Change-Id: I3dd8ecb7dc3a5f2781ea86e0526360a1fc3361cb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/498277
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
Adds makeVertexWriter[AtLeast] and makeIndexWriter[AtLeast] wrappers
around the vertex-space virtuals. Updates call sites of those functions
that immediately passed the returned pointer into a VertexWriter ctor
to call the new function.
This is simplification that will make changing the ctor of VertexWriter
easier (to come in another CL).
Change-Id: I8f4f1a9bed71e368828a42ed798fa6a93030a765
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/496776
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Bug: skia:12524
Change-Id: I31ddee40fed6e57caafe7a51fdd90459bd29cd6a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/474356
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Bug: skia:12524
Change-Id: I74ead0583a7b14822201e47bd40791c86a4caa91
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/470514
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
The callsites output these triangles now. This removes the final
direct Ganesh dependency from the tessellator code.
Bug: skia:12524
Change-Id: Id0d16839ed35a2bd9a812b8747ca8669fac5bed8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/470196
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
The tessellators are now agnostic of the shader class, which makes
them mostly usable by Graphite now. Also moves the code for writing
the middle-out vertex and index buffers into the PatchTessellators,
which makes sense since they also write the instance buffers.
Bug: skia:12524
Change-Id: I6c415645e389e056c0db1d93663b1b295d6b4535
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469631
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This is a reland of 9613060bdf
Original change's description:
> Implement batching for convex tessellated paths
>
> Moves the view matrix transformation onto the CPU (when local coords
> are not used), and plumbs a color attrib through the tessellation
> patches.
>
> Bug: skia:12524
> Change-Id: Ic4740048b4fc85cb18e7235a7754d57762db3daf
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/468997
> Reviewed-by: Michael Ludwig <michaelludwig@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
Bug: skia:12524
Change-Id: I77cd079d8921b224925bd2f7364c564822886d61
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/470436
Commit-Queue: Robert Phillips <robertphillips@google.com>
Auto-Submit: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
This reverts commit 9613060bdf.
Reason for revert: assertion failure on ANGLE
Original change's description:
> Implement batching for convex tessellated paths
>
> Moves the view matrix transformation onto the CPU (when local coords
> are not used), and plumbs a color attrib through the tessellation
> patches.
>
> Bug: skia:12524
> Change-Id: Ic4740048b4fc85cb18e7235a7754d57762db3daf
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/468997
> Reviewed-by: Michael Ludwig <michaelludwig@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
TBR=egdaniel@google.com,robertphillips@google.com,csmartdalton@google.com,michaelludwig@google.com,skcq-be@skia-corp.google.com.iam.gserviceaccount.com
Change-Id: Ie086376656777bb167075a9822d8c702cc7e41ec
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:12524
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/470296
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
Moves the view matrix transformation onto the CPU (when local coords
are not used), and plumbs a color attrib through the tessellation
patches.
Bug: skia:12524
Change-Id: Ic4740048b4fc85cb18e7235a7754d57762db3daf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/468997
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Also removes the path-specific functions now that it only maps points.
Bug: skia:12524
Change-Id: I63c0707b8b7814c93f472c33f108319774192cbd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/468038
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Rather than having this class write directly to a GPU buffer, which
also included an ugly hack to support extra instance data that was not
points, it is now just an iterator style object. This allows the
caller to iterate over all the triangles and do whatever it wants with
them. This is both faster and more versatile.
Bug: skia:12524
Change-Id: I43cdd721bc50607cc34ebf415390b4d493f4d697
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/466917
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Rather that recursively running Wang's formula and chopping, we run
Wang's once, divide by the maximum number of tessellation segments,
then chop in a flat loop. The next step will be to share this code
with other tessellators.
Bug: skia:12524
Change-Id: I6c5156f56885aee9f90b3be611fbef229740612d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/465362
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This is a reland of 75e1f4c028
Original change's description:
> Lift recursive curve culling out of tessellators
>
> We need recursive chopping/culling logic in order to draw
> astronomically large paths. But rather than do that at the same time
> the tessellators chop curves, this CL moves that logic into an
> SkPath -> SkPath transformation that runs ahead of time (and only if
> the path is extremely large to begin with). This will enable us to
> remove recursion from the tessellators and quickly determine ahead of
> time the size of buffers they need.
