The Tor Browser: gfx/skia/trunk/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp@6474c204b198 (annotated)

gfx/skia/trunk/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp@6474c204b198 (annotated)

gfx/skia/trunk/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gl/GrGLInterface.h"
 #include "GrDebugGL.h"
 #include "GrShaderObj.h"
 #include "GrProgramObj.h"
 #include "GrBufferObj.h"
 #include "GrTextureUnitObj.h"
 #include "GrTextureObj.h"
 #include "GrFrameBufferObj.h"
 #include "GrRenderBufferObj.h"
 #include "GrVertexArrayObj.h"
 #include "SkFloatingPoint.h"
 #include "../GrGLNoOpInterface.h"
 namespace { // suppress no previous prototype warning
 ////////////////////////////////////////////////////////////////////////////////
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLActiveTexture(GrGLenum texture) {
     // Ganesh offsets the texture unit indices
     texture -= GR_GL_TEXTURE0;
     GrAlwaysAssert(texture < GrDebugGL::getInstance()->getMaxTextureUnits());
     GrDebugGL::getInstance()->setCurTextureUnit(texture);
 }
 ////////////////////////////////////////////////////////////////////////////////
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLAttachShader(GrGLuint programID,
                                                  GrGLuint shaderID) {
     GrProgramObj *program = GR_FIND(programID, GrProgramObj,
                                     GrDebugGL::kProgram_ObjTypes);
     GrAlwaysAssert(program);
     GrShaderObj *shader = GR_FIND(shaderID,
                                   GrShaderObj,
                                   GrDebugGL::kShader_ObjTypes);
     GrAlwaysAssert(shader);
     program->AttachShader(shader);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLBeginQuery(GrGLenum target, GrGLuint id) {
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLBindAttribLocation(GrGLuint program,
                                                        GrGLuint index,
                                                        const char* name) {
 }
 ////////////////////////////////////////////////////////////////////////////////
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLBindTexture(GrGLenum target,
                                                 GrGLuint textureID) {
     // we don't use cube maps
     GrAlwaysAssert(target == GR_GL_TEXTURE_2D);
                                     // || target == GR_GL_TEXTURE_CUBE_MAP);
     // a textureID of 0 is acceptable - it binds to the default texture target
     GrTextureObj *texture = GR_FIND(textureID, GrTextureObj,
                                     GrDebugGL::kTexture_ObjTypes);
     GrDebugGL::getInstance()->setTexture(texture);
 }
 ////////////////////////////////////////////////////////////////////////////////
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLBufferData(GrGLenum target,
                                                GrGLsizeiptr size,
                                                const GrGLvoid* data,
                                                GrGLenum usage) {
     GrAlwaysAssert(GR_GL_ARRAY_BUFFER == target ||
                    GR_GL_ELEMENT_ARRAY_BUFFER == target);
     GrAlwaysAssert(size >= 0);
     GrAlwaysAssert(GR_GL_STREAM_DRAW == usage ||
                    GR_GL_STATIC_DRAW == usage ||
                    GR_GL_DYNAMIC_DRAW == usage);
     GrBufferObj *buffer = NULL;
     switch (target) {
         case GR_GL_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getArrayBuffer();
             break;
         case GR_GL_ELEMENT_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getElementArrayBuffer();
             break;
         default:
             GrCrash("Unexpected target to glBufferData");
             break;
     }
     GrAlwaysAssert(buffer);
     GrAlwaysAssert(buffer->getBound());
     buffer->allocate(size, reinterpret_cast<const GrGLchar *>(data));
     buffer->setUsage(usage);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLPixelStorei(GrGLenum pname,
                                                 GrGLint param) {
     switch (pname) {
