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

client/deps/glbench/src/yuvtest.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 <stdio.h>
+#include <sys/mman.h>
+
+#include "base/logging.h"
+
+#include "main.h"
+#include "testbase.h"
+#include "utils.h"
+#include "yuv2rgb.h"
+
+namespace glbench {
+
+class YuvToRgbTest : public DrawArraysTestFunc {
+ public:
+  YuvToRgbTest(int type, const char* name) : type_(type), name_(name) {}
+  virtual ~YuvToRgbTest() {}
+  virtual bool Run();
+
+ private:
+  int type_;
+  const char* name_;
+  DISALLOW_COPY_AND_ASSIGN(YuvToRgbTest);
+};
+
+
+GLuint YuvToRgbShaderProgram(int type, GLuint vertex_buffer,
+                                    int width, int height) {
+  const char *vertex = type == 1 ? YUV2RGB_VERTEX_1 : YUV2RGB_VERTEX_2;
+  const char *fragment = type == 1 ? YUV2RGB_FRAGMENT_1 : YUV2RGB_FRAGMENT_2;
+  size_t size_vertex = 0;
+  size_t size_fragment = 0;
+  char *yuv_to_rgb_vertex = static_cast<char *>(
+      MmapFile(vertex, &size_vertex));
+  char *yuv_to_rgb_fragment = static_cast<char *>(
+      MmapFile(fragment, &size_fragment));
+  GLuint program = 0;
+
+  if (!yuv_to_rgb_fragment || !yuv_to_rgb_vertex)
+    goto done;
+
+  {
+    program = InitShaderProgram(yuv_to_rgb_vertex, yuv_to_rgb_fragment);
+
+    int imageWidthUniform = glGetUniformLocation(program, "imageWidth");
+    int imageHeightUniform = glGetUniformLocation(program, "imageHeight");
+    int textureSampler = glGetUniformLocation(program, "textureSampler");
+    int evenLinesSampler = glGetUniformLocation(program, "paritySampler");
+
+    glUniform1f(imageWidthUniform, width);
+    glUniform1f(imageHeightUniform, height);
+    glUniform1i(textureSampler, 0);
+    glUniform1i(evenLinesSampler, 1);
+
+    int attribute_index = glGetAttribLocation(program, "c");
+    glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
+    glVertexAttribPointer(attribute_index, 2, GL_FLOAT, GL_FALSE, 0, NULL);
+    glEnableVertexAttribArray(attribute_index);
+    return program;
+  }
+
+
+done:
+  munmap(yuv_to_rgb_fragment, size_fragment);
+  munmap(yuv_to_rgb_fragment, size_vertex);
+  return program;
+}
+
+
+bool YuvToRgbTest::Run() {
+  size_t size = 0;
+  GLuint texture[2];
+  GLuint program = 0;
+  GLuint vertex_buffer = 0;
+  GLfloat vertices[8] = {
+    0.f, 0.f,
+    1.f, 0.f,
+    0.f, 1.f,
+    1.f, 1.f,
+  };
+  char evenodd[2] = {0, 255};
+  const int pixel_height = YUV2RGB_HEIGHT * 2 / 3;
+
+  char *pixels = static_cast<char *>(MmapFile(YUV2RGB_NAME, &size));
+  if (!pixels) {
+    printf("# Could not open image file: %s\n", YUV2RGB_NAME);
+    goto done;
+  }
+  if (size != YUV2RGB_SIZE) {
+    printf("# Image file of wrong size, got %d, expected %d\n",
+           static_cast<int>(size), YUV2RGB_SIZE);
+    goto done;
+  }
+
+  glGenTextures(2, texture);
+  glActiveTexture(GL_TEXTURE0);
+  glBindTexture(GL_TEXTURE_2D, texture[0]);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, YUV2RGB_WIDTH, YUV2RGB_HEIGHT,
+               0, GL_LUMINANCE, GL_UNSIGNED_BYTE, pixels);
+
+  glActiveTexture(GL_TEXTURE1);
+  glBindTexture(GL_TEXTURE_2D, texture[1]);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 2, 1,
+               0, GL_LUMINANCE, GL_UNSIGNED_BYTE, evenodd);
+
+  glViewport(-YUV2RGB_WIDTH, -pixel_height, YUV2RGB_WIDTH*2, pixel_height * 2);
+  vertex_buffer = SetupVBO(GL_ARRAY_BUFFER, sizeof(vertices), vertices);
+
+  program = YuvToRgbShaderProgram(type_, vertex_buffer,
+                                  YUV2RGB_WIDTH, pixel_height);
+
+  if (program) {
+    FillRateTestNormalSubWindow(name_, std::min(YUV2RGB_WIDTH, g_width),
+                                std::min(pixel_height, g_height));
+  } else {
+    printf("# Could not set up YUV shader.\n");
+  }
+
+done:
+  glDeleteProgram(program);
+  glDeleteTextures(2, texture);
+  glDeleteBuffers(1, &vertex_buffer);
+  munmap(pixels, size);
+
+  return true;
+}
+
+
+TestBase* GetYuvToRgbTest(int type, const char* name) {
+  return new YuvToRgbTest(type, name);
+}
+
+} // namespace glbench