It turns out we can allow COHERENT storage/mappings all the time,
regardless of LLC vs non-LLC. It just means never using temporary
mappings to avoid GPU stalls, and on non-LLC we have to use the GTT intead
of CPU mappings. If we were to use CPU maps on non-LLC (which might be
useful if apps end up using buffer_storage on PBO reads, to avoid WC read
slowness), those would be PERSISTENT but not COHERENT, but doing that
would require us driving the clflushes from userspace somehow.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This extension provides a way for an application to render to multiple
surfaces with different buffer formats without having to use multiple
contexts. An EGLContext can be created without an EGLConfig by passing
EGL_NO_CONFIG_MESA. In that case there are no restrictions on the surfaces
that can be used with the context apart from that they must be using the same
EGLDisplay.
_mesa_initialze_context can now take a NULL gl_config which will mark the
context as ‘configless’. It will memset the visual to zero in that case.
Previously the i965 and i915 drivers were explicitly creating a zeroed visual
whenever 0 is passed for the EGLConfig. Mesa needs to be aware that the
context is configless because it affects the initial value to use for
glDrawBuffer. The first time the context is bound it will set the initial
value for configless contexts depending on whether the framebuffer used is
double-buffered.
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
On earlier hardware, we had to implement math in the shader to translate
Y-tiled or untiled coordinates to W-tiled coordinates (which is what
BLORP does today in order to texture from stencil buffers).
On Broadwell, we can simply state that it's W-tiled in SURFACE_STATE,
and adjust the pitch. This is much easier.
In the surface state code, I chose to handle the "should we sample depth
or stencil?" question separately from the setup for sampling from
stencil. This should make it work with the BindRenderbufferTexImage
hook as well, and hopefully be reusable for GL_ARB_texture_stencil8
someday.
v2: Update docs/GL3.txt (caught by Matt).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
While the GL_ARB_stencil_texturing extension does not allow the creation
of stencil textures, it does allow shaders to sample stencil values
stored in packed depth/stencil textures.
Specifically, applications can call glTexParameter* with a pname of
GL_DEPTH_STENCIL_TEXTURE_MODE and value of either GL_DEPTH_COMPONENT or
GL_STENCIL_INDEX to select which component they wish to sample. The
default value is GL_DEPTH_COMPONENT (for traditional depth sampling).
Shaders should use an unsigned integer sampler (presumably usampler2D)
to access stencil data. Otherwise, results are undefined. Using shadow
samplers with GL_STENCIL_INDEX selected also is undefined behavior.
This patch creates a new gl_texture_object field, StencilSampling, to
indicate that stencil should be sampled rather than depth. (I chose to
use a boolean since I figured it would be more convenient for drivers.)
It also introduces the [Get]TexParameter code to get and set the value,
and of course the extension plumbing.
v2: Also consider textures incomplete when sampling stencil with
non-NEAREST min/mag filters (caught by Eric Anholt).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
v2: add fw version query
v3: add README.VCE
v4: avoid error msg when kernel doesn't support it
Signed-off-by: Christian König <christian.koenig@amd.com>
Almost every driver already supported it. All current and future
Gallium drivers always support it, and most existing classic drivers
support it.
This only changes radeon and nouveau.
This extension only adds data types that can be passed to, for example,
glTexImage2D. It does not add internal formats. Since you can already
pass GL_FLOAT to glTexImage2D this shouldn't pose any additional issues
with those drivers. Note that r200 and i915 already supported this
extension, and they don't support floating-point textures either.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Mesa now has a real, feature-rich EGL implementation on X11 via xcb.
Therefore I believe there is no longer a practical need for the egl_glx
driver.
Furthermore, egl_glx appears to be unmaintained. The most recent
nontrivial commit to egl_glx was 6baa5f1 on 2011-11-25.
Tested by running weston-smoke in windowed Weston on X with i965.
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Kristian Høgsberg <krh@bitplanet.net>
v2: Note that Fredrik Höglund is working on GL_ARB_multi_bind, not
Maxence Le Doré. Suggested by Matt.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
The dd_function_table::BlitFramebuffer is already initialized to
_mesa_meta_BlitFramebuffer, so it should just work.
Tested on a Radeon 7500 (OpenGL renderer string: Mesa DRI R100 (RV200
5157) TCL DRI2). I couldn't do a full piglit run because it would tank
the system with or without this patch. I just ran all the blit tests
(-t blit to piglit-run.py). Only fbo-sys-sub-blit failed. All of the
other tests that weren't skipped (i.e., all the multisample and sRGB
tests skip) passed.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The dd_function_table::BlitFramebuffer is already initialized to
_mesa_meta_BlitFramebuffer, so it should just work.
Tested on a FireGL 8800 (OpenGL renderer string: Mesa DRI R200 (R200
5148) TCL DRI).
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This extension enabled the use of texture array with fixed-function and
assembly fragment shaders. No applications are known to use this
extension.
NOTE: This patch regresses GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY
cases of the copyteximage piglit test. The test is incorrectly using
texture arrays with fixed function while only requiring the
GL_EXT_texture_array extension. A fix for the test has been posted to
the piglit mailing list.
http://lists.freedesktop.org/archives/piglit/2013-November/008639.html
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This adds an extension called EGL_WL_create_wayland_buffer_from_image
which adds the following single function:
struct wl_buffer *
eglCreateWaylandBufferFromImageWL(EGLDisplay dpy, EGLImageKHR image);
The function creates a wl_buffer which shares its contents with the given
EGLImage. The expected use case for this is in a nested Wayland compositor
which is using subsurfaces to present buffers from its clients. Using this
extension it can attach the client buffers directly to the subsurface without
having to blit the contents into an intermediate buffer. The compositing can
then be done in the parent compositor.
The extension is only implemented in the Wayland EGL platform because of
course it wouldn't make sense anywhere else.
Eric Anholt
Neil Roberts
Carl Worth
Andreas Boll
Ian Romanick
Ilia Mirkin
Kenneth Graunke
Marek Olšák
Emil Velikov
Christian König
Dave Airlie
Chad Versace
Chris Forbes
Michel Dänzer
José Fonseca
Timothy Arceri
Brian Paul
Francisco Jerez
Maxence Le Doré
Nathan Kidd
Pi Tabred