         case GR_GL_UNPACK_ROW_LENGTH:
             GrDebugGL::getInstance()->setUnPackRowLength(param);
             break;
         case GR_GL_PACK_ROW_LENGTH:
             GrDebugGL::getInstance()->setPackRowLength(param);
             break;
         case GR_GL_UNPACK_ALIGNMENT:
             break;
         case GR_GL_PACK_ALIGNMENT:
             GrAlwaysAssert(false);
             break;
         default:
             GrAlwaysAssert(false);
             break;
     }
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLReadPixels(GrGLint x,
                                                GrGLint y,
                                                GrGLsizei width,
                                                GrGLsizei height,
                                                GrGLenum format,
                                                GrGLenum type,
                                                GrGLvoid* pixels) {
     GrGLint pixelsInRow = width;
     if (0 < GrDebugGL::getInstance()->getPackRowLength()) {
         pixelsInRow = GrDebugGL::getInstance()->getPackRowLength();
     }
     GrGLint componentsPerPixel = 0;
     switch (format) {
         case GR_GL_RGBA:
             // fallthrough
         case GR_GL_BGRA:
             componentsPerPixel = 4;
             break;
         case GR_GL_RGB:
             componentsPerPixel = 3;
             break;
         case GR_GL_RED:
             componentsPerPixel = 1;
             break;
         default:
             GrAlwaysAssert(false);
             break;
     }
     GrGLint alignment = 4;  // the pack alignment (one of 1, 2, 4 or 8)
     // Ganesh currently doesn't support setting GR_GL_PACK_ALIGNMENT
     GrGLint componentSize = 0;  // size (in bytes) of a single component
     switch (type) {
         case GR_GL_UNSIGNED_BYTE:
             componentSize = 1;
             break;
         default:
             GrAlwaysAssert(false);
             break;
     }
     GrGLint rowStride = 0;  // number of components (not bytes) to skip
     if (componentSize >= alignment) {
         rowStride = componentsPerPixel * pixelsInRow;
     } else {
         float fTemp =
             sk_float_ceil(componentSize * componentsPerPixel * pixelsInRow /
                           static_cast<float>(alignment));
         rowStride = static_cast<GrGLint>(alignment * fTemp / componentSize);
     }
     GrGLchar *scanline = static_cast<GrGLchar *>(pixels);
     for (int y = 0; y < height; ++y) {
         memset(scanline, 0, componentsPerPixel * componentSize * width);
         scanline += rowStride;
     }
 }
  GrGLvoid GR_GL_FUNCTION_TYPE debugGLUseProgram(GrGLuint programID) {
      // A programID of 0 is legal
      GrProgramObj *program = GR_FIND(programID,
                                      GrProgramObj,
                                      GrDebugGL::kProgram_ObjTypes);
      GrDebugGL::getInstance()->useProgram(program);
  }
  GrGLvoid GR_GL_FUNCTION_TYPE debugGLBindFramebuffer(GrGLenum target,
                                                      GrGLuint frameBufferID) {
      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 = GR_FIND(frameBufferID,
                                              GrFrameBufferObj,
                                              GrDebugGL::kFrameBuffer_ObjTypes);
      GrDebugGL::getInstance()->setFrameBuffer(frameBuffer);
  }
  GrGLvoid GR_GL_FUNCTION_TYPE debugGLBindRenderbuffer(GrGLenum target, GrGLuint renderBufferID) {
      GrAlwaysAssert(GR_GL_RENDERBUFFER == target);
      // a renderBufferID of 0 is acceptable - it unbinds the bound render buffer
      GrRenderBufferObj *renderBuffer = GR_FIND(renderBufferID,
                                                GrRenderBufferObj,
                                                GrDebugGL::kRenderBuffer_ObjTypes);
      GrDebugGL::getInstance()->setRenderBuffer(renderBuffer);
  }
  GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteTextures(GrGLsizei n, const GrGLuint* textures) {
      // first potentially unbind the texture
      // TODO: move this into GrDebugGL as unBindTexture?
