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1 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BENCH_GL_TESTBASE_H_ | 5 #ifndef BENCH_GL_TESTBASE_H_ |
6 #define BENCH_GL_TESTBASE_H_ | 6 #define BENCH_GL_TESTBASE_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 | 9 |
10 #include "main.h" | 10 #include "main.h" |
11 | 11 |
12 | 12 |
13 namespace glbench { | 13 namespace glbench { |
14 | 14 |
15 class TestBase; | 15 class TestBase; |
16 | 16 |
17 // Runs test->TestFunc() passing it sequential powers of two (8, 16, 32,...) | 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 | 18 // recording time it took. The data is then fitted linearly, obtaining slope |
19 // and bias such that: | 19 // and bias such that: |
20 // time it took to run x iterations = slope * x + bias | 20 // time it took to run x iterations = slope * x + bias |
21 // Returns false if one iteration of the test takes longer than | 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 | 22 // MAX_ITERATION_LENGTH_MS. The test is then assumed too slow to provide |
23 // meaningful results. | 23 // meaningful results. |
24 bool Bench(TestBase* test, float *slope, int64_t *bias); | 24 bool Bench(TestBase* test, float *slope, int64_t *bias); |
25 | 25 |
26 // Runs Bench on an instance of TestBase and prints out results. | 26 // Runs Bench on an instance of TestBase and prints out results. |
27 // | 27 // |
28 // coefficient is multiplied (if inverse is false) or divided (if inverse is | 28 // coefficient is multiplied (if inverse is false) or divided (if inverse is |
29 // true) by the slope and the result is printed. | 29 // true) by the slope and the result is printed. |
30 // | 30 // |
31 // Examples: | 31 // Examples: |
32 // coefficient = width * height (measured in pixels), inverse = true | 32 // coefficient = width * height (measured in pixels), inverse = true |
33 // returns the throughput in megapixels per second; | 33 // returns the throughput in megapixels per second; |
34 // | 34 // |
35 // coefficient = 1, inverse = false | 35 // coefficient = 1, inverse = false |
36 // returns number of operations per second. | 36 // returns number of operations per second. |
37 void RunTest(TestBase* test, const char *name, float coefficient, bool inverse); | 37 void RunTest(TestBase* test, const char *name, float coefficient, bool inverse); |
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52 public: | 52 public: |
53 virtual ~DrawArraysTestFunc() {} | 53 virtual ~DrawArraysTestFunc() {} |
54 virtual bool TestFunc(int); | 54 virtual bool TestFunc(int); |
55 | 55 |
56 // Runs the test and reports results in mpixels per second, assuming each | 56 // Runs the test and reports results in mpixels per second, assuming each |
57 // iteration updates the whole window (its size is g_width by g_height). | 57 // iteration updates the whole window (its size is g_width by g_height). |
58 void FillRateTestNormal(const char* name); | 58 void FillRateTestNormal(const char* name); |
59 // Runs the test and reports results in mpixels per second, assuming each | 59 // Runs the test and reports results in mpixels per second, assuming each |
60 // iteration updates a window of width by height pixels. | 60 // iteration updates a window of width by height pixels. |
61 void FillRateTestNormalSubWindow(const char* name, float width, float height); | 61 void FillRateTestNormalSubWindow(const char* name, float width, float height); |
62 #if defined(USE_OPENGL) | |
63 // Runs the test three times: with blending on; with depth test enabled and | 62 // Runs the test three times: with blending on; with depth test enabled and |
64 // depth function of GL_NOTEQUAL; with depth function GL_NEVER. Results are | 63 // depth function of GL_NOTEQUAL; with depth function GL_NEVER. Results are |
65 // reported as in FillRateTestNormal. | 64 // reported as in FillRateTestNormal. |
66 void FillRateTestBlendDepth(const char *name); | 65 void FillRateTestBlendDepth(const char *name); |
67 #endif | |
68 }; | 66 }; |
69 | 67 |
70 // Helper class to time glDrawElements. | 68 // Helper class to time glDrawElements. |
71 class DrawElementsTestFunc : public TestBase { | 69 class DrawElementsTestFunc : public TestBase { |
72 public: | 70 public: |
73 DrawElementsTestFunc() : count_(0) {} | 71 DrawElementsTestFunc() : count_(0) {} |
74 virtual ~DrawElementsTestFunc() {} | 72 virtual ~DrawElementsTestFunc() {} |
75 virtual bool TestFunc(int); | 73 virtual bool TestFunc(int); |
76 | 74 |
77 protected: | 75 protected: |
78 // Passed to glDrawElements. | 76 // Passed to glDrawElements. |
79 GLsizei count_; | 77 GLsizei count_; |
80 }; | 78 }; |
81 | 79 |
82 } // namespace glbench | 80 } // namespace glbench |
83 | 81 |
84 #endif // BENCH_GL_TESTBASE_H_ | 82 #endif // BENCH_GL_TESTBASE_H_ |
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