Move SkGLContext and some GrGLInterface implementations to skgputest module

src/gpu/gl/command_buffer/SkCommandBufferGLContext.cpp

Index: src/gpu/gl/command_buffer/SkCommandBufferGLContext.cpp
diff --git a/src/gpu/gl/command_buffer/SkCommandBufferGLContext.cpp b/src/gpu/gl/command_buffer/SkCommandBufferGLContext.cpp
deleted file mode 100644
index 516c155fcc984d8f9132c9979fab6cbe3ab4e271..0000000000000000000000000000000000000000
--- a/src/gpu/gl/command_buffer/SkCommandBufferGLContext.cpp
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "SkOnce.h"
-#include "gl/GrGLInterface.h"
-#include "gl/GrGLAssembleInterface.h"
-#include "gl/command_buffer/SkCommandBufferGLContext.h"
-#include "../ports/SkOSEnvironment.h"
-#include "../ports/SkOSLibrary.h"
-
-#if defined SK_BUILD_FOR_MAC
-
-// EGL doesn't exist on the mac, so expose what we need to get the command buffer's EGL running.
-typedef void *EGLDisplay;
-typedef unsigned int EGLBoolean;
-typedef void *EGLConfig;
-typedef void *EGLSurface;
-typedef void *EGLContext;
-typedef int32_t EGLint;
-typedef void* EGLNativeDisplayType;
-typedef void* EGLNativeWindowType;
-typedef void (*__eglMustCastToProperFunctionPointerType)(void);
-#define EGL_FALSE 0
-#define EGL_OPENGL_ES2_BIT 0x0004
-#define EGL_CONTEXT_CLIENT_VERSION 0x3098
-#define EGL_NO_SURFACE ((EGLSurface)0)
-#define EGL_NO_DISPLAY ((EGLDisplay)0)
-#define EGL_NO_CONTEXT ((EGLContext)0)
-#define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)0)
-#define EGL_SURFACE_TYPE 0x3033
-#define EGL_PBUFFER_BIT 0x0001
-#define EGL_RENDERABLE_TYPE 0x3040
-#define EGL_RED_SIZE 0x3024
-#define EGL_GREEN_SIZE 0x3023
-#define EGL_BLUE_SIZE 0x3022
-#define EGL_ALPHA_SIZE 0x3021
-#define EGL_DEPTH_SIZE 0x3025
-#define EGL_STENCIL_SIZE 0x3025
-#define EGL_SAMPLES 0x3031
-#define EGL_SAMPLE_BUFFERS 0x3032
-#define EGL_NONE 0x3038
-#define EGL_WIDTH 0x3057
-#define EGL_HEIGHT 0x3056
-
-#else
-
-#include <EGL/egl.h>
-
-#endif
-
-typedef EGLDisplay (*GetDisplayProc)(EGLNativeDisplayType display_id);
-typedef EGLBoolean (*InitializeProc)(EGLDisplay dpy, EGLint *major, EGLint *minor);
-typedef EGLBoolean (*TerminateProc)(EGLDisplay dpy);
-typedef EGLBoolean (*ChooseConfigProc)(EGLDisplay dpy, const EGLint* attrib_list, EGLConfig* configs, EGLint config_size, EGLint* num_config);
-typedef EGLBoolean (*GetConfigAttrib)(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint* value);
-typedef EGLSurface (*CreateWindowSurfaceProc)(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint* attrib_list);
-typedef EGLSurface (*CreatePbufferSurfaceProc)(EGLDisplay dpy, EGLConfig config, const EGLint* attrib_list);
-typedef EGLBoolean (*DestroySurfaceProc)(EGLDisplay dpy, EGLSurface surface);
-typedef EGLContext (*CreateContextProc)(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint* attrib_list);
