Move SkGLContext and some GrGLInterface implementations to skgputest module

src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp

Index: src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
diff --git a/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp b/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
deleted file mode 100644
index 1644254c09800852c8b6e869debb501383d69c9a..0000000000000000000000000000000000000000
--- a/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "gl/SkGLContext.h"
-
-#include <GLES2/gl2.h>
-
-#define EGL_EGLEXT_PROTOTYPES
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include "gl/GrGLDefines.h"
-#include "gl/GrGLUtil.h"
-
-namespace {
-
-// TODO: Share this class with ANGLE if/when it gets support for EGL_KHR_fence_sync.
-class SkEGLFenceSync : public SkGpuFenceSync {
-public:
-    static SkEGLFenceSync* CreateIfSupported(EGLDisplay);
-
-    SkPlatformGpuFence SK_WARN_UNUSED_RESULT insertFence() const override;
-    bool waitFence(SkPlatformGpuFence fence, bool flush) const override;
-    void deleteFence(SkPlatformGpuFence fence) const override;
-
-private:
-    SkEGLFenceSync(EGLDisplay display) : fDisplay(display) {}
-
-    EGLDisplay                    fDisplay;
-
-    typedef SkGpuFenceSync INHERITED;
-};
-
-class EGLGLContext : public SkGLContext  {
-public:
-    EGLGLContext(GrGLStandard forcedGpuAPI);
-    ~EGLGLContext() override;
-
-    GrEGLImage texture2DToEGLImage(GrGLuint texID) const override;
-    void destroyEGLImage(GrEGLImage) const override;
-    GrGLuint eglImageToExternalTexture(GrEGLImage) const override;
-    SkGLContext* createNew() const override;
-
-private:
-    void destroyGLContext();
-
-    void onPlatformMakeCurrent() const override;
-    void onPlatformSwapBuffers() const override;
-    GrGLFuncPtr onPlatformGetProcAddress(const char*) const override;
-
-    EGLContext fContext;
-    EGLDisplay fDisplay;
-    EGLSurface fSurface;
-};
-
-EGLGLContext::EGLGLContext(GrGLStandard forcedGpuAPI)
-    : fContext(EGL_NO_CONTEXT)
-    , fDisplay(EGL_NO_DISPLAY)
-    , fSurface(EGL_NO_SURFACE) {
-    static const EGLint kEGLContextAttribsForOpenGL[] = {
-        EGL_NONE
-    };
-
-    static const EGLint kEGLContextAttribsForOpenGLES[] = {
-        EGL_CONTEXT_CLIENT_VERSION, 2,
-        EGL_NONE
-    };
-
-    static const struct {
-        const EGLint* fContextAttribs;
-        EGLenum fAPI;
-        EGLint  fRenderableTypeBit;
-        GrGLStandard fStandard;
-    } kAPIs[] = {
-        {   // OpenGL
-            kEGLContextAttribsForOpenGL,
-            EGL_OPENGL_API,
-            EGL_OPENGL_BIT,
-            kGL_GrGLStandard
-        },
-        {   // OpenGL ES. This seems to work for both ES2 and 3 (when available).
