b0a8a377f8
is just a rename. The meat is in GrGeometryProcessor, GrProcessor, GrGL*Processor, GrProcessorStage, Gr*BackendProcessorFactory, GrProcessUnitTestFactory, and the builders BUG=skia: R=bsalomon@google.com Author: joshualitt@chromium.org Review URL: https://codereview.chromium.org/582963002
67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#ifndef GrGeometryProcessor_DEFINED
|
|
#define GrGeometryProcessor_DEFINED
|
|
|
|
#include "GrProcessor.h"
|
|
class GrBackendGeometryProcessorFactory;
|
|
|
|
/**
|
|
* A GrGeomteryProcessor is used to perform computation in the vertex shader and
|
|
* add support for custom vertex attributes. A GrGemeotryProcessor is typically
|
|
* tied to the code that does a specific type of high-level primitive rendering
|
|
* (e.g. anti-aliased circle rendering). The GrGeometryProcessor used for a draw is
|
|
* specified using GrDrawState. There can only be one geometry processor active for
|
|
* a draw. The custom vertex attributes required by the geometry processor must be
|
|
* added to the vertex attribute array specified on the GrDrawState.
|
|
* GrGeometryProcessor subclasses should be immutable after construction.
|
|
*/
|
|
class GrGeometryProcessor : public GrProcessor {
|
|
public:
|
|
GrGeometryProcessor() {}
|
|
|
|
virtual const GrBackendGeometryProcessorFactory& getFactory() const = 0;
|
|
|
|
/*
|
|
* This only has a max because GLProgramsTest needs to generate test arrays, and these have to
|
|
* be static
|
|
* TODO make this truly dynamic
|
|
*/
|
|
static const int kMaxVertexAttribs = 2;
|
|
typedef SkTArray<GrShaderVar, true> VertexAttribArray;
|
|
|
|
const VertexAttribArray& getVertexAttribs() const { return fVertexAttribs; }
|
|
|
|
protected:
|
|
/**
|
|
* Subclasses call this from their constructor to register vertex attributes (at most
|
|
* kMaxVertexAttribs). This must only be called from the constructor because GrProcessors are
|
|
* immutable.
|
|
*/
|
|
const GrShaderVar& addVertexAttrib(const GrShaderVar& var) {
|
|
SkASSERT(fVertexAttribs.count() < kMaxVertexAttribs);
|
|
return fVertexAttribs.push_back(var);
|
|
}
|
|
|
|
private:
|
|
SkSTArray<kMaxVertexAttribs, GrShaderVar, true> fVertexAttribs;
|
|
|
|
typedef GrProcessor INHERITED;
|
|
};
|
|
|
|
/**
|
|
* This creates an effect outside of the effect memory pool. The effect's destructor will be called
|
|
* at global destruction time. NAME will be the name of the created GrProcessor.
|
|
*/
|
|
#define GR_CREATE_STATIC_GEOMETRY_PROCESSOR(NAME, GP_CLASS, ARGS) \
|
|
static SkAlignedSStorage<sizeof(GP_CLASS)> g_##NAME##_Storage; \
|
|
static GrGeometryProcessor* NAME SkNEW_PLACEMENT_ARGS(g_##NAME##_Storage.get(), GP_CLASS, ARGS); \
|
|
static SkAutoTDestroy<GrGeometryProcessor> NAME##_ad(NAME);
|
|
|
|
#endif
|