1 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // This test evaluates the speed of updating a single texture and using it to 6 // draw after each upload. 7 8 #include "base/logging.h" 9 10 #include "texturetest.h" 11 #include "main.h" 12 13 namespace glbench { 14 15 class TextureUpdateTest : public TextureTest { 16 public: 17 TextureUpdateTest() {} 18 virtual ~TextureUpdateTest() {} 19 virtual bool TestFunc(uint64_t iterations); 20 virtual const char* Name() const { return "texture_update"; } 21 virtual bool IsDrawTest() const { return true; } 22 }; 23 24 bool TextureUpdateTest::TestFunc(uint64_t iterations) { 25 glGetError(); 26 27 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 28 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); 29 glFlush(); 30 for (uint64_t i = 0; i < iterations; ++i) { 31 switch (flavor_) { 32 case TEX_IMAGE: 33 glTexImage2D(GL_TEXTURE_2D, 0, texel_gl_format_, width_, height_, 34 0, texel_gl_format_, GL_UNSIGNED_BYTE, 35 pixels_[i % kNumberOfTextures].get()); 36 break; 37 case TEX_SUBIMAGE: 38 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width_, height_, 39 texel_gl_format_, GL_UNSIGNED_BYTE, 40 pixels_[i % kNumberOfTextures].get()); 41 break; 42 } 43 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); 44 } 45 return true; 46 } 47 48 TestBase* GetTextureUpdateTest() { 49 return new TextureUpdateTest; 50 } 51 52 } // namespace glbench 53
