This patch updates the blorp functions encode_msaa() and decode_msaa()
to properly handle the encoding of IMS MSAA buffers when
num_samples=8.
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
When operating in persample dispatch mode, the blorp engine would
previously assume that subspan N always represented sample N (this is
correct assuming 4x MSAA and a 16-wide dispatch). In order to support
8x MSAA, we must compute which sample is associated with each subspan,
using the "Starting Sample Pair Index" field in the thread payload.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
When rendering to an IMS MSAA surface on Gen7, blorp sets up the
rendering pipeline as though it were rendering to a single-sampled
surface; accordingly it must adjust the size of the primitive it sends
down the pipeline to account for the interleaving of samples in an IMS
surface.
This patch modifies the size adjustment code to properly handle 8x
MSAA, which makes room for the extra samples by using an interleaving
pattern that is twice as wide as 4x MSAA.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This patch adds a num_samples argument to the blorp function
manual_blend(), allowing it to be told how many samples need to be
blended together. Previously it assumed 4x MSAA, since that was all
we supported.
We also bump up LOG2_MAX_BLEND_SAMPLES from 2 to 3, so that
manual_blend() will be able to handle 8x MSAA.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
When the client program uses glDrawBuffer() or glDrawBuffers() to
select more than one color buffer for drawing into, and then performs
a blit, we need to blit into every single enabled draw buffer.
+2 oglconforms.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50407
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
This patch rearranges the order of steps performed by a blorp blit
from this:
- Sync up state of window system buffers.
- Find buffers.
- Find miptrees.
- Make sure buffer formats match.
- Handle mirroring.
- Make sure width and height match.
- Handle clipping/scissoring.
- Account for window system origin conventions.
- Do depth resolves, if applicable.
- Do the blit.
- Record the need for a future HiZ resolve, if applicable.
To this:
- Sync up state of window system buffers.
- Handle mirroring.
- Make sure width and height match.
- Handle clipping/scissoring.
- Account for window system origin conventions.
- Find buffers.
- Make sure buffer formats match.
- Find miptrees.
- Do depth resolves, if applicable.
- Do the blit.
- Record the need for a future HiZ resolve, if applicable.
The steps are the same, but they are now performed in an order that
will make it possible to implement correct DrawBuffers support. Note
that the last four steps are now in a separate function
(do_blorp_blit), since they will need to be executed repeatedly when
DrawBuffers support is added.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Previously, the blorp engine would fall back to swrast if the source
or destination of a blit had no associated miptree. This was
unnecessary, since _mesa_BlitFramebufferEXT() already takes care of
making the blit silently succeed if there are no buffers bound, so the
fallback paths could never actually happen in practice.
Removing these fallback paths will simplify the implementation of
correct DrawBuffers support in blorp.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
This patch modifies the order of operations in the blorp engine so
that clipping and scissoring are performed before adjusting the
coordinates to account for the difference in origin convention between
window system buffers and framebuffer objects. Previously, we would
do clipping and scissoring after adjusting for origin conventions, so
we would get scissoring wrong in window system buffers.
Fixes Piglit test "fbo-scissor-blit window".
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
When checking that the source and destination dimensions match, we
don't need to store the width and height in variables; doing so just
risks confusion since right after the check, we do clipping and
scissoring, which may alter the width and height.
No functional change.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
On Gen6, multisampled null render targets don't seem to work
properly--they cause the GPU to hang. So, as a workaround, we render
into a dummy color buffer.
Fortunately this situation (multisampled rendering without a color
buffer) is rare, and we don't have to waste too much memory, because
we can give the workaround buffer a very small pitch.
Fixes piglit test "EXT_framebuffer_multisample/no-color {2,4}
depth-computed *" on Gen6.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
The HW docs say that the width and height of null render targets need
to match the width and height of the corresponding depth and/or
stencil buffers, and that they need to be marked as Y-tiled. Although
leaving these values at 0 doesn't seem to cause any ill effects, it
seems wise to follow the documented requirements.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Previously, we used the number of samples in draw buffer 0 to
determine whether to set up the 3D pipeline for multisampling. Using
the visual is cleaner, and has the benefit of working properly when
there is no color buffer.
Fixes all piglit tests "EXT_framebuffer_multisample/no-color" on Gen7.
On Gen6, the "depth-computed" variants of these tests still fail; this
will be addresed in a later patch.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
This patch ensures that Visual.samples and Visual.sampleBuffers are
set correctly even in the case where there is no color buffer.
Previously, these values would retain their default value of 0 in this
circumstance, even if the depth or stencil buffer was multisampled.
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Mesa misses a few checks when compiling on a uclibc system
which cause it to fall back on glibc-ism. This patch
addresses those issues.
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
The kernel streamout support was supposed to get into 3.3 along
the tiling change and thus use the same kernel version bump of
2.13 to report userspace that streamout register were supported.
This is not what happen. So as streamout kernel support did not
bump the kernel driver version, rely on kernel 2.14 version bump
to know if streamout is enabled or not. Which means you need at
least 3.4 kernel.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
The error was being set on the non-error path, rather
than the error path.
NOTE: This is a candidate for the 8.0 branch.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
For 'non-legacy' contexts we will want to generate an error
if an uninstalled function is called.
The effect of this change will be that we can avoid installing
legacy functions, and they will then generate an error as
needed for deprecated functions in GL >= 3.1.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Commit 2d4b77c7 (automake: Convert src/mesa/drivers/x11/Makefile to
automake, 2012-06-12) dropped the old Makefile, which used GL_LIB, and
replaced it with a Makefile.am hard-coding the name "GL". This broke
handling of --enable-mangling and --with-gl-lib-name options which
depend on GL_LIB to specify the GL library name.
Use "@GL_LIB@" in src/mesa/drivers/x11/Makefile.am to configure the
library name. Also use this approach to simplify src/glx/Makefile.am
and drop the HAVE_MANGLED_GL conditional. While at it, fix the
compatibility link we create in "lib" for the software-only driver to
use version GL_MAJOR instead of hard-coding "1".
Reviewed-by: Dan Nicholson <dbn.lists@gmail.com>
Paul Berry
Anthony G. Basile
Jerome Glisse
Jordan Justen
Brian Paul
Christian König
Brad King
Marek Olšák