>
> Bug: skia:12524
> Change-Id: Ib2800fb23054f1548501811203173e58273fbc83
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463936
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
Bug: skia:12524
Change-Id: Idf54f0c2bddaaddc9fc17bee99c910f3961682a5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/465361
Reviewed-by: Greg Daniel <egdaniel@google.com>
Auto-Submit: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This is a reland of 8a2a020ef4
Original change's description:
> Create a common Tessellation.h header
>
> This header and corresponding implementation will contain common
> definitions and subroutines for tessellation code.
>
> Bug: skia:12524
> Change-Id: Ib29b444177f284acb88a3d5644936674c48c0b89
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463437
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
Bug: skia:12524
Change-Id: I874fed63cdab50df841e8a5d25d8c822690b5af8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/464294
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This reverts commit 8a2a020ef4.
Reason for revert: breaking chrome roll. Needs change in chrome to land first
Original change's description:
> Create a common Tessellation.h header
>
> This header and corresponding implementation will contain common
> definitions and subroutines for tessellation code.
>
> Bug: skia:12524
> Change-Id: Ib29b444177f284acb88a3d5644936674c48c0b89
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463437
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
Bug: skia:12524
Change-Id: Ifd7e81eed8c337506d67ecd0fd2501eedf2e4408
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/464297
Auto-Submit: Greg Daniel <egdaniel@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
This reverts commit 75e1f4c028.
Reason for revert: need to revert parent CL
Original change's description:
> Lift recursive curve culling out of tessellators
>
> We need recursive chopping/culling logic in order to draw
> astronomically large paths. But rather than do that at the same time
> the tessellators chop curves, this CL moves that logic into an
> SkPath -> SkPath transformation that runs ahead of time (and only if
> the path is extremely large to begin with). This will enable us to
> remove recursion from the tessellators and quickly determine ahead of
> time the size of buffers they need.
>
> Bug: skia:12524
> Change-Id: Ib2800fb23054f1548501811203173e58273fbc83
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463936
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
Bug: skia:12524
Change-Id: Ib075e8398767fd7b9f49e50ecee98ce47a2ad6b1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/464296
Auto-Submit: Greg Daniel <egdaniel@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
We need recursive chopping/culling logic in order to draw
astronomically large paths. But rather than do that at the same time
the tessellators chop curves, this CL moves that logic into an
SkPath -> SkPath transformation that runs ahead of time (and only if
the path is extremely large to begin with). This will enable us to
remove recursion from the tessellators and quickly determine ahead of
time the size of buffers they need.
Bug: skia:12524
Change-Id: Ib2800fb23054f1548501811203173e58273fbc83
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463936
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
This header and corresponding implementation will contain common
definitions and subroutines for tessellation code.
Bug: skia:12524
Change-Id: Ib29b444177f284acb88a3d5644936674c48c0b89
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463437
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
This class can now be shared with Graphite.
Bug: skia:12524
Change-Id: I7841410b3e8e111a12298efe0a1898a33295873a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/462556
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
This class is only meant to be used with Wang's formulas, so it
belongs in their name namespace.
Bug: skia:12524
Change-Id: Ib1667781b947a7f052af103b7bf9084d09a690de
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/461567
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Tessellation code can just exist in the skgpu namespace.
Bug: skia:12524
Change-Id: I44d473c5f82d608bb6cd3bb9df239c4f4028da4f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/461557
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
We are making src/gpu/tessellate independent of v1, and more represent
math and types that just know how to tessellate, so this seems like the
right place again for this file.
Bug: skia:12524
Change-Id: I773de3c0f93a57ce7ee16b44480667013f32ebd5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/459136
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
This is just a bunch of renaming, and for now the tessellate/shaders
directory remains untouched. The next steps will be to clean up and
remove all Ganesh v1 dependencies from tessellation.
Bug: skia:12524
Change-Id: I8cc166c0c78f9fb160de807131fa53fcc0765818
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/458876
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Mechanical.
