kc3-lang/angle/src/tests/gl_tests/SimpleOperationTest.cpp

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• Hash : 2a63b3f8
  Author :
  Date : 2016-02-08T12:29:08
  

  Re-land "Implement EGL_experimental_present_path_angle"
  
  - Re-land with clang fix.
  
  This allows ANGLE to render directly onto a D3D swapchain in the correct
  orientation when using the D3D11 renderer.
  
  The trick is to add an extra uniform to each shader which takes either
  the value +1.0 or -1.0. When rendering to a texture, ANGLE sets this
  value to -1.0. When rendering to the default framebuffer, ANGLE sets
  this value to +1.0. ANGLE multiplies vertex positions by this value in
  the VS to invert rendering when appropriate. It also corrects other
  state (e.g. viewport/scissor rect) and shader built-in values
  (e.g. gl_FragCoord).
  
  This saves a substantial amount of GPU time and lowers power
  consumption. For example, the old method (where ANGLE renders all
  content onto an offscreen texture, and then copies/inverts this onto the
  swapchain at eglSwapBuffers() time) uses about 20% of the GPU each frame
  on a Lumia 630.
  
  Verification:
  + dEQP GL ES2 tests pass when "present path fast" is enabled
  + all ANGLE_end2end_tests pass when "present path fast" is enabled
  
  BUG=angleproject:1219
  
  Change-Id: I56b339897828753a616d7bae837a2f354dba9c63
  Reviewed-on: https://chromium-review.googlesource.com/326730
  Tryjob-Request: Austin Kinross <aukinros@microsoft.com>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/gl_tests/SimpleOperationTest.cpp

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // SimpleOperationTest:
  //   Basic GL commands such as linking a program, initializing a buffer, etc.
  
  #include "test_utils/ANGLETest.h"
  
  #include <vector>
  
  using namespace angle;
  
  namespace
  {
  
  class SimpleOperationTest : public ANGLETest
  {
    protected:
      SimpleOperationTest()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  };
  
  TEST_P(SimpleOperationTest, CompileVertexShader)
  {
      const std::string source = SHADER_SOURCE
      (
          attribute vec4 a_input;
          void main()
          {
              gl_Position = a_input;
          }
      );
  
      GLuint shader = CompileShader(GL_VERTEX_SHADER, source);
      EXPECT_NE(shader, 0u);
      glDeleteShader(shader);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, CompileFragmentShader)
  {
      const std::string source = SHADER_SOURCE
      (
          precision mediump float;
          varying vec4 v_input;
          void main()
          {
              gl_FragColor = v_input;
          }
      );
  
      GLuint shader = CompileShader(GL_FRAGMENT_SHADER, source);
      EXPECT_NE(shader, 0u);
      glDeleteShader(shader);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, LinkProgram)
  {
      const std::string vsSource = SHADER_SOURCE
      (
          void main()
          {
              gl_Position = vec4(1.0, 1.0, 1.0, 1.0);
          }
      );
  
      const std::string fsSource = SHADER_SOURCE
      (
          void main()
          {
              gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
          }
      );
  
      GLuint program = CompileProgram(vsSource, fsSource);
      EXPECT_NE(program, 0u);
      glDeleteProgram(program);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, LinkProgramWithUniforms)
  {
      const std::string vsSource = SHADER_SOURCE
      (
          void main()
          {
              gl_Position = vec4(1.0, 1.0, 1.0, 1.0);
          }
      );
  
      const std::string fsSource = SHADER_SOURCE
      (
          precision mediump float;
          uniform vec4 u_input;
          void main()
          {
              gl_FragColor = u_input;
          }
      );
  
      GLuint program = CompileProgram(vsSource, fsSource);
      EXPECT_NE(program, 0u);
  
      GLint uniformLoc = glGetUniformLocation(program, "u_input");
      EXPECT_NE(-1, uniformLoc);
  
      glDeleteProgram(program);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, LinkProgramWithAttributes)
  {
      const std::string vsSource = SHADER_SOURCE
      (
          attribute vec4 a_input;
          void main()
          {
              gl_Position = a_input;
          }
      );
  
      const std::string fsSource = SHADER_SOURCE
      (
          void main()
          {
              gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
          }
      );
  
      GLuint program = CompileProgram(vsSource, fsSource);
      EXPECT_NE(program, 0u);
  
      GLint attribLoc = glGetAttribLocation(program, "a_input");
      EXPECT_NE(-1, attribLoc);
  
      glDeleteProgram(program);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, BufferDataWithData)
  {
      GLuint buffer;
      glGenBuffers(1, &buffer);
      glBindBuffer(GL_ARRAY_BUFFER, buffer);
  
      std::vector<uint8_t> data(1024);
      glBufferData(GL_ARRAY_BUFFER, data.size(), &data[0], GL_STATIC_DRAW);
  
      glDeleteBuffers(1, &buffer);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, BufferDataWithNoData)
  {
      GLuint buffer;
      glGenBuffers(1, &buffer);
      glBindBuffer(GL_ARRAY_BUFFER, buffer);
      glBufferData(GL_ARRAY_BUFFER, 1024, nullptr, GL_STATIC_DRAW);
      glDeleteBuffers(1, &buffer);
  
      EXPECT_GL_NO_ERROR();
  }
  
  TEST_P(SimpleOperationTest, BufferSubData)
  {
      GLuint buffer;
      glGenBuffers(1, &buffer);
      glBindBuffer(GL_ARRAY_BUFFER, buffer);
  
      const size_t bufferSize = 1024;
      glBufferData(GL_ARRAY_BUFFER, bufferSize, nullptr, GL_STATIC_DRAW);
  
      const size_t subDataCount = 16;
      std::vector<uint8_t> data(bufferSize / subDataCount);
      for (size_t i = 0; i < subDataCount; i++)
      {
          glBufferSubData(GL_ARRAY_BUFFER, data.size() * i, data.size(), &data[0]);
      }
  
      glDeleteBuffers(1, &buffer);
  
      EXPECT_GL_NO_ERROR();
  }
  
  // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
  ANGLE_INSTANTIATE_TEST(SimpleOperationTest,
                         ES2_D3D9(),
                         ES2_D3D11(EGL_EXPERIMENTAL_PRESENT_PATH_COPY_ANGLE),
                         ES2_D3D11(EGL_EXPERIMENTAL_PRESENT_PATH_FAST_ANGLE),
                         ES3_D3D11(),
                         ES2_OPENGL(),
                         ES3_OPENGL(),
                         ES2_OPENGLES(),
                         ES3_OPENGLES());
  
  } // namespace
  

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