kc3-lang/angle/src/tests/gl_tests/gles1/MatrixBuiltinsTest.cpp

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• Hash : bb5ce5cc
  Author :
  Date : 2018-04-09T08:08:46
  

  GLES1: Built-in matrix operations
  
  glRotate
  glTranslate
  glScale
  glFrustum
  glPerspective
  glOrtho
  
  BUG=angleproject:2306
  
  Change-Id: Ia9321d52f5824ef7c15b56d94e23ff3b1fbc3151
  Reviewed-on: https://chromium-review.googlesource.com/1002915
  Commit-Queue: Lingfeng Yang <lfy@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/tests/gl_tests/gles1/MatrixBuiltinsTest.cpp

• //
  // Copyright 2018 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.
  //
  
  // MatrixBuiltinsTest.cpp: Tests basic usage of builtin matrix operations.
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  
  #include "common/matrix_utils.h"
  #include "random_utils.h"
  
  #include <stdint.h>
  
  using namespace angle;
  
  class MatrixBuiltinsTest : public ANGLETest
  {
    protected:
      MatrixBuiltinsTest()
      {
          setWindowWidth(32);
          setWindowHeight(32);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
          setConfigDepthBits(24);
      }
  };
  
  // Test rotation and check the matrix for closeness to a rotation matrix.
  TEST_P(MatrixBuiltinsTest, Rotate)
  {
      constexpr float angle = 90.0f;
      constexpr float x     = 1.0f;
      constexpr float y     = 1.0f;
      constexpr float z     = 1.0f;
  
      angle::Mat4 testMatrix = angle::Mat4::Rotate(angle, angle::Vector3(x, y, z));
  
      glRotatef(angle, x, y, z);
      EXPECT_GL_NO_ERROR();
  
      angle::Mat4 outputMatrix;
      glGetFloatv(GL_MODELVIEW_MATRIX, outputMatrix.data());
      EXPECT_GL_NO_ERROR();
  
      EXPECT_TRUE(testMatrix.nearlyEqual(0.00001f, outputMatrix));
  }
  
  // Test translation and check the matrix for closeness to a translation matrix.
  TEST_P(MatrixBuiltinsTest, Translate)
  {
      constexpr float x = 1.0f;
      constexpr float y = 1.0f;
      constexpr float z = 1.0f;
  
      angle::Mat4 testMatrix = angle::Mat4::Translate(angle::Vector3(x, y, z));
  
      glTranslatef(1.0f, 0.0f, 0.0f);
      glTranslatef(0.0f, 1.0f, 0.0f);
      glTranslatef(0.0f, 0.0f, 1.0f);
      EXPECT_GL_NO_ERROR();
  
      angle::Mat4 outputMatrix;
      glGetFloatv(GL_MODELVIEW_MATRIX, outputMatrix.data());
      EXPECT_GL_NO_ERROR();
  
      EXPECT_TRUE(testMatrix.nearlyEqual(0.00001f, outputMatrix));
  }
  
  // Test scale and check the matrix for closeness to a scale matrix.
  TEST_P(MatrixBuiltinsTest, Scale)
  {
      constexpr float x = 3.0f;
      constexpr float y = 9.0f;
      constexpr float z = 27.0f;
  
      angle::Mat4 testMatrix = angle::Mat4::Scale(angle::Vector3(x, y, z));
  
      glScalef(3.0f, 3.0f, 3.0f);
      glScalef(1.0f, 3.0f, 3.0f);
      glScalef(1.0f, 1.0f, 3.0f);
      EXPECT_GL_NO_ERROR();
  
      angle::Mat4 outputMatrix;
      glGetFloatv(GL_MODELVIEW_MATRIX, outputMatrix.data());
      EXPECT_GL_NO_ERROR();
  
      EXPECT_TRUE(testMatrix.nearlyEqual(0.00001f, outputMatrix));
  }
  
  // Test frustum projection and check the matrix values.
  TEST_P(MatrixBuiltinsTest, Frustum)
  {
  
      constexpr float l = -1.0f;
      constexpr float r = 1.0f;
      constexpr float b = -1.0f;
      constexpr float t = 1.0f;
      constexpr float n = 0.1f;
      constexpr float f = 1.0f;
  
      angle::Mat4 testMatrix = angle::Mat4::Frustum(l, r, b, t, n, f);
  
      glFrustumf(l, r, b, t, n, f);
      EXPECT_GL_NO_ERROR();
  
      angle::Mat4 outputMatrix;
      glGetFloatv(GL_MODELVIEW_MATRIX, outputMatrix.data());
      EXPECT_GL_NO_ERROR();
  
      EXPECT_TRUE(testMatrix.nearlyEqual(0.00001f, outputMatrix));
  }
  
  // Test orthographic projection and check the matrix values.
  TEST_P(MatrixBuiltinsTest, Ortho)
  {
      constexpr float l = -1.0f;
      constexpr float r = 1.0f;
      constexpr float b = -1.0f;
      constexpr float t = 1.0f;
      constexpr float n = 0.1f;
      constexpr float f = 1.0f;
  
      angle::Mat4 testMatrix = angle::Mat4::Ortho(l, r, b, t, n, f);
  
      glOrthof(l, r, b, t, n, f);
      EXPECT_GL_NO_ERROR();
  
      angle::Mat4 outputMatrix;
      glGetFloatv(GL_MODELVIEW_MATRIX, outputMatrix.data());
      EXPECT_GL_NO_ERROR();
  
      EXPECT_TRUE(testMatrix.nearlyEqual(0.00001f, outputMatrix));
  }
  
  // Test that GL_INVALID_VALUE is issued if potential divide by zero situations happen for
  // glFrustumf.
  TEST_P(MatrixBuiltinsTest, FrustumNegative)
  {
      glFrustumf(1.0f, 1.0f, 0.0f, 1.0f, 0.1f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glFrustumf(0.0f, 1.0f, 1.0f, 1.0f, 0.1f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glFrustumf(0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glFrustumf(0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glFrustumf(0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glFrustumf(0.0f, 1.0f, 0.0f, 1.0f, -1.0f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
  }
  
  // Test that GL_INVALID_VALUE is issued if potential divide by zero situations happen for glOrthof.
  TEST_P(MatrixBuiltinsTest, OrthoNegative)
  {
      glOrthof(1.0f, 1.0f, 0.0f, 1.0f, 0.1f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glOrthof(0.0f, 1.0f, 1.0f, 1.0f, 0.1f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glOrthof(0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glOrthof(0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glOrthof(0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
      glOrthof(0.0f, 1.0f, 0.0f, 1.0f, -1.0f, 1.0f);
      EXPECT_GL_ERROR(GL_INVALID_VALUE);
  }
  
  ANGLE_INSTANTIATE_TEST(MatrixBuiltinsTest, ES1_D3D11(), ES1_OPENGL(), ES1_OPENGLES());
  

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