:48:19 2011 -0700
dri: Do not create DRI2 buffers for unrecognized DRI2 buffer tokens
Before this commit, if a client were to request an unrecognized DRI2
buffer, such as DRI2BufferStencil, then I830DRI2CreateBuffer() allocated
and returned an X-tiled buffer by accident. The problem was that
unrecognized tokens were caught by the default case of a switch statement.
Now, when given unrecognized DRI2 tokens, I830DRI2CreateBuffers() returns
null.
This shouldn't break older Mesa versions, because they never query (via
DRI2GetBuffersWithFormat) for the drawable's DRI2BufferStencil.
CC: Eric Anholt <eric at anholt.net>
CC: Ian Romanick <idr at freedesktop.org>
CC: Kenneth Graunke <kenneth at whitecape.org>
CC: Kristian Høgsberg <krh at bitplanet.net
Signed-off-by: Chad Versace <chad at chad-versace.us>
diff --git a/src/intel_dri.c b/src/intel_dri.c
index 48d0f56..4571d07 100644
--- a/src/intel_dri.c
+++ b/src/intel_dri.c
@@ -338,10 +338,20 @@ I830DRI2CreateBuffer(DrawablePtr drawable, unsigned int attachment,
hint |= INTEL_CREATE_PIXMAP_TILING_Y;
break;
}
- default:
+ case DRI2BufferAccum:
+ case DRI2BufferBackLeft:
+ case DRI2BufferBackRight:
+ case DRI2BufferFakeFrontLeft:
+ case DRI2BufferFakeFrontRight:
+ case DRI2BufferFrontLeft:
+ case DRI2BufferFrontRight:
hint |= INTEL_CREATE_PIXMAP_TILING_X;
break;
- }
+ default:
+ free(privates);
+ free(buffer);
+ return NULL;
+ }
}
pixmap = screen->CreatePixmap(screen,
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