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15c3406a
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2017-09-07T17:10:09
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Restructure InstanceID initialization to fix HLSL warning
This patch casts gl_InstanceID to uint before doing division by the
number of views to circumvent the HLSL compiler's warning on performance
degradation.
BUG=angleproject:2062
TEST=angle_end2end_tests
Change-Id: I326530ee112f34f82becdec5239edd5054c4104f
Reviewed-on: https://chromium-review.googlesource.com/655298
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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977ee7eb
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2017-07-21T11:38:27
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Add gl_ViewportIndex to the symbol table
gl_ViewportIndex is a GLSL built-in that's needed to implement
instanced multiview. It is a bit of a special case: it only exists in
desktop GLSL and not ESSL, and it shouldn't be exposed to the parser.
We add a new level to the symbol table that's hidden from the parser
to make adding this kind of builtins in AST transforms consistent with
the way ESSL builtins are supported.
BUG=angleproject:1490
TEST=angle_unittests
Change-Id: I51b2d983950b38c8e85e4b6ed00c6b39f9b3cb03
Reviewed-on: https://chromium-review.googlesource.com/580953
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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4e619f58
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2017-08-09T11:50:06
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Add branch for viewport or layer selection in VS
The patch extends the behavior of
SH_SELECT_VIEW_IN_NV_GLSL_VERTEX_SHADER so that either the viewport
or layer is selected based on the value of the internal uniform variable
MultiviewRenderPath.
BUG=angleproject:2062
TEST=angle_end2end_tests
TEST=angle_unittests
Change-Id: Ia311b12b1fed642dac78eba8732e2535242f34fd
Reviewed-on: https://chromium-review.googlesource.com/615260
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
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a5e693af
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2017-07-13T16:07:26
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Make unique id counter a member of TSymbolTable
This makes unique id counting thread-safe.
BUG=angleproject:624
TEST=angle_unittests
Change-Id: Ie0f2c7e574470b39750d37d2181c790bc874b275
Reviewed-on: https://chromium-review.googlesource.com/570419
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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daaff1cc
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2017-07-05T18:03:26
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Set correct symbol ids when referring to GLSL built-ins
The symbol ids are fetched from the symbol table. A new utility
function is added to make this more convenient.
BUG=angleproject:1490
TEST=angle_unittests, angle_end2end_tests
Change-Id: I780430e3386f6599503d8290c568ca9bc9cad147
Reviewed-on: https://chromium-review.googlesource.com/559535
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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c39a19aa
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2017-07-07T18:52:09
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Select viewport index in the GLSL/ESSL vertex shader
The patch enables viewport selection for multiview rendering in the
GLSL/ESSL vertex shader through the use of the GL_NV_viewport_array2
extension. The AST is modified only for GLSL and ESSL to include the
viewport selection expression after ViewID_OVR's initialization.
BUG=angleproject:2062
TEST=angle_unittests
Change-Id: Iee05bb5a4b687ed53ddbdd466f1572227b1f0cde
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ea39a223
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2017-07-06T12:47:59
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Simplify queueReplacement AST transform helper
queueReplacement is always called to replace the node that's currently
being visited in the traverser. The currently visited node can be
fetched automatically from the traversal path so it can be removed
from parameters of queueReplacement.
BUG=angleproject:2100
TEST=angle_unittests
Change-Id: I62ab6d1cd9c0d2b4c260af9f7c85bc156fb3f349
Reviewed-on: https://chromium-review.googlesource.com/562336
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
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7ef89a42
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2017-07-05T14:23:06
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Expose ViewID_OVR impostor in the fragment shader
The OVR_multiview specification states that gl_ViewID_OVR is visible
at each pipeline stage. Previously to this patch the ViewID_OVR
impostor was declared only in the vertex shader and occurrences of
gl_ViewID_OVR in the fragment shader were not being handled. The
patch addresses the issue by declaring the ViewID_OVR variable as
a vertex output in the vertex shader and as a fragment input
in the fragment shader.
BUG=angleproject:2062
TEST=angle_unittests
Change-Id: I895953e81d3632d9bb873e8ac081fdf36f63f6b7
Reviewed-on: https://chromium-review.googlesource.com/559337
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
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cccf2b00
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2017-07-05T14:50:54
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Reorganize AST traversal utility code
Define TIntermTraverser and TIntermLValueTrackingTraverser in a
separate header file. hash() function is moved out from
TIntermTraverser as it is not related to the core functionality
of traversing and transforming ASTs.
Also reorganize some traversers to follow common conventions:
- Intermediate output is now in OutputTree.h/.cpp
- Max tree depth check is now in IsASTDepthBelowLimit.h/.cpp
BUG=angleproject:1490
TEST=angle_unittests
Change-Id: Id4968aa9d4e24d0c5bac90dc147fc9f310de0184
Reviewed-on: https://chromium-review.googlesource.com/559531
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
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69056a1e
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2017-05-18T11:14:50
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Declare and initialize ViewID_OVR and InstanceID
The patch modifies the vertex shader's AST to declare and initialize
the global variables ViewID_OVR and InstanceID. Every occurrence of
gl_ViewID_OVR gets replaced by ViewID_OVR and initialized in main
with a value dependent on gl_InstanceID and the number of views.
To guarantee correct results for instanced rendering, each occurrence
of gl_InstanceID is replaced with InstanceID and initialized similarly.
BUG=angleproject:2062
TEST=angle_unittests
Change-Id: I48be688605b5af869bc370758e70ccc209ea4419
Reviewed-on: https://chromium-review.googlesource.com/548596
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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