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853dc1ab
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2014-11-06T17:25:48
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Add mediump and lowp precision emulation support for GLSL output
This implements the rounding as specified in WEBGL_debug_shader_precision
extension proposal for desktop GLSL and ESSL output. The bulk of the new
functionality is added in the form of a new EmulatePrecision AST
traverser, which inserts calls to the rounding routines angle_frm and
angle_frl in the appropriate places, and writes the rounding routines
themselves to the shader.
Compound assignments which are subject to emulation are transformed from
"x op= y" to "angle_compound_op_frm(x, y)", a call to a function which
does the appropriate rounding and places the result of the operation to
x.
The angle_ prefixed names should not clash with user-defined names if
name hashing is on. If name hashing is not on, the precision emulation
can only be used if the angle_ prefix is reserved for use by ANGLE.
To support the rounding routines in output, a new operator type is added
for internal helper function calls, which are not subject to name
hashing.
In ESSL output, all variables are forced to highp when precision
emulation is on to ensure consistency with how precision emulation
performs on desktop.
Comprehensive tests for the added code generation are included.
BUG=angle:787
Change-Id: I0d0ad9327888f803a32e79b64b08763c654c913b
Reviewed-on: https://chromium-review.googlesource.com/229631
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Olli Etuaho <oetuaho@nvidia.com>
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76acee83
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2014-11-04T13:44:03
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Name mangle function prototypes and print them in interm output
This patch changes function prototype handling so that they get assigned
the same kind of a mangled name as function definitions and function
calls. This name is now also printed in interm output so that function
prototypes can be accurately identified in the interm output.
BUG=angle:821
TEST=compiler_tests
Change-Id: Ia150b8ac5b816b8096c964767cd8666bdee28539
Reviewed-on: https://chromium-review.googlesource.com/227390
Reviewed-by: Nicolas Capens <capn@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Olli Etuaho <oetuaho@nvidia.com>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
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2a517272
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2014-10-27T16:09:57
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Fix an issue with separate invariant statement.
Basically we end up with an extra "invariant xxx ;;" on GL backend.
This is not handled correctly by Mac drivers and also out shader translator.
BUG=angle:776
TEST=webgl conformance on mac/windows
Change-Id: If32867efba64ab0d3e6e690155790b90d736439f
Reviewed-on: https://chromium-review.googlesource.com/225780
Tested-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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0783efd8
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2014-10-21T15:51:59
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Fix initialization sequence translation bug.
BUG=angle:805
TEST=https://www.khronos.org/registry/webgl/sdk/tests/conformance/glsl/misc/expression-list-in-declarator-initializer.html
Change-Id: I94fbdd0824dbe73034f8bf022aa53627582ad48b
Reviewed-on: https://chromium-review.googlesource.com/224813
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
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94ac7b78
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2014-10-15T18:22:08
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Invariant related processing.
* Fix a bug in PreProcessor for STDGL pragma.
* Record all invariant settings and set them in ShaderVariable.
* Write #pragma STDGL invariant(all) in GL
BUG=angle:776
TEST=https://www.khronos.org/registry/webgl/sdk/tests/conformance/glsl/misc/shaders-with-invariance.html
Change-Id: Ie28b75480deed79f0c9f26e3b98f1778d1290182
Reviewed-on: https://chromium-review.googlesource.com/223610
Tested-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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de1e00e1
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2014-10-09T16:55:32
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Implement support of unary operator "+" in translator.
BUG=angle:779
TEST=conformance/glsl/misc/struct-unary-operators.html
Change-Id: Ia827e07dcfc8ad3bbbc078e54336815be9027945
Reviewed-on: https://chromium-review.googlesource.com/222720
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
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3b5c2dae
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2014-08-19T15:23:32
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Add a new invariant declaration operator.
BUG=angle:711
Change-Id: I54a48b636a68c317b8d44ee2d578847b80095289
Reviewed-on: https://chromium-review.googlesource.com/213500
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>
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1c28e1f0
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2014-08-04T11:37:54
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Fix shaders with invariant keyword.
We would trigger assertion failures in Debug mode, and fail to
parse and translate correctly in Release.
