Commit Graph

39 Commits

Author SHA1 Message Date
Greg Daniel
719239cd69 Move all Ganesh source files into ganesh subdirectory.
Change-Id: I238d29ba0250224fa593845ae65192653f58faff
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/528156
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
2022-04-07 21:06:50 +00:00
Michael Ludwig
0378307904 Move skgpu::v1-specific [Stroke|Path]Tessellators out of tessellate/
The static functionality for writing vertex buffers, constants, and
utility functions that were in the StrokeTessellator and PathTessellator
classes have been moved into Tessellation.h and a new
FixedCountBufferUtils.h.

The tessellator hierarchy has been moved into src/gpu/ops and all the
v1 guards are removed since they were already solely v1 after the static
functions were lifted out. The hierarchy and subclasses are preserved
but have been combined into just StrokeTessellator.h and
PathTessellator.h instead of separate files for the subclasses.

All the rest of the little changes are updating references and includes.

Bug: skia:13012
Change-Id: I90f2f53538349cf9ad1823a0c42fbdc772190a49
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/523189
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2022-03-22 16:04:13 +00:00
Michael Ludwig
35553cd3a7 Pull back PatchWriter from Tessellator APIs
This is pretty much just refactoring, condensing the virtual APIs of
PathTessellator and StrokeTessellator to not require exposing
PatchWriter. Once landed, this makes it easier to move PatchWriter to
a template where each Tessellator subclass has a different instantation.

Bug: skia:13012
Change-Id: I1211a707f3e6ac6b3543cf17a3d3af0372221ce4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/517978
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2022-03-09 17:13:27 +00:00
Michael Ludwig
220702dac0 Track min required segments in PatchWriter
Also handles automatically chopping curves to reach the maximum segments
allowed for the PatchWriter.

Change-Id: Iba817e817dd270d170d305c1256cf9aec7b803d2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/502056
Reviewed-by: Christopher Dalton <csmartdalton@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2022-02-08 16:30:26 +00:00
Michael Ludwig
f85d177016 Update PatchWriter API to writeFoo instead of << Foo
Change-Id: Iee54fd52b9ac291c82cfd9ce3a0876ee6c1f972a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/502787
Reviewed-by: Christopher Dalton <csmartdalton@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2022-02-07 21:26:39 +00:00
Michael Ludwig
3518875c21 Avoid RAII wrappers around PatchWriter
Instead of CubicPatch(writer) << control points ... code now writes
writer << Cubic(controlPoints). The main benefit of this is that the
control points are available to the PatchWriter. This allows it (in
follow up CLs) to automatically chop the curves and track the last join
control point.

Change-Id: I38b57a141261afd42e511cc195eb5e64a2382263
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/501837
Reviewed-by: Christopher Dalton <csmartdalton@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2022-02-03 02:30:52 +00:00
Chris Dalton
09ece934af Move breadcrumb and inner-fan triangles out of PathCurveTessellator
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>
2021-11-12 15:26:51 +00:00
Chris Dalton
f0f447c2f0 Yank GrPathTessellationShader out of PatchTessellators
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>
2021-11-11 22:28:40 +00:00
Chris Dalton
08a971126e Reland "Implement batching for convex tessellated paths"
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>
2021-11-11 20:01:40 +00:00
Robert Phillips
954e81a170 Revert "Implement batching for convex tessellated paths"
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>
2021-11-11 13:30:09 +00:00
Chris Dalton
9613060bdf 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>
2021-11-11 00:34:00 +00:00
Chris Dalton
6bb17ab48d Reland "Lift recursive curve culling out of tessellators"
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>
2021-10-29 21:59:30 +00:00
Greg Daniel
5f132753ec Revert "Lift recursive curve culling out of tessellators"
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>
2021-10-27 17:22:59 +00:00
Chris Dalton
75e1f4c028 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>
2021-10-27 16:39:36 +00:00
Chris Dalton
49c766732d Delete the skgpu::tess namespace
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>
2021-10-20 18:16:48 +00:00
Chris Dalton
0de8a96a72 Create an skgpu::tess namespace
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>
2021-10-13 16:54:28 +00:00
Chris Dalton
2a26c50a62 Store the correct number of samples in GrProgramInfo
Bug: skia:11396
Change-Id: I9480b89635bd7a6bdff8ab4876c8eeafdbc27c8b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/442096
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
2021-08-26 17:24:47 +00:00
Robert Phillips
24d622d6f9 Move the GrTessellationPathRenderer into the skgpu::v1 namespace
Bug: skia:11837
Change-Id: Ic445e99adbe2d2ada64f98f9f516c198a247ef09
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440876
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2021-08-25 17:16:28 +00:00
Robert Phillips
e453fa063d Move some v1-only gpu/tessellate files to gpu/ops
This CL just moves the files and renames them. It doesn't move them into the skgpu::v1 namespace.

Bug: skia:11837
Change-Id: Iab322d0dc5b5d1cfd32436785081539dc85c18d3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440776
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
2021-08-19 19:56:46 +00:00
Chris Dalton
eb0195e5b4 Delete all code related to disabling multisample
Bug: skia:12196
Change-Id: Iae403ae28e134e4762fc7f58bbfe22bf8c42ab97
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/436317
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
2021-08-19 16:56:48 +00:00
Robert Phillips
832f3fbcae Move GrTessellationPathFlags to their own header (GrTessTypes.h)
Having this enum on GrTessellationPathRenderer forced it to be over-#included and was blocking making GrTessellationPathRenderer.h v1-only.

