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, std::vector<const ShaderInput*>& uniforms);
39 void computeUniformValues (de::Random& rnd, std::vector<VariableValue>& values, const std::vector<const ShaderInput*>& uniforms);
40
41 // \todo [2011-03-26 pyry] Move to ExpressionUtils!
42
43 bool isUndefinedValueRange (ConstValueRangeAccess valueRange);
44
45 int getConservativeValueExprDepth (const GeneratorState& state, ConstValueRangeAccess valueRange);
46 int getTypeConstructorDepth (const VariableType& type);
47
48 VariableType computeRandomType (GeneratorState& state, int maxScalars);
49 void computeRandomValueRange (GeneratorState& state, ValueRangeAccess valueRange);
50
51 float computeDynamicRangeWeight (ConstValueRangeAccess valueRange);
52
getQuantizedFloat(de::Random & rnd,float min,float max,float step)53 inline float getQuantizedFloat (de::Random& rnd, float min, float max, float step)
54 {
55 int numSteps = (int)((max-min)/step);
56 return min + step*rnd.getInt(0, numSteps);
57 }
58
quantizeFloatRange(float & min,float & max)59 inline bool quantizeFloatRange (float& min, float& max)
60 {
61 const float subdiv = 8;
62
63 float newMin = deFloatCeil(min*subdiv)/subdiv;
64 if (newMin <= max)
65 min = newMin; // Minimum value quantized
66 else
67 return false;
68
69 float newMax = deFloatFloor(max*subdiv)/subdiv;
70 if (min <= newMax)
71 max = newMax;
72 else
73 return false;
74
75 return true;
76 }
77
78 } // rsg
79
80 #endif // _RSGUTILS_HPP
81