      for (unsigned int i = 0;
           i < GrDebugGL::getInstance()->getMaxTextureUnits();
           ++i) {
          GrTextureUnitObj *pTU = GrDebugGL::getInstance()->getTextureUnit(i);
          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(NULL);
                  }
              }
          }
      }
      // 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 (GrDebugGL::getInstance()->getFrameBuffer()) {
          GrFrameBufferObj *frameBuffer = GrDebugGL::getInstance()->getFrameBuffer();
          for (int i = 0; i < n; ++i) {
              if (NULL != frameBuffer->getColor() &&
                  textures[i] == frameBuffer->getColor()->getID()) {
                  frameBuffer->setColor(NULL);
              }
              if (NULL != frameBuffer->getDepth() &&
                  textures[i] == frameBuffer->getDepth()->getID()) {
                  frameBuffer->setDepth(NULL);
              }
              if (NULL != frameBuffer->getStencil() &&
                  textures[i] == frameBuffer->getStencil()->getID()) {
                  frameBuffer->setStencil(NULL);
              }
          }
      }
      // then actually "delete" the buffers
      for (int i = 0; i < n; ++i) {
          GrTextureObj *buffer = GR_FIND(textures[i],
                                         GrTextureObj,
                                         GrDebugGL::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());
          GrAlwaysAssert(!buffer->getDeleted());
          buffer->deleteAction();
      }
  }
  GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteFramebuffers(GrGLsizei n,
                                                         const GrGLuint *frameBuffers) {
      // first potentially unbind the buffers
      if (GrDebugGL::getInstance()->getFrameBuffer()) {
          for (int i = 0; i < n; ++i) {
              if (frameBuffers[i] ==
                  GrDebugGL::getInstance()->getFrameBuffer()->getID()) {
                  // this ID is the current frame buffer - rebind to the default
                  GrDebugGL::getInstance()->setFrameBuffer(NULL);
              }
          }
      }
      // then actually "delete" the buffers
      for (int i = 0; i < n; ++i) {
          GrFrameBufferObj *buffer = GR_FIND(frameBuffers[i],
                                             GrFrameBufferObj,
                                             GrDebugGL::kFrameBuffer_ObjTypes);
          GrAlwaysAssert(buffer);
          GrAlwaysAssert(!buffer->getDeleted());
          buffer->deleteAction();
      }
  }
  GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteRenderbuffers(GrGLsizei n,
                                                          const GrGLuint *renderBuffers) {
      // first potentially unbind the buffers
      if (GrDebugGL::getInstance()->getRenderBuffer()) {
          for (int i = 0; i < n; ++i) {
              if (renderBuffers[i] ==
                  GrDebugGL::getInstance()->getRenderBuffer()->getID()) {
                  // this ID is the current render buffer - make no
                  // render buffer be bound
                  GrDebugGL::getInstance()->setRenderBuffer(NULL);
              }
          }
      }
      // 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 (GrDebugGL::getInstance()->getFrameBuffer()) {
          GrFrameBufferObj *frameBuffer =
                                GrDebugGL::getInstance()->getFrameBuffer();
          for (int i = 0; i < n; ++i) {
              if (NULL != frameBuffer->getColor() &&
                  renderBuffers[i] == frameBuffer->getColor()->getID()) {
                  frameBuffer->setColor(NULL);
              }
              if (NULL != frameBuffer->getDepth() &&
                  renderBuffers[i] == frameBuffer->getDepth()->getID()) {
                  frameBuffer->setDepth(NULL);
              }
              if (NULL != frameBuffer->getStencil() &&
                  renderBuffers[i] == frameBuffer->getStencil()->getID()) {
                  frameBuffer->setStencil(NULL);
              }
          }
      }
      // then actually "delete" the buffers
      for (int i = 0; i < n; ++i) {
          GrRenderBufferObj *buffer = GR_FIND(renderBuffers[i],
                                              GrRenderBufferObj,
