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| 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 #ifndef BENCH_GL_TESTBASE_H_ |
| 6 #define BENCH_GL_TESTBASE_H_ |
| 7 |
| 8 #include "base/basictypes.h" |
| 9 |
| 10 #include "main.h" |
| 11 |
| 12 |
| 13 namespace glbench { |
| 14 |
| 15 class TestBase; |
| 16 |
| 17 // Runs test->TestFunc() passing it sequential powers of two (8, 16, 32,...) |
| 18 // recording time it took. The data is then fitted linearly, obtaining slope |
| 19 // and bias such that: |
| 20 // time it took to run x iterations = slope * x + bias |
| 21 // Returns false if one iteration of the test takes longer than |
| 22 // MAX_ITERATION_LENGTH_MS. The test is then assumed too slow to provide |
| 23 // meaningful results. |
| 24 bool Bench(TestBase* test, float *slope, int64_t *bias); |
| 25 |
| 26 // Runs Bench on an instance of TestBase and prints out results. |
| 27 // |
| 28 // coefficient is multiplied (if inverse is false) or divided (if inverse is |
| 29 // true) by the slope and the result is printed. |
| 30 // |
| 31 // Examples: |
| 32 // coefficient = width * height (measured in pixels), inverse = true |
| 33 // returns the throughput in megapixels per second; |
| 34 // |
| 35 // coefficient = 1, inverse = false |
| 36 // returns number of operations per second. |
| 37 void RunTest(TestBase* test, const char *name, float coefficient, bool inverse); |
| 38 |
| 39 |
| 40 class TestBase { |
| 41 public: |
| 42 virtual ~TestBase() {} |
| 43 // Runs the test case n times. |
| 44 virtual bool TestFunc(int n) = 0; |
| 45 // Main entry point into the test. |
| 46 virtual bool Run() = 0; |
| 47 }; |
| 48 |
| 49 // Helper class to time glDrawArrays. |
| 50 class DrawArraysTestFunc : public TestBase { |
| 51 public: |
| 52 virtual ~DrawArraysTestFunc() {} |
| 53 virtual bool TestFunc(int); |
| 54 |
| 55 // Runs the test and reports results in mpixels per second, assuming each |
| 56 // iteration updates the whole window (its size is g_width by g_height). |
| 57 void FillRateTestNormal(const char* name); |
| 58 // Runs the test and reports results in mpixels per second, assuming each |
| 59 // iteration updates a window of width by height pixels. |
| 60 void FillRateTestNormalSubWindow(const char* name, float width, float height); |
| 61 #ifndef USE_EGL |
| 62 // Runs the test three times: with blending on; with depth test enabled and |
| 63 // depth function of GL_NOTEQUAL; with depth function GL_NEVER. Results are |
| 64 // reported as in FillRateTestNormal. |
| 65 void FillRateTestBlendDepth(const char *name); |
| 66 #endif |
| 67 }; |
| 68 |
| 69 // Helper class to time glDrawElements. |
| 70 class DrawElementsTestFunc : public TestBase { |
| 71 public: |
| 72 DrawElementsTestFunc() : count_(0) {} |
| 73 virtual ~DrawElementsTestFunc() {} |
| 74 virtual bool TestFunc(int); |
| 75 |
| 76 protected: |
| 77 // Passed to glDrawElements. |
| 78 GLsizei count_; |
| 79 }; |
| 80 |
| 81 } // namespace glbench |
| 82 |
| 83 #endif // BENCH_GL_TESTBASE_H_ |
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