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 "main.h" 9 #include "texturetest.h" 10 11 namespace glbench { 12 13 class TextureUpdateTest : public TextureTest { 14 public: 15 TextureUpdateTest() {} 16 virtual ~TextureUpdateTest() {} 17 virtual bool TestFunc(uint64_t iterations); 18 virtual const char* Name() const { return "texture_update"; } 19 virtual bool IsDrawTest() const { return true; } 20 }; 21 22 bool TextureUpdateTest::TestFunc(uint64_t iterations) { 23 glGetError(); 24 25 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 26 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); 27 glFlush(); 28 for (uint64_t i = 0; i < iterations; ++i) { 29 switch (flavor_) { 30 case TEX_IMAGE: 31 glTexImage2D(GL_TEXTURE_2D, 0, texel_gl_format_, width_, height_, 0, 32 texel_gl_format_, GL_UNSIGNED_BYTE, 33 pixels_[i % kNumberOfTextures].get()); 34 break; 35 case TEX_SUBIMAGE: 36 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width_, height_, 37 texel_gl_format_, GL_UNSIGNED_BYTE, 38 pixels_[i % kNumberOfTextures].get()); 39 break; 40 } 41 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); 42 } 43 return true; 44 } 45 46 TestBase* GetTextureUpdateTest() { 47 return new TextureUpdateTest; 48 } 49 50 } // namespace glbench 51
