c377baf406
TODO: unify with the placement new implementation in SkTemplatesPriv.h, once various issues there are overcome. reed@ should be taking the lead there. http://codereview.appspot.com/6384043/ git-svn-id: http://skia.googlecode.com/svn/trunk@4492 2bbb7eff-a529-9590-31e7-b0007b416f81
121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrContextFactory_DEFINED
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#define GrContextFactory_DEFINED
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#if SK_ANGLE
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#include "gl/SkANGLEGLContext.h"
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#endif
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#include "gl/SkDebugGLContext.h"
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#if SK_MESA
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#include "gl/SkMesaGLContext.h"
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#endif
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#include "gl/SkNativeGLContext.h"
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#include "gl/SkNullGLContext.h"
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#include "GrContext.h"
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/**
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* This is a simple class that is useful in test apps that use different
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* GrContexts backed by different types of GL contexts. It manages creating the
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* GL context and a GrContext that uses it. The GL/Gr contexts persist until the
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* factory is destroyed (though the caller can always grab a ref on the returned
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* GrContext to make it outlive the factory).
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*/
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class GrContextFactory : GrNoncopyable {
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public:
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/**
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* Types of GL contexts supported.
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*/
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enum GLContextType {
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kNative_GLContextType,
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#if SK_ANGLE
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kANGLE_GLContextType,
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#endif
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#if SK_MESA
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kMESA_GLContextType,
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#endif
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kNull_GLContextType,
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kDebug_GLContextType,
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};
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GrContextFactory() {
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}
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~GrContextFactory() {
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for (int i = 0; i < fContexts.count(); ++i) {
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fContexts[i].fGrContext->unref();
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fContexts[i].fGLContext->unref();
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}
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}
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/**
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* Get a GrContext initalized with a type of GL context.
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*/
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GrContext* get(GLContextType type) {
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for (int i = 0; i < fContexts.count(); ++i) {
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if (fContexts[i].fType == type) {
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return fContexts[i].fGrContext;
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}
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}
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SkAutoTUnref<SkGLContext> glCtx;
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SkAutoTUnref<GrContext> grCtx;
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switch (type) {
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case kNative_GLContextType:
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glCtx.reset(SkNEW(SkNativeGLContext));
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break;
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#ifdef SK_ANGLE
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case kANGLE_GLContextType:
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glCtx.reset(SkNEW(SkANGLEGLContext));
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break;
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#endif
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#ifdef SK_MESA
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case kMESA_GLContextType:
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glCtx.reset(SkNEW(SkMesaGLContext));
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break;
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#endif
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case kNull_GLContextType:
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glCtx.reset(SkNEW(SkNullGLContext));
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break;
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case kDebug_GLContextType:
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glCtx.reset(SkNEW(SkDebugGLContext));
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break;
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}
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static const int kBogusSize = 1;
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if (!glCtx.get()) {
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return NULL;
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}
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if (!glCtx.get()->init(kBogusSize, kBogusSize)) {
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return NULL;
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}
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GrPlatform3DContext p3dctx =
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reinterpret_cast<GrPlatform3DContext>(glCtx.get()->gl());
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grCtx.reset(GrContext::Create(kOpenGL_Shaders_GrEngine, p3dctx));
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if (!grCtx.get()) {
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return NULL;
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}
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GPUContext& ctx = fContexts.push_back();
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ctx.fGLContext = glCtx.get();
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ctx.fGLContext->ref();
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ctx.fGrContext = grCtx.get();
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ctx.fGrContext->ref();
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ctx.fType = type;
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return ctx.fGrContext;
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}
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private:
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struct GPUContext {
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GLContextType fType;
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SkGLContext* fGLContext;
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GrContext* fGrContext;
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};
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SkTArray<GPUContext, true> fContexts;
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};
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#endif
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