-typedef EGLBoolean (*DestroyContextProc)(EGLDisplay dpy, EGLContext ctx);
-typedef EGLBoolean (*MakeCurrentProc)(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
-typedef EGLBoolean (*SwapBuffersProc)(EGLDisplay dpy, EGLSurface surface);
-typedef __eglMustCastToProperFunctionPointerType (*GetProcAddressProc)(const char* procname);
-
-static GetDisplayProc gfGetDisplay = nullptr;
-static InitializeProc gfInitialize = nullptr;
-static TerminateProc gfTerminate = nullptr;
-static ChooseConfigProc gfChooseConfig = nullptr;
-static GetConfigAttrib gfGetConfigAttrib = nullptr;
-static CreateWindowSurfaceProc gfCreateWindowSurface = nullptr;
-static CreatePbufferSurfaceProc gfCreatePbufferSurface = nullptr;
-static DestroySurfaceProc gfDestroySurface = nullptr;
-static CreateContextProc gfCreateContext = nullptr;
-static DestroyContextProc gfDestroyContext = nullptr;
-static MakeCurrentProc gfMakeCurrent = nullptr;
-static SwapBuffersProc gfSwapBuffers = nullptr;
-static GetProcAddressProc gfGetProcAddress = nullptr;
-
-static void* gLibrary = nullptr;
-static bool gfFunctionsLoadedSuccessfully = false;
-
-static void load_command_buffer_functions() {
-    if (!gLibrary) {
-#if defined _WIN32
-        gLibrary = DynamicLoadLibrary("command_buffer_gles2.dll");
-#elif defined SK_BUILD_FOR_MAC
-        gLibrary = DynamicLoadLibrary("libcommand_buffer_gles2.dylib");
-#else
-        gLibrary = DynamicLoadLibrary("libcommand_buffer_gles2.so");
-#endif // defined _WIN32
-        if (gLibrary) {
-            gfGetDisplay = (GetDisplayProc)GetProcedureAddress(gLibrary, "eglGetDisplay");
-            gfInitialize = (InitializeProc)GetProcedureAddress(gLibrary, "eglInitialize");
-            gfTerminate = (TerminateProc)GetProcedureAddress(gLibrary, "eglTerminate");
-            gfChooseConfig = (ChooseConfigProc)GetProcedureAddress(gLibrary, "eglChooseConfig");
-            gfGetConfigAttrib = (GetConfigAttrib)GetProcedureAddress(gLibrary, "eglGetConfigAttrib");
-            gfCreateWindowSurface = (CreateWindowSurfaceProc)GetProcedureAddress(gLibrary, "eglCreateWindowSurface");
-            gfCreatePbufferSurface = (CreatePbufferSurfaceProc)GetProcedureAddress(gLibrary, "eglCreatePbufferSurface");
-            gfDestroySurface = (DestroySurfaceProc)GetProcedureAddress(gLibrary, "eglDestroySurface");
-            gfCreateContext = (CreateContextProc)GetProcedureAddress(gLibrary, "eglCreateContext");
-            gfDestroyContext = (DestroyContextProc)GetProcedureAddress(gLibrary, "eglDestroyContext");
-            gfMakeCurrent = (MakeCurrentProc)GetProcedureAddress(gLibrary, "eglMakeCurrent");
-            gfSwapBuffers = (SwapBuffersProc)GetProcedureAddress(gLibrary, "eglSwapBuffers");
-            gfGetProcAddress = (GetProcAddressProc)GetProcedureAddress(gLibrary, "eglGetProcAddress");