                                              GrDebugGL::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 GR_GL_FUNCTION_TYPE debugGLFramebufferRenderbuffer(GrGLenum target,
                                                              GrGLenum attachment,
                                                              GrGLenum renderbuffertarget,
                                                              GrGLuint renderBufferID) {
      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 = GrDebugGL::getInstance()->getFrameBuffer();
      // A render buffer cannot be attached to the default framebuffer
      GrAlwaysAssert(NULL != framebuffer);
      // a renderBufferID of 0 is acceptable - it unbinds the current
      // render buffer
      GrRenderBufferObj *renderbuffer = GR_FIND(renderBufferID,
                                                GrRenderBufferObj,
                                                GrDebugGL::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 GR_GL_FUNCTION_TYPE debugGLFramebufferTexture2D(GrGLenum target,
                                                           GrGLenum attachment,
                                                           GrGLenum textarget,
                                                           GrGLuint textureID,
                                                           GrGLint level) {
      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 = GrDebugGL::getInstance()->getFrameBuffer();
      // A texture cannot be attached to the default framebuffer
      GrAlwaysAssert(NULL != framebuffer);
      // A textureID of 0 is allowed - it unbinds the currently bound texture
      GrTextureObj *texture = GR_FIND(textureID, GrTextureObj,
                                      GrDebugGL::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 GR_GL_FUNCTION_TYPE debugGLCreateProgram() {
     GrProgramObj *program = GR_CREATE(GrProgramObj,
                                       GrDebugGL::kProgram_ObjTypes);
     return program->getID();
 }
 GrGLuint GR_GL_FUNCTION_TYPE debugGLCreateShader(GrGLenum type) {
     GrAlwaysAssert(GR_GL_VERTEX_SHADER == type ||
                    GR_GL_FRAGMENT_SHADER == type);
     GrShaderObj *shader = GR_CREATE(GrShaderObj, GrDebugGL::kShader_ObjTypes);
     shader->setType(type);
     return shader->getID();
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteProgram(GrGLuint programID) {
     GrProgramObj *program = GR_FIND(programID,
                                     GrProgramObj,
                                     GrDebugGL::kProgram_ObjTypes);
     GrAlwaysAssert(program);
     if (program->getRefCount()) {
         // someone is still using this program so we can't delete it here
         program->setMarkedForDeletion();
     } else {
         program->deleteAction();
     }
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteShader(GrGLuint shaderID) {
     GrShaderObj *shader = GR_FIND(shaderID,
                                   GrShaderObj,
                                   GrDebugGL::kShader_ObjTypes);
     GrAlwaysAssert(shader);
     if (shader->getRefCount()) {
         // someone is still using this shader so we can't delete it here
         shader->setMarkedForDeletion();
     } else {
         shader->deleteAction();
     }
 }
 GrGLvoid debugGenObjs(GrDebugGL::GrObjTypes type,
                       GrGLsizei n,
                       GrGLuint* ids) {
    for (int i = 0; i < n; ++i) {
         GrFakeRefObj *obj = GrDebugGL::getInstance()->createObj(type);
         GrAlwaysAssert(obj);
         ids[i] = obj->getID();
     }
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGenBuffers(GrGLsizei n, GrGLuint* ids) {
     debugGenObjs(GrDebugGL::kBuffer_ObjTypes, n, ids);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGenerateMipmap(GrGLenum level) {
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGenFramebuffers(GrGLsizei n,
                                                     GrGLuint* ids) {
     debugGenObjs(GrDebugGL::kFrameBuffer_ObjTypes, n, ids);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGenRenderbuffers(GrGLsizei n,
                                                      GrGLuint* ids) {
     debugGenObjs(GrDebugGL::kRenderBuffer_ObjTypes, n, ids);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGenTextures(GrGLsizei n, GrGLuint* ids) {
