Move SkGLContext and some GrGLInterface implementations to skgputest module

tools/gpu/gl/debug/DebugGLContext.cpp

Index: tools/gpu/gl/debug/DebugGLContext.cpp
diff --git a/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp b/tools/gpu/gl/debug/DebugGLContext.cpp
similarity index 76%
rename from src/gpu/gl/debug/GrGLCreateDebugInterface.cpp
rename to tools/gpu/gl/debug/DebugGLContext.cpp
index 43fc8dfad9c3eba7138fe4a1b94eaa844eeb5d52..f4cbbea6802f83606aa376da8319c2f838adf058 100644
--- a/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp
+++ b/tools/gpu/gl/debug/DebugGLContext.cpp
@@ -6,8 +6,7 @@
  * found in the LICENSE file.
  */
 
-
-#include "gl/GrGLInterface.h"
+#include "DebugGLContext.h"
 
 #include "GrBufferObj.h"
 #include "GrFrameBufferObj.h"
@@ -218,254 +217,254 @@ public:
         }
     }
 
-     GrGLvoid useProgram(GrGLuint programID) override {
+    GrGLvoid useProgram(GrGLuint programID) override {
 
-         // A programID of 0 is legal
-         GrProgramObj *program = FIND(programID, GrProgramObj, kProgram_ObjTypes);
+        // A programID of 0 is legal
+        GrProgramObj *program = FIND(programID, GrProgramObj, kProgram_ObjTypes);
 
-         this->useProgram(program);
-     }
+        this->useProgram(program);
+    }
 
-     GrGLvoid bindFramebuffer(GrGLenum target, GrGLuint frameBufferID) override {
+    GrGLvoid bindFramebuffer(GrGLenum target, GrGLuint frameBufferID) override {
 
-         GrAlwaysAssert(GR_GL_FRAMEBUFFER == target ||
-                        GR_GL_READ_FRAMEBUFFER == target ||
-                        GR_GL_DRAW_FRAMEBUFFER);
+        GrAlwaysAssert(GR_GL_FRAMEBUFFER == target ||
+                       GR_GL_READ_FRAMEBUFFER == target ||
+                       GR_GL_DRAW_FRAMEBUFFER);
 
-         // a frameBufferID of 0 is acceptable - it binds to the default
-         // frame buffer
-         GrFrameBufferObj *frameBuffer = FIND(frameBufferID, GrFrameBufferObj,
-                                              kFrameBuffer_ObjTypes);
+        // a frameBufferID of 0 is acceptable - it binds to the default
+        // frame buffer
+        GrFrameBufferObj *frameBuffer = FIND(frameBufferID, GrFrameBufferObj,
+                                             kFrameBuffer_ObjTypes);
 
-         this->setFrameBuffer(frameBuffer);
-     }
+        this->setFrameBuffer(frameBuffer);
+    }
 
-     GrGLvoid bindRenderbuffer(GrGLenum target, GrGLuint renderBufferID) override {
+    GrGLvoid bindRenderbuffer(GrGLenum target, GrGLuint renderBufferID) override {
 
-         GrAlwaysAssert(GR_GL_RENDERBUFFER == target);
+        GrAlwaysAssert(GR_GL_RENDERBUFFER == target);
 
-         // a renderBufferID of 0 is acceptable - it unbinds the bound render buffer
-         GrRenderBufferObj *renderBuffer = FIND(renderBufferID, GrRenderBufferObj,
-                                                kRenderBuffer_ObjTypes);
+        // a renderBufferID of 0 is acceptable - it unbinds the bound render buffer
+        GrRenderBufferObj *renderBuffer = FIND(renderBufferID, GrRenderBufferObj,
+                                               kRenderBuffer_ObjTypes);
 
-         this->setRenderBuffer(renderBuffer);
-     }
+        this->setRenderBuffer(renderBuffer);
+    }
 
-     GrGLvoid deleteTextures(GrGLsizei n, const GrGLuint* textures) override {
-         // first potentially unbind the texture
-         for (unsigned int i = 0; i < kDefaultMaxTextureUnits; ++i) {
-             GrTextureUnitObj *pTU = this->getTextureUnit(i);
+    GrGLvoid deleteTextures(GrGLsizei n, const GrGLuint* textures) override {
+        // first potentially unbind the texture
+        for (unsigned int i = 0; i < kDefaultMaxTextureUnits; ++i) {
+            GrTextureUnitObj *pTU = this->getTextureUnit(i);
 
