src/gpu/config/gpu_info_collector.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/config/gpu_info_collector.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/debug/trace_event.h"
  11 #include "base/logging.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/strings/string_piece.h"
  15 #include "base/strings/string_split.h"
  16 #include "ui/gl/gl_bindings.h"
  17 #include "ui/gl/gl_context.h"
  18 #include "ui/gl/gl_implementation.h"
  19 #include "ui/gl/gl_surface.h"
  20
  21 namespace {
  22
  23 scoped_refptr<gfx::GLSurface> InitializeGLSurface() {
  24   scoped_refptr<gfx::GLSurface> surface(
  25       gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1)));
  26   if (!surface.get()) {
  27     LOG(ERROR) << "gfx::GLContext::CreateOffscreenGLSurface failed";
  28     return NULL;
  29   }
  30
  31   return surface;
  32 }
  33
  34 scoped_refptr<gfx::GLContext> InitializeGLContext(gfx::GLSurface* surface) {
  35
  36   scoped_refptr<gfx::GLContext> context(
  37       gfx::GLContext::CreateGLContext(NULL,
  38                                       surface,
  39                                       gfx::PreferIntegratedGpu));
  40   if (!context.get()) {
  41     LOG(ERROR) << "gfx::GLContext::CreateGLContext failed";
  42     return NULL;
  43   }
  44
  45   if (!context->MakeCurrent(surface)) {
  46     LOG(ERROR) << "gfx::GLContext::MakeCurrent() failed";
  47     return NULL;
  48   }
  49
  50   return context;
  51 }
  52
  53 std::string GetGLString(unsigned int pname) {
  54   const char* gl_string =
  55       reinterpret_cast<const char*>(glGetString(pname));
  56   if (gl_string)
  57     return std::string(gl_string);
  58   return std::string();
  59 }
  60
  61 // Return a version string in the format of "major.minor".
  62 std::string GetVersionFromString(const std::string& version_string) {
  63   size_t begin = version_string.find_first_of("0123456789");
  64   if (begin != std::string::npos) {
  65     size_t end = version_string.find_first_not_of("01234567890.", begin);
  66     std::string sub_string;
  67     if (end != std::string::npos)
  68       sub_string = version_string.substr(begin, end - begin);
  69     else
  70       sub_string = version_string.substr(begin);
  71     std::vector<std::string> pieces;
  72     base::SplitString(sub_string, '.', &pieces);
  73     if (pieces.size() >= 2)
  74       return pieces[0] + "." + pieces[1];
  75   }
  76   return std::string();
  77 }
  78
  79 }  // namespace anonymous
  80
  81 namespace gpu {
  82
  83 CollectInfoResult CollectGraphicsInfoGL(GPUInfo* gpu_info) {
  84   TRACE_EVENT0("startup", "gpu_info_collector::CollectGraphicsInfoGL");
  85   DCHECK_NE(gfx::GetGLImplementation(), gfx::kGLImplementationNone);
  86
  87   scoped_refptr<gfx::GLSurface> surface(InitializeGLSurface());
  88   if (!surface.get()) {
  89     LOG(ERROR) << "Could not create surface for info collection.";
  90     return kCollectInfoFatalFailure;
  91   }
  92
  93   scoped_refptr<gfx::GLContext> context(InitializeGLContext(surface.get()));
  94   if (!context.get()) {
  95     LOG(ERROR) << "Could not create context for info collection.";
  96     return kCollectInfoFatalFailure;
  97   }
  98
  99   gpu_info->gl_renderer = GetGLString(GL_RENDERER);
 100   gpu_info->gl_vendor = GetGLString(GL_VENDOR);
 101   gpu_info->gl_extensions = GetGLString(GL_EXTENSIONS);
 102   gpu_info->gl_version = GetGLString(GL_VERSION);
 103   std::string glsl_version_string = GetGLString(GL_SHADING_LANGUAGE_VERSION);
 104
 105   gfx::GLWindowSystemBindingInfo window_system_binding_info;
 106   if (GetGLWindowSystemBindingInfo(&window_system_binding_info)) {
 107     gpu_info->gl_ws_vendor = window_system_binding_info.vendor;
 108     gpu_info->gl_ws_version = window_system_binding_info.version;
 109     gpu_info->gl_ws_extensions = window_system_binding_info.extensions;
 110     gpu_info->direct_rendering = window_system_binding_info.direct_rendering;
 111   }
 112
 113   bool supports_robustness =
 114       gpu_info->gl_extensions.find("GL_EXT_robustness") != std::string::npos ||
 115       gpu_info->gl_extensions.find("GL_ARB_robustness") != std::string::npos;
 116   if (supports_robustness) {
 117     glGetIntegerv(GL_RESET_NOTIFICATION_STRATEGY_ARB,
 118         reinterpret_cast<GLint*>(&gpu_info->gl_reset_notification_strategy));
 119   }
 120
 121   // TODO(kbr): remove once the destruction of a current context automatically
 122   // clears the current context.
 123   context->ReleaseCurrent(surface.get());
 124
 125   std::string glsl_version = GetVersionFromString(glsl_version_string);
 126   gpu_info->pixel_shader_version = glsl_version;
 127   gpu_info->vertex_shader_version = glsl_version;
 128
 129   return CollectDriverInfoGL(gpu_info);
 130 }
 131
 132 void MergeGPUInfoGL(GPUInfo* basic_gpu_info,
 133                     const GPUInfo& context_gpu_info) {
 134   DCHECK(basic_gpu_info);
 135   basic_gpu_info->gl_renderer = context_gpu_info.gl_renderer;
 136   basic_gpu_info->gl_vendor = context_gpu_info.gl_vendor;
 137   basic_gpu_info->gl_version = context_gpu_info.gl_version;
 138   basic_gpu_info->gl_extensions = context_gpu_info.gl_extensions;
 139   basic_gpu_info->pixel_shader_version =
 140       context_gpu_info.pixel_shader_version;
 141   basic_gpu_info->vertex_shader_version =
 142       context_gpu_info.vertex_shader_version;
 143   basic_gpu_info->gl_ws_vendor = context_gpu_info.gl_ws_vendor;
 144   basic_gpu_info->gl_ws_version = context_gpu_info.gl_ws_version;
 145   basic_gpu_info->gl_ws_extensions = context_gpu_info.gl_ws_extensions;
 146   basic_gpu_info->gl_reset_notification_strategy =
 147       context_gpu_info.gl_reset_notification_strategy;
 148
 149   if (!context_gpu_info.driver_vendor.empty())
 150     basic_gpu_info->driver_vendor = context_gpu_info.driver_vendor;
 151   if (!context_gpu_info.driver_version.empty())
 152     basic_gpu_info->driver_version = context_gpu_info.driver_version;
 153
 154   basic_gpu_info->can_lose_context = context_gpu_info.can_lose_context;
 155   basic_gpu_info->sandboxed = context_gpu_info.sandboxed;
 156   basic_gpu_info->direct_rendering = context_gpu_info.direct_rendering;
 157   basic_gpu_info->finalized = context_gpu_info.finalized;
 158   basic_gpu_info->initialization_time = context_gpu_info.initialization_time;
 159 }
 160
 161 }  // namespace gpu
 162