-
-            gfFunctionsLoadedSuccessfully = gfGetDisplay && gfInitialize && gfTerminate &&
-                                            gfChooseConfig && gfCreateWindowSurface &&
-                                            gfCreatePbufferSurface && gfDestroySurface &&
-                                            gfCreateContext && gfDestroyContext && gfMakeCurrent &&
-                                            gfSwapBuffers && gfGetProcAddress;
-
-        }
-    }
-}
-
-static GrGLFuncPtr command_buffer_get_gl_proc(void* ctx, const char name[]) {
-    if (!gfFunctionsLoadedSuccessfully) {
-        return nullptr;
-    }
-    return gfGetProcAddress(name);
-}
-
-SK_DECLARE_STATIC_ONCE(loadCommandBufferOnce);
-void LoadCommandBufferOnce() {
-    SkOnce(&loadCommandBufferOnce, load_command_buffer_functions);
-}
-
-const GrGLInterface* GrGLCreateCommandBufferInterface() {
-    LoadCommandBufferOnce();
-    if (!gfFunctionsLoadedSuccessfully) {
-        return nullptr;
-    }
-    return GrGLAssembleGLESInterface(gLibrary, command_buffer_get_gl_proc);
-}
-
-SkCommandBufferGLContext::SkCommandBufferGLContext()
-    : fContext(EGL_NO_CONTEXT)
-    , fDisplay(EGL_NO_DISPLAY)
-    , fSurface(EGL_NO_SURFACE) {
-
-    static const EGLint configAttribs[] = {
-        EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
-        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
-        EGL_RED_SIZE, 8,
-        EGL_GREEN_SIZE, 8,
-        EGL_BLUE_SIZE, 8,
-        EGL_ALPHA_SIZE, 8,
-        EGL_NONE
-    };
-
-    static const EGLint surfaceAttribs[] = {
-        EGL_WIDTH, 1,
-        EGL_HEIGHT, 1,
-        EGL_NONE
-    };
-
-    initializeGLContext(nullptr, configAttribs, surfaceAttribs);
-}
-
-SkCommandBufferGLContext::SkCommandBufferGLContext(void* nativeWindow, int msaaSampleCount) {
-    static const EGLint surfaceAttribs[] = { EGL_NONE };
-
-    EGLint configAttribs[] = {
-        EGL_RED_SIZE,       8,
-        EGL_GREEN_SIZE,     8,
-        EGL_BLUE_SIZE,      8,
-        EGL_ALPHA_SIZE,     8,
-        EGL_DEPTH_SIZE,     8,
-        EGL_STENCIL_SIZE,   8,
-        EGL_SAMPLE_BUFFERS, 1,
-        EGL_SAMPLES,        msaaSampleCount,
-        EGL_NONE
-    };
-    if (msaaSampleCount == 0) {
-        configAttribs[12] = EGL_NONE;
-    }
-
-    initializeGLContext(nativeWindow, configAttribs, surfaceAttribs);
-}
-
-void SkCommandBufferGLContext::initializeGLContext(void* nativeWindow, const int* configAttribs,
-                                                   const int* surfaceAttribs) {
-    LoadCommandBufferOnce();
-    if (!gfFunctionsLoadedSuccessfully) {
-        SkDebugf("Command Buffer: Could not load EGL functions.\n");
-        return;
-    }
-
-    // Make sure CHROMIUM_path_rendering is enabled for NVPR support.