     debugGenObjs(GrDebugGL::kTexture_ObjTypes, n, ids);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGenVertexArrays(GrGLsizei n, GrGLuint* ids) {
     debugGenObjs(GrDebugGL::kVertexArray_ObjTypes, n, ids);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteVertexArrays(GrGLsizei n, const GrGLuint* ids) {
     for (GrGLsizei i = 0; i < n; ++i) {
         GrVertexArrayObj* array =
             GR_FIND(ids[i], GrVertexArrayObj, GrDebugGL::kVertexArray_ObjTypes);
         GrAlwaysAssert(array);
         // Deleting the current vertex array binds object 0
         if (GrDebugGL::getInstance()->getVertexArray() == array) {
             GrDebugGL::getInstance()->setVertexArray(NULL);
         }
         if (array->getRefCount()) {
             // someone is still using this vertex array so we can't delete it here
             array->setMarkedForDeletion();
         } else {
             array->deleteAction();
         }
     }
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLBindVertexArray(GrGLuint id) {
     GrVertexArrayObj* array = GR_FIND(id, GrVertexArrayObj, GrDebugGL::kVertexArray_ObjTypes);
     GrAlwaysAssert((0 == id) || NULL != array);
     GrDebugGL::getInstance()->setVertexArray(array);
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLBindBuffer(GrGLenum target, GrGLuint bufferID) {
     GrAlwaysAssert(GR_GL_ARRAY_BUFFER == target || GR_GL_ELEMENT_ARRAY_BUFFER == target);
     GrBufferObj *buffer = GR_FIND(bufferID,
                                   GrBufferObj,
                                   GrDebugGL::kBuffer_ObjTypes);
     // 0 is a permissible bufferID - it unbinds the current buffer
     switch (target) {
         case GR_GL_ARRAY_BUFFER:
             GrDebugGL::getInstance()->setArrayBuffer(buffer);
             break;
         case GR_GL_ELEMENT_ARRAY_BUFFER:
             GrDebugGL::getInstance()->setElementArrayBuffer(buffer);
             break;
         default:
             GrCrash("Unexpected target to glBindBuffer");
             break;
     }
 }
 // deleting a bound buffer has the side effect of binding 0
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLDeleteBuffers(GrGLsizei n, const GrGLuint* ids) {
     // first potentially unbind the buffers
     for (int i = 0; i < n; ++i) {
         if (GrDebugGL::getInstance()->getArrayBuffer() &&
             ids[i] == GrDebugGL::getInstance()->getArrayBuffer()->getID()) {
             // this ID is the current array buffer
             GrDebugGL::getInstance()->setArrayBuffer(NULL);
         }
         if (GrDebugGL::getInstance()->getElementArrayBuffer() &&
             ids[i] ==
                 GrDebugGL::getInstance()->getElementArrayBuffer()->getID()) {
             // this ID is the current element array buffer
             GrDebugGL::getInstance()->setElementArrayBuffer(NULL);
         }
     }
     // then actually "delete" the buffers
     for (int i = 0; i < n; ++i) {
         GrBufferObj *buffer = GR_FIND(ids[i],
                                       GrBufferObj,
                                       GrDebugGL::kBuffer_ObjTypes);
         GrAlwaysAssert(buffer);
         GrAlwaysAssert(!buffer->getDeleted());
         buffer->deleteAction();
     }
 }
 // map a buffer to the caller's address space
 GrGLvoid* GR_GL_FUNCTION_TYPE debugGLMapBuffer(GrGLenum target, GrGLenum access) {
     GrAlwaysAssert(GR_GL_ARRAY_BUFFER == target ||
                    GR_GL_ELEMENT_ARRAY_BUFFER == target);
     // GR_GL_READ_ONLY == access ||  || GR_GL_READ_WRIT == access);
     GrAlwaysAssert(GR_GL_WRITE_ONLY == access);
     GrBufferObj *buffer = NULL;
     switch (target) {
         case GR_GL_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getArrayBuffer();
             break;
         case GR_GL_ELEMENT_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getElementArrayBuffer();
             break;
         default:
             GrCrash("Unexpected target to glMapBuffer");
             break;
     }
     if (buffer) {
         GrAlwaysAssert(!buffer->getMapped());
         buffer->setMapped();
         return buffer->getDataPtr();
     }
     GrAlwaysAssert(false);
     return NULL;        // no buffer bound to the target
 }
 // remove a buffer from the caller's address space
 // TODO: check if the "access" method from "glMapBuffer" was honored