-             if (pTU->getTexture()) {
-                 for (int j = 0; j < n; ++j) {
+            if (pTU->getTexture()) {
+                for (int j = 0; j < n; ++j) {
 
-                     if (textures[j] == pTU->getTexture()->getID()) {
-                         // this ID is the current texture - revert the binding to 0
-                         pTU->setTexture(nullptr);
-                     }
-                 }
-             }
-         }
+                    if (textures[j] == pTU->getTexture()->getID()) {
+                        // this ID is the current texture - revert the binding to 0
+                        pTU->setTexture(nullptr);
+                    }
+                }
+            }
+        }
 
-         // TODO: fuse the following block with DeleteRenderBuffers?
-         // Open GL will remove a deleted render buffer from the active
-         // frame buffer but not from any other frame buffer
-         if (this->getFrameBuffer()) {
+        // TODO: fuse the following block with DeleteRenderBuffers?
+        // Open GL will remove a deleted render buffer from the active
+        // frame buffer but not from any other frame buffer
+        if (this->getFrameBuffer()) {
 
-             GrFrameBufferObj *frameBuffer = this->getFrameBuffer();
+            GrFrameBufferObj *frameBuffer = this->getFrameBuffer();
 
-             for (int i = 0; i < n; ++i) {
+            for (int i = 0; i < n; ++i) {
 
-                 if (frameBuffer->getColor() &&
-                     textures[i] == frameBuffer->getColor()->getID()) {
-                     frameBuffer->setColor(nullptr);
-                 }
-                 if (frameBuffer->getDepth() &&
-                     textures[i] == frameBuffer->getDepth()->getID()) {
-                     frameBuffer->setDepth(nullptr);
-                 }
-                 if (frameBuffer->getStencil() &&
-                     textures[i] == frameBuffer->getStencil()->getID()) {
-                     frameBuffer->setStencil(nullptr);
-                 }
-             }
-         }
+                if (frameBuffer->getColor() &&
+                    textures[i] == frameBuffer->getColor()->getID()) {
+                    frameBuffer->setColor(nullptr);
+                }
+                if (frameBuffer->getDepth() &&
+                    textures[i] == frameBuffer->getDepth()->getID()) {
+                    frameBuffer->setDepth(nullptr);
+                }
+                if (frameBuffer->getStencil() &&
+                    textures[i] == frameBuffer->getStencil()->getID()) {
+                    frameBuffer->setStencil(nullptr);
+                }
+            }
+        }
 
-         // then actually "delete" the buffers
-         for (int i = 0; i < n; ++i) {
-             GrTextureObj *buffer = FIND(textures[i], GrTextureObj, kTexture_ObjTypes);
-             GrAlwaysAssert(buffer);
+        // then actually "delete" the buffers
+        for (int i = 0; i < n; ++i) {
+            GrTextureObj *buffer = FIND(textures[i], GrTextureObj, kTexture_ObjTypes);
+            GrAlwaysAssert(buffer);
 
-             // OpenGL gives no guarantees if a texture is deleted while attached to
-             // something other than the currently bound frame buffer
-             GrAlwaysAssert(!buffer->getBound());
+            // OpenGL gives no guarantees if a texture is deleted while attached to
+            // something other than the currently bound frame buffer
+            GrAlwaysAssert(!buffer->getBound());
 
-             GrAlwaysAssert(!buffer->getDeleted());
-             buffer->deleteAction();
-         }
+            GrAlwaysAssert(!buffer->getDeleted());
+            buffer->deleteAction();
+        }
 
-     }
+    }
 
-     GrGLvoid deleteFramebuffers(GrGLsizei n, const GrGLuint *frameBuffers) override {
+    GrGLvoid deleteFramebuffers(GrGLsizei n, const GrGLuint *frameBuffers) override {
 
-         // first potentially unbind the buffers
-         if (this->getFrameBuffer()) {
-             for (int i = 0; i < n; ++i) {
+        // first potentially unbind the buffers
+        if (this->getFrameBuffer()) {
+            for (int i = 0; i < n; ++i) {
 