Bug: skia:11837
Change-Id: Ic302ee314ad73ce034c8daac38416a8249a125a4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/442276
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
This allows us to batch multiple paths together in a single
tessellation. The first user will be the atlas, but the convex
renderer is also a good candidate.
Bug: skia:12258
Change-Id: I4d415d32bbf423cfd9b7ddf2543c21371936da90
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433776
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
The pathMatrix is applied on the CPU while the geometry is being
written out. It is a tool for batching, and is applied in addition to
the shader's on-GPU matrix. This CL also updates GrPathStencilCoverOp
do do all its path transformations with pathMatrix on the CPU side.
The next step will be for atlases to use the pathMatrix instead of
creating uber paths.
Bug: skia:12258
Change-Id: Ib924dfb06a2c0eed8f9045adc6ae9eefad510082
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433236
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
GrVertexWriter is itself a pointer, so this is a double reference.
It's ~20% faster on the micro benchmark to store this as a literal
GrVertexWriter. The motivation for this CL is that we need to optimize
the CPU-side processing for tessellation in order to place the
tessellation atlas above the cached triangulating path renderer in the
chain.
Bug: skia:12258
Change-Id: Ie10036d2fe618e848cdf67b9c23038fb9edf4c3b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433077
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
When isinf is not supported, we simply add another instanced attrib that
tells the shader exactly what type of curve it's dealing with.
Bug: chromium:1220246
Change-Id: I3496de674ce8c7df205e3c40559ae89dc29488e1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/429676
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This reverts commit 6904303a66.
Reason for revert: I don't trust it
Original change's description:
> Add an isinf() polyfill for tessellation shaders
>
> Tessellation uses infinity to flag conics, and also as a conic weight
> that converts them into triangles. The es2 shading language doesn't
> support infinity. This CL adds a "portable infinity" mode, where we
> pretend inputs >= 2^126 are infinity. The rationale for doing this is
> that those numbers are so large, they will overflow if we try to do any
> bezier math with then anyway.
>
> Bug: chromium:1220246
> Change-Id: I3ad29ebb6fbbad5d23cfdba7a2717605009f8180
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/423697
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: chromium:1220246
Change-Id: I1e8f555b766118a49987fd4c5ea150b59b07c1e9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/427920
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Tessellation uses infinity to flag conics, and also as a conic weight
that converts them into triangles. The es2 shading language doesn't
support infinity. This CL adds a "portable infinity" mode, where we
pretend inputs >= 2^126 are infinity. The rationale for doing this is
that those numbers are so large, they will overflow if we try to do any
bezier math with then anyway.
Bug: chromium:1220246
Change-Id: I3ad29ebb6fbbad5d23cfdba7a2717605009f8180
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/423697
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Tessellation should now be completely free of its dependence on
sk_VertexID.
Bug: chromium:1220246
Change-Id: I4027099392b92e45aee7d8417945335352e3416e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/423496
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
The Tessellator classes will survive in the NGA and they use
GrMeshDrawOp::Target - but GrMeshDrawOp will not survive.
This is a prelude to making all the remaining GrOp-derived classes OGA-only.
Bug: skia:11837
Change-Id: I62dc92e5f42d672342113f12dcedf3435fab993f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419198
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
This is a reland of bd727d0620TBR=jvanverth@google.com
Original change's description:
> Fix tessellation checks for "usesVaryingCoords"
>
> We can't use our hardware tessellation back door if any FPs in the
> program have varyings. Before this CL, we were forgetting to check the
> clip FP for strokes, and weren't checking any FPs yet for fills.
>
> Bug: skia:10419
> Change-Id: Ica631ab3cf0407fb359c02c6d53f88f5f301cddc
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417237
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
Bug: skia:10419
Change-Id: If8c1e18efc663641b2d565314110f66a6840f8bb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417317
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Change-Id: I09cde57375a742355ff4498549fb8f57299f4610
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417316
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
This reverts commit bd727d0620.
Reason for revert: Breaking builds.
Original change's description:
> Fix tessellation checks for "usesVaryingCoords"
>
> We can't use our hardware tessellation back door if any FPs in the
> program have varyings. Before this CL, we were forgetting to check the
> clip FP for strokes, and weren't checking any FPs yet for fills.
