Split tests into individual files. Got rid of globals by converting them to classes.

client/deps/glbench/src/attributefetchtest.cc

+// Copyright (c) 2010 The Chromium OS 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 "main.h"
+#include "utils.h"
+#include "testbase.h"
+
+
+namespace glbench {
+
+class AttributeFetchShaderTest : public DrawElementsTestFunc {
+ public:
+  AttributeFetchShaderTest() {}
+  virtual ~AttributeFetchShaderTest() {}
+  virtual bool Run();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AttributeFetchShaderTest);
+};
+
+
+const char *simple_vertex_shader =
+"attribute vec4 c1;"
+"void main() {"
+"    gl_Position = c1;"
+"}";
+
+const char *simple_vertex_shader_2_attr =
+"attribute vec4 c1;"
+"attribute vec4 c2;"
+"void main() {"
+"    gl_Position = c1+c2;"
+"}";
+
+const char *simple_vertex_shader_4_attr =
+"attribute vec4 c1;"
+"attribute vec4 c2;"
+"attribute vec4 c3;"
+"attribute vec4 c4;"
+"void main() {"
+"    gl_Position = c1+c2+c3+c4;"
+"}";
+
+const char *simple_vertex_shader_8_attr =
+"attribute vec4 c1;"
+"attribute vec4 c2;"
+"attribute vec4 c3;"
+"attribute vec4 c4;"
+"attribute vec4 c5;"
+"attribute vec4 c6;"
+"attribute vec4 c7;"
+"attribute vec4 c8;"
+"void main() {"
+"    gl_Position = c1+c2+c3+c4+c5+c6+c7+c8;"
+"}";
+
+const char *simple_fragment_shader =
+"void main() {"
+"    gl_FragColor = vec4(0.5);"
+"}";
+
+GLuint AttributeFetchShaderProgram(int attribute_count,
+                                   GLuint vertex_buffers[]) {
+  const char *vertex_shader = NULL;
+  switch (attribute_count) {
+    case 1: vertex_shader = simple_vertex_shader; break;
+    case 2: vertex_shader = simple_vertex_shader_2_attr; break;
+    case 4: vertex_shader = simple_vertex_shader_4_attr; break;
+    case 8: vertex_shader = simple_vertex_shader_8_attr; break;
+    default: return 0;
+  }
+  GLuint program =
+    InitShaderProgram(vertex_shader, simple_fragment_shader);
+
+  for (int i = 0; i < attribute_count; i++) {
+    char attribute[] = "c_";
+    attribute[1] = '1' + i;
+    int attribute_index = glGetAttribLocation(program, attribute);
+    glBindBuffer(GL_ARRAY_BUFFER, vertex_buffers[i]);
+    glVertexAttribPointer(attribute_index, 2, GL_FLOAT, GL_FALSE, 0, NULL);
+    glEnableVertexAttribArray(attribute_index);
+  }
+
+  return program;
+}
+
+bool AttributeFetchShaderTest::Run() {
+  GLint width = 64;
+  GLint height = 64;
+
+  glViewport(-g_width, -g_height, g_width*2, g_height*2);
+
+  GLfloat *vertices = NULL;
+  GLsizeiptr vertex_buffer_size = 0;
+  CreateLattice(&vertices, &vertex_buffer_size, 1.f / g_width, 1.f / g_height,
+                width, height);
+  GLuint vertex_buffer = SetupVBO(GL_ARRAY_BUFFER,
+                                  vertex_buffer_size, vertices);
+
+  GLuint *indices = NULL;
+  GLuint index_buffer = 0;
+  GLsizeiptr index_buffer_size = 0;
+
+  // Everything will be back-face culled.
+  count_ = CreateMesh(&indices, &index_buffer_size, width, height, 0);
+  index_buffer = SetupVBO(GL_ELEMENT_ARRAY_BUFFER,
+                          index_buffer_size, indices);
+
+  glEnable(GL_CULL_FACE);
+
+  GLuint vertex_buffers[8];
+  for (GLuint i = 0; i < sizeof(vertex_buffers)/sizeof(vertex_buffers[0]); i++)
+    vertex_buffers[i] = vertex_buffer;
+
+  GLuint program = AttributeFetchShaderProgram(1, vertex_buffers);
+  RunTest(this,
+          "mvtx_sec_attribute_fetch_shader", count_, true);
+  glDeleteProgram(program);
+
+  program = AttributeFetchShaderProgram(2, vertex_buffers);
+  RunTest(this,
+          "mvtx_sec_attribute_fetch_shader_2_attr", count_, true);
+  glDeleteProgram(program);
+
+  program = AttributeFetchShaderProgram(4, vertex_buffers);
+  RunTest(this,
+          "mvtx_sec_attribute_fetch_shader_4_attr", count_, true);
+  glDeleteProgram(program);
+
+  program = AttributeFetchShaderProgram(8, vertex_buffers);
+  RunTest(this,
+          "mvtx_sec_attribute_fetch_shader_8_attr", count_, true);
+  glDeleteProgram(program);
+
+  glDeleteBuffers(1, &index_buffer);
+  delete[] indices;
+
+  glDeleteBuffers(1, &vertex_buffer);
+  delete[] vertices;
+  return true;
+}
+
+TestBase* GetAttributeFetchShaderTest() {
+  return new AttributeFetchShaderTest();
+}
+
+} // namespace glbench