 GrGLboolean GR_GL_FUNCTION_TYPE debugGLUnmapBuffer(GrGLenum target) {
     GrAlwaysAssert(GR_GL_ARRAY_BUFFER == target ||
                    GR_GL_ELEMENT_ARRAY_BUFFER == target);
     GrBufferObj *buffer = NULL;
     switch (target) {
         case GR_GL_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getArrayBuffer();
             break;
         case GR_GL_ELEMENT_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getElementArrayBuffer();
             break;
         default:
             GrCrash("Unexpected target to glUnmapBuffer");
             break;
     }
     if (buffer) {
         GrAlwaysAssert(buffer->getMapped());
         buffer->resetMapped();
         return GR_GL_TRUE;
     }
     GrAlwaysAssert(false);
     return GR_GL_FALSE; // GR_GL_INVALID_OPERATION;
 }
 GrGLvoid GR_GL_FUNCTION_TYPE debugGLGetBufferParameteriv(GrGLenum target,
                                                          GrGLenum value,
                                                          GrGLint* params) {
     GrAlwaysAssert(GR_GL_ARRAY_BUFFER == target ||
                    GR_GL_ELEMENT_ARRAY_BUFFER == target);
     GrAlwaysAssert(GR_GL_BUFFER_SIZE == value ||
                    GR_GL_BUFFER_USAGE == value);
     GrBufferObj *buffer = NULL;
     switch (target) {
         case GR_GL_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getArrayBuffer();
             break;
         case GR_GL_ELEMENT_ARRAY_BUFFER:
             buffer = GrDebugGL::getInstance()->getElementArrayBuffer();
             break;
     }
     GrAlwaysAssert(buffer);
     switch (value) {
         case GR_GL_BUFFER_MAPPED:
             *params = GR_GL_FALSE;
             if (buffer)
                 *params = buffer->getMapped() ? GR_GL_TRUE : GR_GL_FALSE;
             break;
         case GR_GL_BUFFER_SIZE:
             *params = 0;
             if (buffer)
                 *params = buffer->getSize();
             break;
         case GR_GL_BUFFER_USAGE:
             *params = GR_GL_STATIC_DRAW;
             if (buffer)
                 *params = buffer->getUsage();
             break;
         default:
             GrCrash("Unexpected value to glGetBufferParamateriv");
             break;
     }
 };
 } // end of namespace
 ////////////////////////////////////////////////////////////////////////////////
 struct GrDebugGLInterface : public GrGLInterface {
 public:
     SK_DECLARE_INST_COUNT(GrDebugGLInterface)
     GrDebugGLInterface()
         : fWrapped(NULL) {
         GrDebugGL::staticRef();
     }
     virtual ~GrDebugGLInterface() {
         GrDebugGL::staticUnRef();
     }
     void setWrapped(GrGLInterface *interface) {
         fWrapped.reset(interface);
     }
     // TODO: there are some issues w/ wrapping another GL interface inside the
     // debug interface:
     //      Since none of the "gl" methods are member functions they don't get
     //      a "this" pointer through which to access "fWrapped"
     //      This could be worked around by having all of them access the
     //      "glInterface" pointer - i.e., treating the debug interface as a
     //      true singleton
     //
     //      The problem with this is that we also want to handle OpenGL
     //      contexts. The natural way to do this is to have multiple debug
     //      interfaces. Each of which represents a separate context. The
     //      static ID count would still uniquify IDs across all of them.
     //      The problem then is that we couldn't treat the debug GL
     //      interface as a singleton (since there would be one for each
     //      context).
     //
     //      The solution to this is probably to alter SkDebugGlContext's
     //      "makeCurrent" method to make a call like "makeCurrent(this)" to
     //      the debug GL interface (assuming that the application will create
     //      multiple SkGLContextHelper's) to let it switch between the active
     //      context. Everything in the GrDebugGL object would then need to be
     //      moved to a GrContextObj and the GrDebugGL object would just switch
     //      between them. Note that this approach would also require that
     //      SkDebugGLContext wrap an arbitrary other context
     //      and then pass the wrapped interface to the debug GL interface.
