1 #ifndef _RSGUTILS_HPP
2 #define _RSGUTILS_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements Quality Program Random Shader Generator
5 * ----------------------------------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Utilities.
24 *//*--------------------------------------------------------------------*/
25
26 #include "rsgDefs.hpp"
27 #include "rsgShader.hpp"
28 #include "rsgVariableValue.hpp"
29 #include "deRandom.hpp"
30 #include "rsgGeneratorState.hpp"
31 #include "deMath.h"
32
33 #include <vector>
34
35 namespace rsg
36 {
37
38 void computeUnifiedUniforms(const Shader &vertexShader, const Shader &fragmentShader,
39 std::vector<const ShaderInput *> &uniforms);
40 void computeUniformValues(de::Random &rnd, std::vector<VariableValue> &values,
41 const std::vector<const ShaderInput *> &uniforms);
42
43 // \todo [2011-03-26 pyry] Move to ExpressionUtils!
44
45 bool isUndefinedValueRange(ConstValueRangeAccess valueRange);
46
47 int getConservativeValueExprDepth(const GeneratorState &state, ConstValueRangeAccess valueRange);
48 int getTypeConstructorDepth(const VariableType &type);
49
50 VariableType computeRandomType(GeneratorState &state, int maxScalars);
51 void computeRandomValueRange(GeneratorState &state, ValueRangeAccess valueRange);
52
53 float computeDynamicRangeWeight(ConstValueRangeAccess valueRange);
54
getQuantizedFloat(de::Random & rnd,float min,float max,float step)55 inline float getQuantizedFloat(de::Random &rnd, float min, float max, float step)
56 {
57 int numSteps = (int)((max - min) / step);
58 return min + step * (float)rnd.getInt(0, numSteps);
59 }
60
quantizeFloatRange(float & min,float & max)61 inline bool quantizeFloatRange(float &min, float &max)
62 {
63 const float subdiv = 8;
64
65 float newMin = deFloatCeil(min * subdiv) / subdiv;
66 if (newMin <= max)
67 min = newMin; // Minimum value quantized
68 else
69 return false;
70
71 float newMax = deFloatFloor(max * subdiv) / subdiv;
72 if (min <= newMax)
73 max = newMax;
74 else
75 return false;
76
77 return true;
78 }
79
80 } // namespace rsg
81
82 #endif // _RSGUTILS_HPP
83