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

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• Hash : e547aac7
  Author :
  Date : 2018-04-05T09:39:20
  

  GLES1: gl(Push|Pop)Matrix
  
  BUG=angleproject:2306
  
  Change-Id: I96498aebbbc62ebd53e5320db17ef6a54d20d2dc
  Reviewed-on: https://chromium-review.googlesource.com/998308
  Commit-Queue: Lingfeng Yang <lfy@google.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/gl_tests/gles1/MatrixStackTest.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.
  //
  
  // MatrixStackTest.cpp: Tests basic usage of gl(Push|Pop)Matrix.
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  
  #include <vector>
  
  using namespace angle;
  
  class MatrixStackTest : public ANGLETest
  {
    protected:
      MatrixStackTest()
      {
          setWindowWidth(32);
          setWindowHeight(32);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
          setConfigDepthBits(24);
      }
  };
  
  // State query: Checks the initial state is correct; that there is only one matrix on the stack.
  TEST_P(MatrixStackTest, InitialState)
  {
      glMatrixMode(GL_MODELVIEW);
      glPopMatrix();
      EXPECT_GL_ERROR(GL_STACK_UNDERFLOW);
  
      glMatrixMode(GL_PROJECTION);
      glPopMatrix();
      EXPECT_GL_ERROR(GL_STACK_UNDERFLOW);
  
      glMatrixMode(GL_TEXTURE);
      glPopMatrix();
      EXPECT_GL_ERROR(GL_STACK_UNDERFLOW);
  }
  
  // Tests that caps are greater than or equal to spec minimums and that we can actually push them
  // that much.
  TEST_P(MatrixStackTest, Limits)
  {
      GLint modelviewMatrixMax;
      GLint projectionMatrixMax;
      GLint textureMatrixMax;
      GLint textureUnits;  // For iterating over texture matrices
  
      glGetIntegerv(GL_MAX_MODELVIEW_STACK_DEPTH, &modelviewMatrixMax);
      glGetIntegerv(GL_MAX_PROJECTION_STACK_DEPTH, &projectionMatrixMax);
      glGetIntegerv(GL_MAX_TEXTURE_STACK_DEPTH, &textureMatrixMax);
      glGetIntegerv(GL_MAX_TEXTURE_UNITS, &textureUnits);
  
      EXPECT_GE(modelviewMatrixMax, 16);
      EXPECT_GE(projectionMatrixMax, 2);
      EXPECT_GE(textureMatrixMax, 2);
  
      glMatrixMode(GL_MODELVIEW);
  
      for (int i = 0; i < modelviewMatrixMax; i++)
      {
          glPushMatrix();
          if (i == modelviewMatrixMax - 1)
          {
              EXPECT_GL_ERROR(GL_STACK_OVERFLOW);
          }
          else
          {
              EXPECT_GL_NO_ERROR();
          }
      }
  
      glMatrixMode(GL_PROJECTION);
  
      for (int i = 0; i < projectionMatrixMax; i++)
      {
          glPushMatrix();
          if (i == projectionMatrixMax - 1)
          {
              EXPECT_GL_ERROR(GL_STACK_OVERFLOW);
          }
          else
          {
              EXPECT_GL_NO_ERROR();
          }
      }
  
      glMatrixMode(GL_TEXTURE);
  
      for (int i = 0; i < textureUnits; i++)
      {
          glActiveTexture(GL_TEXTURE0 + i);
          for (int j = 0; j < textureMatrixMax; j++)
          {
              glPushMatrix();
              if (j == textureMatrixMax - 1)
              {
                  EXPECT_GL_ERROR(GL_STACK_OVERFLOW);
              }
              else
              {
                  EXPECT_GL_NO_ERROR();
              }
          }
      }
  }
  
  ANGLE_INSTANTIATE_TEST(MatrixStackTest, ES1_D3D11(), ES1_OPENGL(), ES1_OPENGLES());
  

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