 protected:
 private:
     SkAutoTUnref<GrGLInterface> fWrapped;
     typedef GrGLInterface INHERITED;
 };
 ////////////////////////////////////////////////////////////////////////////////
 const GrGLInterface* GrGLCreateDebugInterface() {
     GrGLInterface* interface = SkNEW(GrDebugGLInterface);
     interface->fStandard = kGL_GrGLStandard;
     GrGLInterface::Functions* functions = &interface->fFunctions;
     functions->fActiveTexture = debugGLActiveTexture;
     functions->fAttachShader = debugGLAttachShader;
     functions->fBeginQuery = debugGLBeginQuery;
     functions->fBindAttribLocation = debugGLBindAttribLocation;
     functions->fBindBuffer = debugGLBindBuffer;
     functions->fBindFragDataLocation = noOpGLBindFragDataLocation;
     functions->fBindTexture = debugGLBindTexture;
     functions->fBindVertexArray = debugGLBindVertexArray;
     functions->fBlendColor = noOpGLBlendColor;
     functions->fBlendFunc = noOpGLBlendFunc;
     functions->fBufferData = debugGLBufferData;
     functions->fBufferSubData = noOpGLBufferSubData;
     functions->fClear = noOpGLClear;
     functions->fClearColor = noOpGLClearColor;
     functions->fClearStencil = noOpGLClearStencil;
     functions->fColorMask = noOpGLColorMask;
     functions->fCompileShader = noOpGLCompileShader;
     functions->fCompressedTexImage2D = noOpGLCompressedTexImage2D;
     functions->fCopyTexSubImage2D = noOpGLCopyTexSubImage2D;
     functions->fCreateProgram = debugGLCreateProgram;
     functions->fCreateShader = debugGLCreateShader;
     functions->fCullFace = noOpGLCullFace;
     functions->fDeleteBuffers = debugGLDeleteBuffers;
     functions->fDeleteProgram = debugGLDeleteProgram;
     functions->fDeleteQueries = noOpGLDeleteIds;
     functions->fDeleteShader = debugGLDeleteShader;
     functions->fDeleteTextures = debugGLDeleteTextures;
     functions->fDeleteVertexArrays = debugGLDeleteVertexArrays;
     functions->fDepthMask = noOpGLDepthMask;
     functions->fDisable = noOpGLDisable;
     functions->fDisableVertexAttribArray = noOpGLDisableVertexAttribArray;
     functions->fDrawArrays = noOpGLDrawArrays;
     functions->fDrawBuffer = noOpGLDrawBuffer;
     functions->fDrawBuffers = noOpGLDrawBuffers;
     functions->fDrawElements = noOpGLDrawElements;
     functions->fEnable = noOpGLEnable;
     functions->fEnableVertexAttribArray = noOpGLEnableVertexAttribArray;
     functions->fEndQuery = noOpGLEndQuery;
     functions->fFinish = noOpGLFinish;
     functions->fFlush = noOpGLFlush;
     functions->fFrontFace = noOpGLFrontFace;
     functions->fGenerateMipmap = debugGLGenerateMipmap;
     functions->fGenBuffers = debugGLGenBuffers;
     functions->fGenQueries = noOpGLGenIds;
     functions->fGenTextures = debugGLGenTextures;
     functions->fGetBufferParameteriv = debugGLGetBufferParameteriv;
     functions->fGetError = noOpGLGetError;
     functions->fGetIntegerv = noOpGLGetIntegerv;
     functions->fGetQueryObjecti64v = noOpGLGetQueryObjecti64v;
     functions->fGetQueryObjectiv = noOpGLGetQueryObjectiv;
     functions->fGetQueryObjectui64v = noOpGLGetQueryObjectui64v;
     functions->fGetQueryObjectuiv = noOpGLGetQueryObjectuiv;
     functions->fGetQueryiv = noOpGLGetQueryiv;
     functions->fGetProgramInfoLog = noOpGLGetInfoLog;
     functions->fGetProgramiv = noOpGLGetShaderOrProgramiv;
     functions->fGetShaderInfoLog = noOpGLGetInfoLog;
     functions->fGetShaderiv = noOpGLGetShaderOrProgramiv;
     functions->fGetString = noOpGLGetString;
     functions->fGetStringi = noOpGLGetStringi;
     functions->fGetTexLevelParameteriv = noOpGLGetTexLevelParameteriv;
     functions->fGetUniformLocation = noOpGLGetUniformLocation;
     functions->fGenVertexArrays = debugGLGenVertexArrays;
     functions->fLoadIdentity = noOpGLLoadIdentity;
     functions->fLoadMatrixf = noOpGLLoadMatrixf;
     functions->fLineWidth = noOpGLLineWidth;
     functions->fLinkProgram = noOpGLLinkProgram;
     functions->fMatrixMode = noOpGLMatrixMode;