-                 if (frameBuffers[i] ==
-                     this->getFrameBuffer()->getID()) {
-                     // this ID is the current frame buffer - rebind to the default
-                     this->setFrameBuffer(nullptr);
-                 }
-             }
-         }
-
-         // then actually "delete" the buffers
-         for (int i = 0; i < n; ++i) {
-             GrFrameBufferObj *buffer = FIND(frameBuffers[i], GrFrameBufferObj,
-                                             kFrameBuffer_ObjTypes);
-             GrAlwaysAssert(buffer);
-
-             GrAlwaysAssert(!buffer->getDeleted());
-             buffer->deleteAction();
-         }
-     }
-
-     GrGLvoid deleteRenderbuffers(GrGLsizei n,const GrGLuint *renderBuffers) override {
-
-         // first potentially unbind the buffers
-         if (this->getRenderBuffer()) {
-             for (int i = 0; i < n; ++i) {
-
-                 if (renderBuffers[i] ==
-                     this->getRenderBuffer()->getID()) {
-                     // this ID is the current render buffer - make no
-                     // render buffer be bound
-                     this->setRenderBuffer(nullptr);
-                 }
-             }
-         }
-
-         // TODO: fuse the following block with DeleteTextures?
-         // Open GL will remove a deleted render buffer from the active frame
-         // buffer but not from any other frame buffer
-         if (this->getFrameBuffer()) {
-
-             GrFrameBufferObj *frameBuffer = this->getFrameBuffer();
-
-             for (int i = 0; i < n; ++i) {
-
-                 if (frameBuffer->getColor() &&
-                     renderBuffers[i] == frameBuffer->getColor()->getID()) {
-                     frameBuffer->setColor(nullptr);
-                 }
-                 if (frameBuffer->getDepth() &&
-                     renderBuffers[i] == frameBuffer->getDepth()->getID()) {
-                     frameBuffer->setDepth(nullptr);
-                 }
-                 if (frameBuffer->getStencil() &&
-                     renderBuffers[i] == frameBuffer->getStencil()->getID()) {
-                     frameBuffer->setStencil(nullptr);
-                 }
-             }
-         }
-
-         // then actually "delete" the buffers
-         for (int i = 0; i < n; ++i) {
-             GrRenderBufferObj *buffer = FIND(renderBuffers[i], GrRenderBufferObj,
-                                              kRenderBuffer_ObjTypes);
-             GrAlwaysAssert(buffer);
-
-             // OpenGL gives no guarantees if a render buffer is deleted
-             // while attached to something other than the currently
-             // bound frame buffer
-             GrAlwaysAssert(!buffer->getColorBound());
-             GrAlwaysAssert(!buffer->getDepthBound());
-             // However, at GrContext destroy time we release all GrRsources and so stencil buffers
-             // may get deleted before FBOs that refer to them.
-             //GrAlwaysAssert(!buffer->getStencilBound());
-
-             GrAlwaysAssert(!buffer->getDeleted());
-             buffer->deleteAction();
-         }
-     }
-
-     GrGLvoid framebufferRenderbuffer(GrGLenum target,
-                                      GrGLenum attachment,
-                                      GrGLenum renderbuffertarget,
-                                      GrGLuint renderBufferID) override {
-
-         GrAlwaysAssert(GR_GL_FRAMEBUFFER == target);
-         GrAlwaysAssert(GR_GL_COLOR_ATTACHMENT0 == attachment ||
-                        GR_GL_DEPTH_ATTACHMENT == attachment ||
-                        GR_GL_STENCIL_ATTACHMENT == attachment);
-         GrAlwaysAssert(GR_GL_RENDERBUFFER == renderbuffertarget);
-
-         GrFrameBufferObj *framebuffer = this->getFrameBuffer();
-         // A render buffer cannot be attached to the default framebuffer
-         GrAlwaysAssert(framebuffer);
-
-         // a renderBufferID of 0 is acceptable - it unbinds the current
-         // render buffer
-         GrRenderBufferObj *renderbuffer = FIND(renderBufferID, GrRenderBufferObj,
-                                                kRenderBuffer_ObjTypes);
-
-         switch (attachment) {
-         case GR_GL_COLOR_ATTACHMENT0:
-             framebuffer->setColor(renderbuffer);
-             break;
-         case GR_GL_DEPTH_ATTACHMENT:
-             framebuffer->setDepth(renderbuffer);
-             break;
-         case GR_GL_STENCIL_ATTACHMENT:
-             framebuffer->setStencil(renderbuffer);
-             break;
-         default:
-             GrAlwaysAssert(false);
-             break;
-         };
-
-     }
-
-     ////////////////////////////////////////////////////////////////////////////////
-     GrGLvoid framebufferTexture2D(GrGLenum target, GrGLenum attachment, GrGLenum textarget,
-                                   GrGLuint textureID, GrGLint level) override {
-
-         GrAlwaysAssert(GR_GL_FRAMEBUFFER == target);
-         GrAlwaysAssert(GR_GL_COLOR_ATTACHMENT0 == attachment ||
-                        GR_GL_DEPTH_ATTACHMENT == attachment ||
-                        GR_GL_STENCIL_ATTACHMENT == attachment);
-         GrAlwaysAssert(GR_GL_TEXTURE_2D == textarget);
-
-         GrFrameBufferObj *framebuffer = this->getFrameBuffer();
-         // A texture cannot be attached to the default framebuffer
-         GrAlwaysAssert(framebuffer);
-
-         // A textureID of 0 is allowed - it unbinds the currently bound texture
-         GrTextureObj *texture = FIND(textureID, GrTextureObj, kTexture_ObjTypes);
-         if (texture) {
-             // The texture shouldn't be bound to a texture unit - this
-             // could lead to a feedback loop
-             GrAlwaysAssert(!texture->getBound());
-         }
-
-         GrAlwaysAssert(0 == level);
-
-         switch (attachment) {
-         case GR_GL_COLOR_ATTACHMENT0:
-             framebuffer->setColor(texture);
-             break;
-         case GR_GL_DEPTH_ATTACHMENT:
-             framebuffer->setDepth(texture);
-             break;
-         case GR_GL_STENCIL_ATTACHMENT:
-             framebuffer->setStencil(texture);
-             break;
-         default:
-             GrAlwaysAssert(false);
-             break;
-         };
-     }
+                if (frameBuffers[i] ==
+                    this->getFrameBuffer()->getID()) {
+                    // this ID is the current frame buffer - rebind to the default
+                    this->setFrameBuffer(nullptr);
+                }
+            }
+        }
+
+        // then actually "delete" the buffers
+        for (int i = 0; i < n; ++i) {
+            GrFrameBufferObj *buffer = FIND(frameBuffers[i], GrFrameBufferObj,
+                                            kFrameBuffer_ObjTypes);
+            GrAlwaysAssert(buffer);
+
+            GrAlwaysAssert(!buffer->getDeleted());
+            buffer->deleteAction();
+        }
+    }
+
+    GrGLvoid deleteRenderbuffers(GrGLsizei n,const GrGLuint *renderBuffers) override {
+
+        // first potentially unbind the buffers
+        if (this->getRenderBuffer()) {
+            for (int i = 0; i < n; ++i) {
+
+                if (renderBuffers[i] ==
+                    this->getRenderBuffer()->getID()) {
+                    // this ID is the current render buffer - make no
+                    // render buffer be bound
+                    this->setRenderBuffer(nullptr);
+                }
+            }
+        }
+
+        // TODO: fuse the following block with DeleteTextures?
+        // Open GL will remove a deleted render buffer from the active frame
+        // buffer but not from any other frame buffer
+        if (this->getFrameBuffer()) {
+
+            GrFrameBufferObj *frameBuffer = this->getFrameBuffer();
+
+            for (int i = 0; i < n; ++i) {
+
+                if (frameBuffer->getColor() &&
+                    renderBuffers[i] == frameBuffer->getColor()->getID()) {
+                    frameBuffer->setColor(nullptr);
+                }
+                if (frameBuffer->getDepth() &&
+                    renderBuffers[i] == frameBuffer->getDepth()->getID()) {
+                    frameBuffer->setDepth(nullptr);
+                }
+                if (frameBuffer->getStencil() &&
+                    renderBuffers[i] == frameBuffer->getStencil()->getID()) {
+                    frameBuffer->setStencil(nullptr);
+                }
+            }
+        }
+
+        // then actually "delete" the buffers
+        for (int i = 0; i < n; ++i) {
+            GrRenderBufferObj *buffer = FIND(renderBuffers[i], GrRenderBufferObj,
+                                             kRenderBuffer_ObjTypes);
+            GrAlwaysAssert(buffer);
+
+            // OpenGL gives no guarantees if a render buffer is deleted
+            // while attached to something other than the currently
+            // bound frame buffer
+            GrAlwaysAssert(!buffer->getColorBound());