>
> Bug: skia:10419
> Change-Id: Ica631ab3cf0407fb359c02c6d53f88f5f301cddc
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417237
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
TBR=egdaniel@google.com,csmartdalton@google.com
Change-Id: I30d29f078d7b8cef146463feaaec0883ba5b9872
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10419
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417265
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
This reverts commit 6b2121d0ec.
Reason for revert: Perf regressions:
https://perf.skia.org/t/?begin=1623217407&end=1623217409&subset=all
Original change's description:
> Wean tessellation off SkPathOps
>
> Now that chopping and culling are fully implemented, and the indirect
> tessellators are gone, we don't need to crop huge paths anymore. The
> recursive chopping and culling will just do their thing.
>
> Bug: skia:9795
> Bug: skia:11268
> Bug: chromium:800804
> Change-Id: Ie34920c59af67035cf37eead69c5335693703001
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/416080
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Mike Reed <reed@google.com>
TBR=csmartdalton@google.com,reed@google.com
Change-Id: I265bd6991627b435a2a656cf9080b7e9d17e5ded
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:9795
Bug: skia:11268
Bug: chromium:800804
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417238
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
We can't use our hardware tessellation back door if any FPs in the
program have varyings. Before this CL, we were forgetting to check the
clip FP for strokes, and weren't checking any FPs yet for fills.
Bug: skia:10419
Change-Id: Ica631ab3cf0407fb359c02c6d53f88f5f301cddc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/417237
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Now that chopping and culling are fully implemented, and the indirect
tessellators are gone, we don't need to crop huge paths anymore. The
recursive chopping and culling will just do their thing.
Bug: skia:9795
Bug: skia:11268
Bug: chromium:800804
Change-Id: Ie34920c59af67035cf37eead69c5335693703001
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/416080
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Bug: skia:10419
Change-Id: Icb3395565060d736624d03ba1465926bd9188e44
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/416078
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Rearranges the algebra to use "precision". This makes it consistent
with the other formulas and removes the need for the caller to think
about inverting its precision value.
Bug: skia:10419
Change-Id: I186d03393952983e86b0bef69e1f89f86cdbb423
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/414616
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
It was becoming a bit chaotic to have so many different algorithms in
one file.
Bug: skia:10419
Change-Id: I477b7b65439d16b0f983e10952cb41ec881e8183
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/413856
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Merges the GrStrokePathShader and GrFillPathShader classes together.
Creates a new base class called GrPathTessellationShader. Now they all
have a uniform color and can all be draw to stencil and color both.
This is necessary cleanup in general, but will also allow us to create
a convex tessellation op that bypasses the stencil buffer.
Bug: skia:10419
Change-Id: Ifc492c94d3de044a36bd9ea95b1d5aa22e007905
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/413696
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
The fixed count stroke shader was executing a sort loop long enough to
handle 1024 parametric segments, when in reality it will never see
more than 48. This CL cuts the per-vertex sorting work nearly in half
by reducing the number of iterations from 10 to 6. (The indirect
tessellator continues to use 10 iterations.)
Bug: skia:10496
Change-Id: Idc21d6015d449f63915780972a8d487c9c6de6fe
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/412496
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Now that hardware tessellators chop, support raw triangles, and can
handle any path, we don't need complicated logic anymore to determine
when we can't use them. This CL simplifies the criteria for selecting
a tessellation algorithm and adds a fAlwaysPreferHardwareTessellation
context option to override it.
Bug: skia:10419
Change-Id: I8492e8f285ff27eb9d0dd6b1e9817dbeeb386c63
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/411496
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Previously we would completely disable hardware tessellation for a path
if there was any chance of a curve requiring more segments than
supported by the hardware. This CL updates the tessellators to simply
chop paths until they fit in patches, allowing us to finally draw any
path using hardware tessellation.
Bug: skia:10419
Change-Id: I5c9f78cda3e30b8810aff3cb908235965706f2d8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/410977
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Supports drawing exact triangles as conics with infinite weight. This
is necessary for drawing inner fans, breadcrumb triangles, and extra
triangles that will be introduced when we start splitting curves that
don't fit in a single patch.
Bug: skia:10419
Change-Id: If72560be4eb38340512be55dccea93b3a083fad5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/410836
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
