Geoff Lang | 125deab | 2013-08-09 13:34:16 -0400 | [diff] [blame] | 1 | #include "precompiled.h" |
| 2 | // |
| 3 | // Copyright (c) 2013 The ANGLE Project Authors. All rights reserved. |
| 4 | // Use of this source code is governed by a BSD-style license that can be |
| 5 | // found in the LICENSE file. |
| 6 | // |
| 7 | |
| 8 | // angletypes.h : Defines a variety of structures and enum types that are used throughout libGLESv2 |
| 9 | |
| 10 | #include "libGLESv2/angletypes.h" |
Jamie Madill | 3078d0f | 2014-02-04 16:04:06 -0500 | [diff] [blame] | 11 | #include "libGLESv2/ProgramBinary.h" |
| 12 | #include "libGLESv2/VertexAttribute.h" |
Geoff Lang | 125deab | 2013-08-09 13:34:16 -0400 | [diff] [blame] | 13 | |
| 14 | namespace gl |
| 15 | { |
| 16 | |
Nicolas Capens | 76b258f | 2014-04-03 10:59:42 -0400 | [diff] [blame] | 17 | bool SamplerState::swizzleRequired() const |
| 18 | { |
| 19 | return swizzleRed != GL_RED || swizzleGreen != GL_GREEN || |
| 20 | swizzleBlue != GL_BLUE || swizzleAlpha != GL_ALPHA; |
| 21 | } |
| 22 | |
Geoff Lang | 125deab | 2013-08-09 13:34:16 -0400 | [diff] [blame] | 23 | static void MinMax(int a, int b, int *minimum, int *maximum) |
| 24 | { |
| 25 | if (a < b) |
| 26 | { |
| 27 | *minimum = a; |
| 28 | *maximum = b; |
| 29 | } |
| 30 | else |
| 31 | { |
| 32 | *minimum = b; |
| 33 | *maximum = a; |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | bool ClipRectangle(const Rectangle &source, const Rectangle &clip, Rectangle *intersection) |
| 38 | { |
| 39 | int minSourceX, maxSourceX, minSourceY, maxSourceY; |
| 40 | MinMax(source.x, source.x + source.width, &minSourceX, &maxSourceX); |
| 41 | MinMax(source.y, source.y + source.height, &minSourceY, &maxSourceY); |
| 42 | |
| 43 | int minClipX, maxClipX, minClipY, maxClipY; |
| 44 | MinMax(clip.x, clip.x + clip.width, &minClipX, &maxClipX); |
| 45 | MinMax(clip.y, clip.y + clip.height, &minClipY, &maxClipY); |
| 46 | |
| 47 | if (minSourceX >= maxClipX || maxSourceX <= minClipX || minSourceY >= maxClipY || maxSourceY <= minClipY) |
| 48 | { |
| 49 | if (intersection) |
| 50 | { |
| 51 | intersection->x = minSourceX; |
| 52 | intersection->y = maxSourceY; |
| 53 | intersection->width = maxSourceX - minSourceX; |
| 54 | intersection->height = maxSourceY - minSourceY; |
| 55 | } |
| 56 | |
| 57 | return false; |
| 58 | } |
| 59 | else |
| 60 | { |
| 61 | if (intersection) |
| 62 | { |
| 63 | intersection->x = std::max(minSourceX, minClipX); |
| 64 | intersection->y = std::max(minSourceY, minClipY); |
| 65 | intersection->width = std::min(maxSourceX, maxClipX) - std::max(minSourceX, minClipX); |
| 66 | intersection->height = std::min(maxSourceY, maxClipY) - std::max(minSourceY, minClipY); |
| 67 | } |
| 68 | |
| 69 | return true; |
| 70 | } |
| 71 | } |
| 72 | |
Jamie Madill | 3078d0f | 2014-02-04 16:04:06 -0500 | [diff] [blame] | 73 | VertexFormat::VertexFormat() |
| 74 | : mType(GL_NONE), |
| 75 | mNormalized(GL_FALSE), |
| 76 | mComponents(0), |
| 77 | mPureInteger(false) |
| 78 | {} |
| 79 | |
| 80 | VertexFormat::VertexFormat(GLenum type, GLboolean normalized, GLuint components, bool pureInteger) |
| 81 | : mType(type), |
| 82 | mNormalized(normalized), |
| 83 | mComponents(components), |
| 84 | mPureInteger(pureInteger) |
| 85 | { |
