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

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• Hash : 0afcac60
  Author :
  Date : 2024-02-22T11:21:15
  

  Handle count = 0 in DrawElementsIndirect
  
  Bug: angleproject:8554
  Change-Id: I9618061edf71c3d9a03ea14dfe65b54c58ee98de
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5319131
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Gregg Tavares <gman@chromium.org>
  

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• src/tests/gl_tests/DrawElementsIndirectTest.cpp

• //
  // Copyright 2024 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.
  //
  // DrawElementsIndirect tests:
  // Test issuing DrawElementsIndirect commands.
  //
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  
  using namespace angle;
  
  namespace
  {
  
  class DrawElementsIndirectTest : public ANGLETest<>
  {
    protected:
      DrawElementsIndirectTest()
      {
          setWindowWidth(64);
          setWindowHeight(64);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  };
  
  // Test that DrawElementsIndirect works when count is zero.
  TEST_P(DrawElementsIndirectTest, CountIsZero)
  {
      constexpr char kVS[] =
          "attribute vec3 a_pos;\n"
          "void main()\n"
          "{\n"
          "    gl_Position = vec4(a_pos, 1.0);\n"
          "}\n";
  
      GLProgram program;
      program.makeRaster(kVS, essl1_shaders::fs::Blue());
      glUseProgram(program);
  
      GLVertexArray va;
      glBindVertexArray(va);
  
      GLBuffer vertexBuffer;
      glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
      static float vertexData[3] = {0};
      glBufferData(GL_ARRAY_BUFFER, sizeof(vertexData), vertexData, GL_STATIC_DRAW);
  
      GLBuffer indexBuffer;
      glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
      static GLuint indexData[3] = {0};
      glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indexData), indexData, GL_STATIC_DRAW);
  
      GLBuffer indirectBuffer;
      glBindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuffer);
      static GLuint indirectData[5] = {0};
      glBufferData(GL_DRAW_INDIRECT_BUFFER, sizeof(indirectData), indirectData, GL_STATIC_DRAW);
  
      GLint posLocation = glGetAttribLocation(program, "a_pos");
      glEnableVertexAttribArray(posLocation);
      glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, 0, nullptr);
  
      glDrawElementsIndirect(GL_TRIANGLE_FAN, GL_UNSIGNED_INT, nullptr);
  
      ASSERT_GL_NO_ERROR();
  }
  
  GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(DrawElementsIndirectTest);
  ANGLE_INSTANTIATE_TEST_ES31(DrawElementsIndirectTest);
  }  // namespace

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