Bug: skia:11837
Change-Id: I80660ed659946d7aa555057c9f4fd1136b44cca0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440536
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2021-08-19 14:47:45 +00:00
Robert Phillips
06273bcb8a Prepare headers for making all ops V1-only
Basically, ensure all the headers about to become V1-only only appear in contexts that are currently or will soon be V1-only.

This is almost all fallout from retracting some of the moving headers from other headers i.e.:

GrMeshDrawOp.h from GrOpFlushState.h
GrDrawOp.h from GrOpsRenderPass.h
GrDrawOp.h from GrOpsTask.h
GrSimpleMeshDrawOpHelper.h from GrTessellationShader.h


Bug: skia:11837
Change-Id: I939f5c82c3042e9ab00571b5796ab82dbe968085
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/438677
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2021-08-12 15:09:11 +00:00
Robert Phillips
4dca83162b Rename GrSurfaceDrawContext to skgpu::v1::SurfaceDrawContext
This CL is mostly mechanical. It:

replaces "src/gpu/GrSurfaceDrawContext.h" #includes with
         "src/gpu/v1/SurfaceDrawContext_v1.h" and reorders

replaces "class GrSurfaceDrawContext;" with
         "namespace skgpu { namespace v1 { class SurfaceDrawContext; }}"

replaces "GrSurfaceDrawContext*" with "auto" where possible
replaces "rtc" with "sdc"
replaces "surfaceDrawContext" with "sdc"
replaces GrSurfaceDrawContext with skgpu::v1::SurfaceDrawContext
reflows parameters as needed

This CL does not try to:

make skgpu::v1::SurfaceDrawContext V1-only
minimize the skgpu and/or skgpu::v1 prefixes

Those two tasks will be accomplished in follow up CLs. This CL is just trying to get the bulk of the mechanical changes comprehensibly landed.

Bug: skia:11837
Change-Id: I6fe59080249d585df8f5d27c6b67569cdc35842f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433156
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
2021-07-28 20:12:10 +00:00
Chris Dalton
17eaf62160 Update GrPathTessellator::prepare() to take a list of paths
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>
2021-07-28 16:56:51 +00:00
Chris Dalton
6966981ae0 Add a 'pathMatrix' to GrPathTessellator::prepare
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>
2021-07-27 20:31:57 +00:00
Robert Phillips
294723d690 Move GrOp::VisitProxyFunc to GrTypesPriv.h GrVisitProxyFunc
This is almost purely a query/replace CL (% the #include juggling).
The VisitProxyFunc is used by more than just the Ops and will probably
still be required in the NGA.

This is a prelude to making all the remaining GrOp-derived classes OGA-only.

Bug: skia:11837
Change-Id: If1c127e5c126c676be529ed2a61dd7953abb03d0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419162
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2021-06-17 17:23:35 +00:00
Chris Dalton
198ac15a90 Reland "Fix tessellation checks for "usesVaryingCoords""
This is a reland of bd727d0620

TBR=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>
2021-06-09 23:56:29 +00:00
Jim Van Verth
5d1599f69d Revert "Fix tessellation checks for "usesVaryingCoords""
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>
2021-06-09 22:09:03 +00:00
Chris Dalton
bd727d0620 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>
2021-06-09 21:38:44 +00:00
Chris Dalton
d2b8ba3369 Add a fixed-count impl for tessellated wedges
Bug: skia:10419
Change-Id: Ibb5adb581045e98cb636006aa84f792847041ca5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/416856
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
2021-06-09 19:04:14 +00:00
Chris Dalton
26666bda75 Replace the indirect patch tessellator with fixed count
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>
2021-06-08 23:16:50 +00:00
Chris Dalton
d9bdc32347 Split GrPathTessellator subclasses into their own files
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>
2021-06-02 18:46:56 +00:00
John Stiles
52cb1d059d Rename GrXferProcessor::DstProxyView to GrDstProxyView.
At present, only Xfer processors allow reading back from the destination
image since they are in charge of blending. However, we'd like to expose
the destination color to fragment processors and Runtime Effects in the
future. To make this possible, the DstProxyView will need to be
accessible outside of Xfer processors.

This CL migrates DstProxyView to be a top-level Ganesh class and fixes
up the references to it throughout Skia. It's interesting to note that
several call sites were already using typedefs to hide the class
nesting anyway.

Change-Id: I93a294aa097f9319a968503c4f2f7e4f388ff033
Bug: skia:12066
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/414899
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-06-02 18:00:47 +00:00
Chris Dalton
3b412788fd Move tessellation shader files into a subdirectory
Also renames GrStrokeShader -> GrStrokeTessellationShader.

Bug: skia:10419
Change-Id: I75b09f794ef86a4cd8c467a1fd61cc87fe68091b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/413756
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2021-06-01 20:26:13 +00:00
Chris Dalton
2f733ec2dd Restructure path tessellation shaders
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>
2021-06-01 19:11:43 +00:00
Chris Dalton
569c01bfa2 Simplify heuristics for selecting path tessellators
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>
2021-05-25 17:23:02 +00:00
Chris Dalton
8447f13c6d Chop tessellated curves that don't fit in a patch
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>
2021-05-21 23:01:43 +00:00
Chris Dalton
2758a3189a Add triangle support to GrPathOuterCurveTessellator
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>
2021-05-20 17:34:45 +00:00
Chris Dalton
a9f759d022 Rewrite the path tessellation sample
Use the GrPathTessellators directly instead of going through
GrPathStencilFillOp. Add keyboard shortcuts to toggle between the
different path tessellators.

Bug: skia:10419
Change-Id: I5d80731d26c9a77fb0eca07a7023c50848e29f7c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/409556
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2021-05-18 19:34:24 +00:00