| 86 | // Float data can not be normalized, so ignore the user setting |
| 87 | if (mType == GL_FLOAT || mType == GL_HALF_FLOAT || mType == GL_FIXED) |
| 88 | { |
| 89 | mNormalized = GL_FALSE; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | VertexFormat::VertexFormat(const VertexAttribute &attribute) |
| 94 | : mType(attribute.mType), |
| 95 | mNormalized(attribute.mNormalized ? GL_TRUE : GL_FALSE), |
| 96 | mComponents(attribute.mSize), |
| 97 | mPureInteger(attribute.mPureInteger) |
| 98 | { |
| 99 | // Ensure we aren't initializing a vertex format which should be using |
| 100 | // the current-value type |
| 101 | ASSERT(attribute.mArrayEnabled); |
| 102 | |
| 103 | // Float data can not be normalized, so ignore the user setting |
| 104 | if (mType == GL_FLOAT || mType == GL_HALF_FLOAT || mType == GL_FIXED) |
| 105 | { |
| 106 | mNormalized = GL_FALSE; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | VertexFormat::VertexFormat(const VertexAttribute &attribute, GLenum currentValueType) |
| 111 | : mType(attribute.mType), |
| 112 | mNormalized(attribute.mNormalized ? GL_TRUE : GL_FALSE), |
| 113 | mComponents(attribute.mSize), |
| 114 | mPureInteger(attribute.mPureInteger) |
| 115 | { |
| 116 | if (!attribute.mArrayEnabled) |
| 117 | { |
| 118 | mType = currentValueType; |
| 119 | mNormalized = GL_FALSE; |
| 120 | mComponents = 4; |
| 121 | mPureInteger = (currentValueType != GL_FLOAT); |
| 122 | } |
| 123 | |
| 124 | // Float data can not be normalized, so ignore the user setting |
| 125 | if (mType == GL_FLOAT || mType == GL_HALF_FLOAT || mType == GL_FIXED) |
| 126 | { |
| 127 | mNormalized = GL_FALSE; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | void VertexFormat::GetInputLayout(VertexFormat *inputLayout, |
| 132 | ProgramBinary *programBinary, |
| 133 | const VertexAttribute *attributes, |
| 134 | const gl::VertexAttribCurrentValueData *currentValues) |
| 135 | { |
| 136 | for (unsigned int attributeIndex = 0; attributeIndex < MAX_VERTEX_ATTRIBS; attributeIndex++) |
| 137 | { |
| 138 | int semanticIndex = programBinary->getSemanticIndex(attributeIndex); |
| 139 | |
| 140 | if (semanticIndex != -1) |
| 141 | { |
| 142 | inputLayout[semanticIndex] = VertexFormat(attributes[attributeIndex], currentValues[attributeIndex].Type); |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | bool VertexFormat::operator==(const VertexFormat &other) const |
| 148 | { |
| 149 | return (mType == other.mType && |
| 150 | mComponents == other.mComponents && |
| 151 | mNormalized == other.mNormalized && |
| 152 | mPureInteger == other.mPureInteger ); |
| 153 | } |
| 154 | |
| 155 | bool VertexFormat::operator!=(const VertexFormat &other) const |
| 156 | { |
| 157 | return !(*this == other); |
| 158 | } |
| 159 | |
| 160 | bool VertexFormat::operator<(const VertexFormat& other) const |
| 161 | { |
| 162 | if (mType != other.mType) |
| 163 | { |
| 164 | return mType < other.mType; |
| 165 | } |
| 166 | if (mNormalized != other.mNormalized) |
| 167 | { |
| 168 | return mNormalized < other.mNormalized; |
| 169 | } |
| 170 | if (mComponents != other.mComponents) |
| 171 | { |
| 172 | return mComponents < other.mComponents; |
| 173 | } |
| 174 | return mPureInteger < other.mPureInteger; |
| 175 | } |
| 176 | |
Geoff Lang | 125deab | 2013-08-09 13:34:16 -0400 | [diff] [blame] | 177 | } |