BUG=angle:711
Change-Id: Ibb7f33b288376617598578f48c7bbdbdec044279
Reviewed-on: https://chromium-review.googlesource.com/210822
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Nicolas Capens <capn@chromium.org>
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e40d1e9c
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2014-07-16T17:40:36
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Fix style violations.
BUG=angle:650
TEST=no behavior change
Change-Id: I3096615a181b1ec2c18ce60566c3d6249975b84e
Reviewed-on: https://chromium-review.googlesource.com/208569
Tested-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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16004fca
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2014-06-11T11:29:11
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Eliminate conversion operations.
They've been replaced by using constructor nodes, so any code handling conversion operators
can be removed.
BUG=380353
Change-Id: I70413179e7443efccbf997a5dd0f053c23689589
Reviewed-on: https://chromium-review.googlesource.com/203453
Tested-by: Nicolas Capens <nicolascapens@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
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01f85ac8
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2014-06-06T11:55:04
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Refactor GLSL scoped structure handling.
With a unique ID, similar to how we handle scoped structures
in the HLSL translator, we can simplify the declared structure
check.
BUG=angle:618
Change-Id: I5fe61c8d353650ac67a7c7ecdf53a70b91a9b717
Reviewed-on: https://chromium-review.googlesource.com/202500
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>
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9eedea03
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2014-05-12T16:02:35
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Fix code styles in OutputGLSLBase, SymbolTable, and Types.
I came across these three classes in the last CL, so do some
cleanup as I touched these classes.
BUG=
TEST=webgl conformance, no regressions
Change-Id: I2819bab5965fcb4917f85c2eded571a7f95ab9a2
Reviewed-on: https://chromium-review.googlesource.com/199423
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
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904a9164
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2014-05-09T14:07:45
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Fix nested struct scope support in GL backend.
Basically we should be able to reuse a struct name once the previous
use is out of the scope, or we can reuse it if we are in a inner scope
than where it is defined before.
BUG=368910
BUG=angle:618
TEST=conformance/glsl/bugs/nested-structs-with-same-name.html
Change-Id: Icfac76b844deaca0c8a0501d7426ff3802e657dc
Reviewed-on: https://chromium-review.googlesource.com/199137
Reviewed-by: Nicolas Capens <nicolascapens@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
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46485086
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2014-04-15T13:12:50
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Implement EXT_shader_texture_lod
BUG=angle:551
Change-Id: I81d7574a15861f1b24ddf6147cf71adbf20e10f3
Reviewed-on: https://chromium-review.googlesource.com/194960
Tested-by: Nicolas Capens <nicolascapens@chromium.org>
Reviewed-by: Shannon Woods <shannonwoods@chromium.org>
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550c600b
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2014-02-26T15:40:48
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Improvement on loop unrolling with loops indexing sampler arrays
1) Before this workaround is hardwired on mac, now we move it behind a compil
2) Fix the issue where "break" inside the loop isn't handled while unrolled.
BUG=338474
TEST=webgl conformance test sampler-array-using-loop-index.html
Change-Id: I4996a42c2dea39a8a5af772c256f8e3cb383f59a
Reviewed-on: https://chromium-review.googlesource.com/188079
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
Conflicts:
include/GLSLANG/ShaderLang.h
src/compiler/translator/ValidateLimitations.cpp
Change-Id: I546197bd7df1634ebccdd380be14c3250cd56151
Reviewed-on: https://chromium-review.googlesource.com/189061
Reviewed-by: Shannon Woods <shannonwoods@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
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7cab38b5
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2013-10-15T12:59:30
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Add an option to unfold short circuiting in AST.
We replace "a || b" with "a ? true : b",
"a && b" with "a ? b : false".
This is to work around short circuiting bug in Mac drivers.
ANGLEBUG=482
TEST=webgl conformance tests
R=alokp@chromium.org, kbr@chromium.org
Review URL: https://codereview.appspot.com/14529048
Conflicts:
src/build_angle.gypi
src/compiler/translator/Compiler.cpp
Change-Id: Ic2384a97d58f54294efcb3a012deb2007a9fc658
Reviewed-on: https://chromium-review.googlesource.com/178996
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Tested-by: Shannon Woods <shannonwoods@chromium.org>
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17732823
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2013-08-29T13:46:49
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Moved the compiler source files into directories based on their project and added a compiler.gypi to generate the compiler projects.
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