     functions->fPixelStorei = debugGLPixelStorei;
     functions->fQueryCounter = noOpGLQueryCounter;
     functions->fReadBuffer = noOpGLReadBuffer;
     functions->fReadPixels = debugGLReadPixels;
     functions->fScissor = noOpGLScissor;
     functions->fShaderSource = noOpGLShaderSource;
     functions->fStencilFunc = noOpGLStencilFunc;
     functions->fStencilFuncSeparate = noOpGLStencilFuncSeparate;
     functions->fStencilMask = noOpGLStencilMask;
     functions->fStencilMaskSeparate = noOpGLStencilMaskSeparate;
     functions->fStencilOp = noOpGLStencilOp;
     functions->fStencilOpSeparate = noOpGLStencilOpSeparate;
     functions->fTexGenfv = noOpGLTexGenfv;
     functions->fTexGeni = noOpGLTexGeni;
     functions->fTexImage2D = noOpGLTexImage2D;
     functions->fTexParameteri = noOpGLTexParameteri;
     functions->fTexParameteriv = noOpGLTexParameteriv;
     functions->fTexSubImage2D = noOpGLTexSubImage2D;
     functions->fTexStorage2D = noOpGLTexStorage2D;
     functions->fDiscardFramebuffer = noOpGLDiscardFramebuffer;
     functions->fUniform1f = noOpGLUniform1f;
     functions->fUniform1i = noOpGLUniform1i;
     functions->fUniform1fv = noOpGLUniform1fv;
     functions->fUniform1iv = noOpGLUniform1iv;
     functions->fUniform2f = noOpGLUniform2f;
     functions->fUniform2i = noOpGLUniform2i;
     functions->fUniform2fv = noOpGLUniform2fv;
     functions->fUniform2iv = noOpGLUniform2iv;
     functions->fUniform3f = noOpGLUniform3f;
     functions->fUniform3i = noOpGLUniform3i;
     functions->fUniform3fv = noOpGLUniform3fv;
     functions->fUniform3iv = noOpGLUniform3iv;
     functions->fUniform4f = noOpGLUniform4f;
     functions->fUniform4i = noOpGLUniform4i;
     functions->fUniform4fv = noOpGLUniform4fv;
     functions->fUniform4iv = noOpGLUniform4iv;
     functions->fUniformMatrix2fv = noOpGLUniformMatrix2fv;
     functions->fUniformMatrix3fv = noOpGLUniformMatrix3fv;
     functions->fUniformMatrix4fv = noOpGLUniformMatrix4fv;
     functions->fUseProgram = debugGLUseProgram;
     functions->fVertexAttrib4fv = noOpGLVertexAttrib4fv;
     functions->fVertexAttribPointer = noOpGLVertexAttribPointer;
     functions->fViewport = noOpGLViewport;
     functions->fBindFramebuffer = debugGLBindFramebuffer;
     functions->fBindRenderbuffer = debugGLBindRenderbuffer;
     functions->fCheckFramebufferStatus = noOpGLCheckFramebufferStatus;
     functions->fDeleteFramebuffers = debugGLDeleteFramebuffers;
     functions->fDeleteRenderbuffers = debugGLDeleteRenderbuffers;
     functions->fFramebufferRenderbuffer = debugGLFramebufferRenderbuffer;
     functions->fFramebufferTexture2D = debugGLFramebufferTexture2D;
     functions->fGenFramebuffers = debugGLGenFramebuffers;
     functions->fGenRenderbuffers = debugGLGenRenderbuffers;
     functions->fGetFramebufferAttachmentParameteriv =
                                     noOpGLGetFramebufferAttachmentParameteriv;
     functions->fGetRenderbufferParameteriv = noOpGLGetRenderbufferParameteriv;
     functions->fRenderbufferStorage = noOpGLRenderbufferStorage;
     functions->fRenderbufferStorageMultisample =
                                     noOpGLRenderbufferStorageMultisample;
     functions->fBlitFramebuffer = noOpGLBlitFramebuffer;
     functions->fResolveMultisampleFramebuffer =
                                     noOpGLResolveMultisampleFramebuffer;
     functions->fMapBuffer = debugGLMapBuffer;
     functions->fUnmapBuffer = debugGLUnmapBuffer;
     functions->fBindFragDataLocationIndexed =
                                     noOpGLBindFragDataLocationIndexed;
     interface->fExtensions.init(kGL_GrGLStandard, functions->fGetString, functions->fGetStringi,
                                 functions->fGetIntegerv);
     return interface;
 }

The Tor Browser / annotate

gfx/skia/trunk/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp@6474c204b198 (annotated)

gfx/skia/trunk/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp