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

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• Hash : 212f4592
  Author :
  Date : 2021-09-22T12:02:47
  

  Enable direct-to-metal backend by default
  
  We are switching over to Apple's direct-to-metal backend instead
  of generating SPIRV in the metal backend. This CL enables the
  direct-to-metal generation by default, but the SPIRV backend is
  still accessible by overriding the feature directMetalGeneration.
  
  This CL comes with a change in test expectations to catch new
  failures and clean up newly passing tests.
  
  Bug: angleproject:6080
  Change-Id: I4b10ad93c641b88857079a08fb45d3dc575d71f1
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3175664
  Reviewed-by: Gregg Tavares <gman@chromium.org>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/tests/gl_tests/FramebufferRenderMipmapTest.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.
  //
  
  #include "test_utils/ANGLETest.h"
  
  using namespace angle;
  
  class FramebufferRenderMipmapTest : public ANGLETest
  {
    protected:
      FramebufferRenderMipmapTest()
      {
          setWindowWidth(256);
          setWindowHeight(256);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  
      void testSetUp() override
      {
          mProgram = CompileProgram(essl1_shaders::vs::Simple(), essl1_shaders::fs::UniformColor());
          if (mProgram == 0)
          {
              FAIL() << "shader compilation failed.";
          }
  
          mColorLocation = glGetUniformLocation(mProgram, essl1_shaders::ColorUniform());
  
          glUseProgram(mProgram);
  
          glClearColor(0, 0, 0, 0);
          glClearDepthf(0.0);
          glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  
          glEnable(GL_BLEND);
          glDisable(GL_DEPTH_TEST);
  
          ASSERT_GL_NO_ERROR();
      }
  
      void testTearDown() override { glDeleteProgram(mProgram); }
  
      GLuint mProgram;
      GLint mColorLocation;
  };
  
  // Validate that if we are in ES3 or GL_OES_fbo_render_mipmap exists, there are no validation errors
  // when using a non-zero level in glFramebufferTexture2D.
  TEST_P(FramebufferRenderMipmapTest, Validation)
  {
      // http://anglebug.com/4092
      ANGLE_SKIP_TEST_IF(isSwiftshader());
      bool renderToMipmapSupported =
          IsGLExtensionEnabled("GL_OES_fbo_render_mipmap") || getClientMajorVersion() > 2;
  
      GLuint tex = 0;
      glGenTextures(1, &tex);
      glBindTexture(GL_TEXTURE_2D, tex);
  
      const GLint levels = 5;
      for (GLint i = 0; i < levels; i++)
      {
          GLsizei size = 1 << ((levels - 1) - i);
          glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
      }
  
      EXPECT_GL_NO_ERROR();
  
      GLuint fbo = 0;
      glGenFramebuffers(1, &fbo);
      glBindFramebuffer(GL_FRAMEBUFFER, fbo);
      EXPECT_GL_NO_ERROR();
  
      for (GLint i = 0; i < levels; i++)
      {
          glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, i);
  
          if (i > 0 && !renderToMipmapSupported)
          {
              EXPECT_GL_ERROR(GL_INVALID_VALUE);
          }
          else
          {
              EXPECT_GL_NO_ERROR();
              EXPECT_EQ(glCheckFramebufferStatus(GL_FRAMEBUFFER), GLenum(GL_FRAMEBUFFER_COMPLETE));
          }
      }
  
      glDeleteFramebuffers(1, &fbo);
      glDeleteTextures(1, &tex);
  }
  
  // Render to various levels of a texture and check that they have the correct color data via
  // ReadPixels
  TEST_P(FramebufferRenderMipmapTest, RenderToMipmap)
  {
      bool renderToMipmapSupported =
          IsGLExtensionEnabled("GL_OES_fbo_render_mipmap") || getClientMajorVersion() > 2;
      ANGLE_SKIP_TEST_IF(!renderToMipmapSupported);
  
      const GLfloat levelColors[] = {
          1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f,
          1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f,
      };
      const GLint testLevels = static_cast<GLint>(ArraySize(levelColors) / 4);
  
      GLuint tex = 0;
      glGenTextures(1, &tex);
      glBindTexture(GL_TEXTURE_2D, tex);
  
      for (GLint i = 0; i < testLevels; i++)
      {
          GLsizei size = 1 << ((testLevels - 1) - i);
          glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
      }
  
      EXPECT_GL_NO_ERROR();
  
      GLuint fbo = 0;
      glGenFramebuffers(1, &fbo);
      glBindFramebuffer(GL_FRAMEBUFFER, fbo);
      EXPECT_GL_NO_ERROR();
  
      // Render to the levels of the texture with different colors
      for (GLint i = 0; i < testLevels; i++)
      {
          glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, i);
          EXPECT_GL_NO_ERROR();
  
          glUseProgram(mProgram);
          glUniform4fv(mColorLocation, 1, levelColors + (i * 4));
  
          drawQuad(mProgram, essl1_shaders::PositionAttrib(), 0.5f);
          EXPECT_GL_NO_ERROR();
      }
  
      // Test that the levels of the texture are correct
      for (GLint i = 0; i < testLevels; i++)
      {
          glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, i);
          EXPECT_GL_NO_ERROR();
  
          const GLfloat *color = levelColors + (i * 4);
          EXPECT_PIXEL_EQ(0, 0, color[0] * 255, color[1] * 255, color[2] * 255, color[3] * 255);
      }
  
      glDeleteFramebuffers(1, &fbo);
      glDeleteTextures(1, &tex);
  
      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_ES2_AND_ES3(FramebufferRenderMipmapTest);
  

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