+            GrAlwaysAssert(!buffer->getDepthBound());
+            // However, at GrContext destroy time we release all GrRsources and so stencil buffers
+            // may get deleted before FBOs that refer to them.
+            //GrAlwaysAssert(!buffer->getStencilBound());
+
+            GrAlwaysAssert(!buffer->getDeleted());
+            buffer->deleteAction();
+        }
+    }
+
+    GrGLvoid framebufferRenderbuffer(GrGLenum target,
+                                     GrGLenum attachment,
+                                     GrGLenum renderbuffertarget,
+                                     GrGLuint renderBufferID) override {
+
+        GrAlwaysAssert(GR_GL_FRAMEBUFFER == target);
+        GrAlwaysAssert(GR_GL_COLOR_ATTACHMENT0 == attachment ||
+                       GR_GL_DEPTH_ATTACHMENT == attachment ||
+                       GR_GL_STENCIL_ATTACHMENT == attachment);
+        GrAlwaysAssert(GR_GL_RENDERBUFFER == renderbuffertarget);
+
+        GrFrameBufferObj *framebuffer = this->getFrameBuffer();
+        // A render buffer cannot be attached to the default framebuffer
+        GrAlwaysAssert(framebuffer);
+
+        // a renderBufferID of 0 is acceptable - it unbinds the current
+        // render buffer
+        GrRenderBufferObj *renderbuffer = FIND(renderBufferID, GrRenderBufferObj,
+                                               kRenderBuffer_ObjTypes);
+
+        switch (attachment) {
+            case GR_GL_COLOR_ATTACHMENT0:
+                framebuffer->setColor(renderbuffer);
+                break;
+            case GR_GL_DEPTH_ATTACHMENT:
+                framebuffer->setDepth(renderbuffer);
+                break;
+            case GR_GL_STENCIL_ATTACHMENT:
+                framebuffer->setStencil(renderbuffer);
+                break;
+            default:
+                GrAlwaysAssert(false);
+                break;
+        };
+
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////
+    GrGLvoid framebufferTexture2D(GrGLenum target, GrGLenum attachment, GrGLenum textarget,
+                                  GrGLuint textureID, GrGLint level) override {
+
+        GrAlwaysAssert(GR_GL_FRAMEBUFFER == target);
+        GrAlwaysAssert(GR_GL_COLOR_ATTACHMENT0 == attachment ||
+                       GR_GL_DEPTH_ATTACHMENT == attachment ||
+                       GR_GL_STENCIL_ATTACHMENT == attachment);
+        GrAlwaysAssert(GR_GL_TEXTURE_2D == textarget);
+
+        GrFrameBufferObj *framebuffer = this->getFrameBuffer();
+        // A texture cannot be attached to the default framebuffer
+        GrAlwaysAssert(framebuffer);
+
+        // A textureID of 0 is allowed - it unbinds the currently bound texture
+        GrTextureObj *texture = FIND(textureID, GrTextureObj, kTexture_ObjTypes);
+        if (texture) {
+            // The texture shouldn't be bound to a texture unit - this
+            // could lead to a feedback loop
+            GrAlwaysAssert(!texture->getBound());
+        }
+
+        GrAlwaysAssert(0 == level);
+
+        switch (attachment) {
+            case GR_GL_COLOR_ATTACHMENT0:
+                framebuffer->setColor(texture);
+                break;
+            case GR_GL_DEPTH_ATTACHMENT:
+                framebuffer->setDepth(texture);
+                break;
+            case GR_GL_STENCIL_ATTACHMENT:
+                framebuffer->setStencil(texture);
+                break;
+            default:
+                GrAlwaysAssert(false);
+                break;
+        };
+    }
 
     GrGLuint createProgram() override {
 
@@ -1230,8 +1229,28 @@ const char* DebugInterface::kExtensions[] = {
     nullptr, // signifies the end of the array.
 };
 
-}  // anonymous namespace
+class DebugGLContext : public sk_gpu_test::GLContext {
+public:
+   DebugGLContext() {
+       this->init(new DebugInterface());
+   }
 
-////////////////////////////////////////////////////////////////////////////////
+   ~DebugGLContext() override { this->teardown(); }
 
-const GrGLInterface* GrGLCreateDebugInterface() { return new DebugInterface; }
+private:
+    void onPlatformMakeCurrent() const override {}
+    void onPlatformSwapBuffers() const override {}
+    GrGLFuncPtr onPlatformGetProcAddress(const char*) const override { return nullptr; }
+};
+}  // anonymous namespace
+
+namespace sk_gpu_test {
+GLContext* CreateDebugGLContext() {
+    GLContext* ctx = new DebugGLContext();
+    if (ctx->isValid()) {
+        return ctx;
+    }
+    delete ctx;
+    return nullptr;
+}
+}