-            kEGLContextAttribsForOpenGLES,
-            EGL_OPENGL_ES_API,
-            EGL_OPENGL_ES2_BIT,
-            kGLES_GrGLStandard
-        },
-    };
-
-    size_t apiLimit = SK_ARRAY_COUNT(kAPIs);
-    size_t api = 0;
-    if (forcedGpuAPI == kGL_GrGLStandard) {
-        apiLimit = 1;
-    } else if (forcedGpuAPI == kGLES_GrGLStandard) {
-        api = 1;
-    }
-    SkASSERT(forcedGpuAPI == kNone_GrGLStandard || kAPIs[api].fStandard == forcedGpuAPI);
-
-    SkAutoTUnref<const GrGLInterface> gl;
-
-    for (; nullptr == gl.get() && api < apiLimit; ++api) {
-        fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-
-        EGLint majorVersion;
-        EGLint minorVersion;
-        eglInitialize(fDisplay, &majorVersion, &minorVersion);
-
-#if 0
-        SkDebugf("VENDOR: %s\n", eglQueryString(fDisplay, EGL_VENDOR));
-        SkDebugf("APIS: %s\n", eglQueryString(fDisplay, EGL_CLIENT_APIS));
-        SkDebugf("VERSION: %s\n", eglQueryString(fDisplay, EGL_VERSION));
-        SkDebugf("EXTENSIONS %s\n", eglQueryString(fDisplay, EGL_EXTENSIONS));
-#endif
-
-        if (!eglBindAPI(kAPIs[api].fAPI)) {
-            continue;
-        }
-
-        EGLint numConfigs = 0;
-        const EGLint configAttribs[] = {
-            EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
-            EGL_RENDERABLE_TYPE, kAPIs[api].fRenderableTypeBit,
-            EGL_RED_SIZE, 8,
-            EGL_GREEN_SIZE, 8,
-            EGL_BLUE_SIZE, 8,
-            EGL_ALPHA_SIZE, 8,
-            EGL_NONE
-        };
-
-        EGLConfig surfaceConfig;
-        if (!eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs)) {
-            SkDebugf("eglChooseConfig failed. EGL Error: 0x%08x\n", eglGetError());
-            continue;
-        }
-
-        if (0 == numConfigs) {
-            SkDebugf("No suitable EGL config found.\n");
-            continue;
-        }
-
-        fContext = eglCreateContext(fDisplay, surfaceConfig, nullptr, kAPIs[api].fContextAttribs);
-        if (EGL_NO_CONTEXT == fContext) {
-            SkDebugf("eglCreateContext failed.  EGL Error: 0x%08x\n", eglGetError());
-            continue;
-        }
-
-        static const EGLint kSurfaceAttribs[] = {
-            EGL_WIDTH, 1,
-            EGL_HEIGHT, 1,
-            EGL_NONE
-        };
-
-        fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, kSurfaceAttribs);
-        if (EGL_NO_SURFACE == fSurface) {
-            SkDebugf("eglCreatePbufferSurface failed. EGL Error: 0x%08x\n", eglGetError());
-            this->destroyGLContext();
-            continue;
-        }
-
-        if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
-            SkDebugf("eglMakeCurrent failed.  EGL Error: 0x%08x\n", eglGetError());
-            this->destroyGLContext();
-            continue;
-        }
-
-        gl.reset(GrGLCreateNativeInterface());
-        if (nullptr == gl.get()) {
-            SkDebugf("Failed to create gl interface.\n");
-            this->destroyGLContext();
-            continue;
-        }
-
-        if (!gl->validate()) {
-            SkDebugf("Failed to validate gl interface.\n");
-            this->destroyGLContext();
-            continue;
-        }
-
-        this->init(gl.release(), SkEGLFenceSync::CreateIfSupported(fDisplay));
-        break;
-    }
-}
-
-EGLGLContext::~EGLGLContext() {
-    this->teardown();
-    this->destroyGLContext();
-}
-
-void EGLGLContext::destroyGLContext() {
-    if (fDisplay) {
-        eglMakeCurrent(fDisplay, 0, 0, 0);
-
-        if (fContext) {
-            eglDestroyContext(fDisplay, fContext);
-            fContext = EGL_NO_CONTEXT;
-        }
-
-        if (fSurface) {
-            eglDestroySurface(fDisplay, fSurface);
-            fSurface = EGL_NO_SURFACE;
-        }
-
-        //TODO should we close the display?