-    sk_setenv("CHROME_COMMAND_BUFFER_GLES2_ARGS", "--enable-gl-path-rendering");
-    fDisplay = gfGetDisplay(EGL_DEFAULT_DISPLAY);
-    if (EGL_NO_DISPLAY == fDisplay) {
-        SkDebugf("Command Buffer: Could not create EGL display.\n");
-        return;
-    }
-
-    EGLint majorVersion;
-    EGLint minorVersion;
-    if (!gfInitialize(fDisplay, &majorVersion, &minorVersion)) {
-        SkDebugf("Command Buffer: Could not initialize EGL display.\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    EGLint numConfigs;
-    if (!gfChooseConfig(fDisplay, configAttribs, static_cast<EGLConfig*>(&fConfig), 1,
-                        &numConfigs) || numConfigs != 1) {
-        SkDebugf("Command Buffer: Could not choose EGL config.\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    if (nativeWindow) {
-        fSurface = gfCreateWindowSurface(fDisplay,
-                                         static_cast<EGLConfig>(fConfig),
-                                         (EGLNativeWindowType)nativeWindow,
-                                         surfaceAttribs);
-    } else {
-        fSurface = gfCreatePbufferSurface(fDisplay,
-                                          static_cast<EGLConfig>(fConfig),
-                                          surfaceAttribs);
-    }
-    if (EGL_NO_SURFACE == fSurface) {
-        SkDebugf("Command Buffer: Could not create EGL surface.\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    static const EGLint contextAttribs[] = {
-        EGL_CONTEXT_CLIENT_VERSION, 2,
-        EGL_NONE
-    };
-    fContext = gfCreateContext(fDisplay, static_cast<EGLConfig>(fConfig), nullptr, contextAttribs);
-    if (EGL_NO_CONTEXT == fContext) {
-        SkDebugf("Command Buffer: Could not create EGL context.\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    if (!gfMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
-        SkDebugf("Command Buffer: Could not make EGL context current.\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    SkAutoTUnref<const GrGLInterface> gl(GrGLCreateCommandBufferInterface());
-    if (nullptr == gl.get()) {
-        SkDebugf("Command Buffer: Could not create CommandBuffer GL interface.\n");
-        this->destroyGLContext();
-        return;
-    }
-    if (!gl->validate()) {
-        SkDebugf("Command Buffer: Could not validate CommandBuffer GL interface.\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    this->init(gl.release());
-}
-
-SkCommandBufferGLContext::~SkCommandBufferGLContext() {
-    this->teardown();
-    this->destroyGLContext();
-}
-
-void SkCommandBufferGLContext::destroyGLContext() {
-    if (!gfFunctionsLoadedSuccessfully) {
-        return;
-    }
-    if (fDisplay) {
-        gfMakeCurrent(fDisplay, 0, 0, 0);
-
-        if (fContext) {
-            gfDestroyContext(fDisplay, fContext);
-            fContext = EGL_NO_CONTEXT;
-        }
-
-        if (fSurface) {
-            gfDestroySurface(fDisplay, fSurface);
-            fSurface = EGL_NO_SURFACE;
-        }
-
-        gfTerminate(fDisplay);
-        fDisplay = EGL_NO_DISPLAY;
-    }
-}
-
-void SkCommandBufferGLContext::onPlatformMakeCurrent() const {
-    if (!gfFunctionsLoadedSuccessfully) {
-        return;
-    }
-    if (!gfMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
-        SkDebugf("Command Buffer: Could not make EGL context current.\n");
-    }
-}
-
-void SkCommandBufferGLContext::onPlatformSwapBuffers() const {
-    if (!gfFunctionsLoadedSuccessfully) {
-        return;
-    }
-    if (!gfSwapBuffers(fDisplay, fSurface)) {
-        SkDebugf("Command Buffer: Could not complete gfSwapBuffers.\n");
-    }
-}
-
-GrGLFuncPtr SkCommandBufferGLContext::onPlatformGetProcAddress(const char* name) const {
-    if (!gfFunctionsLoadedSuccessfully) {
-        return nullptr;
-    }
-    return gfGetProcAddress(name);
-}
-
-void SkCommandBufferGLContext::presentCommandBuffer() {
-    if (this->gl()) {
-        this->gl()->fFunctions.fFlush();
-    }
-
-    this->onPlatformSwapBuffers();
-}
-
-bool SkCommandBufferGLContext::makeCurrent() {
-    return gfMakeCurrent(fDisplay, fSurface, fSurface, fContext) != EGL_FALSE;
-}
-
-int SkCommandBufferGLContext::getStencilBits() {
-    EGLint result = 0;
-    gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_STENCIL_SIZE, &result);
-    return result;
-}
-
-int SkCommandBufferGLContext::getSampleCount() {
-    EGLint result = 0;
-    gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_SAMPLES, &result);
-    return result;
-}