-        fDisplay = EGL_NO_DISPLAY;
-    }
-}
-
-GrEGLImage EGLGLContext::texture2DToEGLImage(GrGLuint texID) const {
-    if (!this->gl()->hasExtension("EGL_KHR_gl_texture_2D_image")) {
-        return GR_EGL_NO_IMAGE;
-    }
-    GrEGLImage img;
-    GrEGLint attribs[] = { GR_EGL_GL_TEXTURE_LEVEL, 0, GR_EGL_NONE };
-    GrEGLClientBuffer clientBuffer = reinterpret_cast<GrEGLClientBuffer>(texID);
-    GR_GL_CALL_RET(this->gl(), img,
-                   EGLCreateImage(fDisplay, fContext, GR_EGL_GL_TEXTURE_2D, clientBuffer, attribs));
-    return img;
-}
-
-void EGLGLContext::destroyEGLImage(GrEGLImage image) const {
-    GR_GL_CALL(this->gl(), EGLDestroyImage(fDisplay, image));
-}
-
-GrGLuint EGLGLContext::eglImageToExternalTexture(GrEGLImage image) const {
-    GrGLClearErr(this->gl());
-    if (!this->gl()->hasExtension("GL_OES_EGL_image_external")) {
-        return 0;
-    }
-    typedef GrGLvoid (*EGLImageTargetTexture2DProc)(GrGLenum, GrGLeglImage);
-
-    EGLImageTargetTexture2DProc glEGLImageTargetTexture2D =
-        (EGLImageTargetTexture2DProc) eglGetProcAddress("glEGLImageTargetTexture2DOES");
-    if (!glEGLImageTargetTexture2D) {
-        return 0;
-    }
-    GrGLuint texID;
-    glGenTextures(1, &texID);
-    if (!texID) {
-        return 0;
-    }
-    glBindTexture(GR_GL_TEXTURE_EXTERNAL, texID);
-    if (glGetError() != GR_GL_NO_ERROR) {
-        glDeleteTextures(1, &texID);
-        return 0;
-    }
-    glEGLImageTargetTexture2D(GR_GL_TEXTURE_EXTERNAL, image);
-    if (glGetError() != GR_GL_NO_ERROR) {
-        glDeleteTextures(1, &texID);
-        return 0;
-    }
-    return texID;
-}
-
-SkGLContext* EGLGLContext::createNew() const {
-    SkGLContext* ctx = SkCreatePlatformGLContext(this->gl()->fStandard);
-    if (ctx) {
-        ctx->makeCurrent();
-    }
-    return ctx;
-}
-
-void EGLGLContext::onPlatformMakeCurrent() const {
-    if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
-        SkDebugf("Could not set the context.\n");
-    }
-}
-
-void EGLGLContext::onPlatformSwapBuffers() const {
-    if (!eglSwapBuffers(fDisplay, fSurface)) {
-        SkDebugf("Could not complete eglSwapBuffers.\n");
-    }
-}
-
-GrGLFuncPtr EGLGLContext::onPlatformGetProcAddress(const char* procName) const {
-    return eglGetProcAddress(procName);
-}
-
-static bool supports_egl_extension(EGLDisplay display, const char* extension) {
-    size_t extensionLength = strlen(extension);
-    const char* extensionsStr = eglQueryString(display, EGL_EXTENSIONS);
-    while (const char* match = strstr(extensionsStr, extension)) {
-        // Ensure the string we found is its own extension, not a substring of a larger extension
-        // (e.g. GL_ARB_occlusion_query / GL_ARB_occlusion_query2).
-        if ((match == extensionsStr || match[-1] == ' ') &&
-            (match[extensionLength] == ' ' || match[extensionLength] == '\0')) {
-            return true;
-        }
-        extensionsStr = match + extensionLength;
-    }
-    return false;
-}
-
-SkEGLFenceSync* SkEGLFenceSync::CreateIfSupported(EGLDisplay display) {
-    if (!display || !supports_egl_extension(display, "EGL_KHR_fence_sync")) {
-        return nullptr;
-    }
-    return new SkEGLFenceSync(display);
-}
-
-SkPlatformGpuFence SkEGLFenceSync::insertFence() const {
-    return eglCreateSyncKHR(fDisplay, EGL_SYNC_FENCE_KHR, nullptr);
-}
-
-bool SkEGLFenceSync::waitFence(SkPlatformGpuFence platformFence, bool flush) const {
-    EGLSyncKHR eglsync = static_cast<EGLSyncKHR>(platformFence);
-    return EGL_CONDITION_SATISFIED_KHR ==
-            eglClientWaitSyncKHR(fDisplay,
-                                 eglsync,
-                                 flush ? EGL_SYNC_FLUSH_COMMANDS_BIT_KHR : 0,
-                                 EGL_FOREVER_KHR);
-}
-
-void SkEGLFenceSync::deleteFence(SkPlatformGpuFence platformFence) const {
-    EGLSyncKHR eglsync = static_cast<EGLSyncKHR>(platformFence);
-    eglDestroySyncKHR(fDisplay, eglsync);
-}
-
-} // anonymous namespace
-
-SkGLContext* SkCreatePlatformGLContext(GrGLStandard forcedGpuAPI, SkGLContext* shareContext) {
-    SkASSERT(!shareContext);
-    if (shareContext) {
-        return nullptr;
-    }
-    EGLGLContext* ctx = new EGLGLContext(forcedGpuAPI);
-    if (!ctx->isValid()) {
-        delete ctx;
-        return nullptr;
-    }
-    return ctx;
-}