1 /* 2 Copyright 2010 Google Inc. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 18 #ifndef GrGpuVertex_DEFINED 19 #define GrGpuVertex_DEFINED 20 21 #include "GrGLConfig.h" 22 #include "GrPoint.h" 23 24 #if GR_TEXT_SCALAR_IS_USHORT 25 typedef uint16_t GrTextScalar; 26 #define GrIntToTextScalar(x) ((uint16_t)x) 27 #define GrFixedToTextScalar(x) (x) 28 #elif GR_TEXT_SCALAR_IS_FIXED 29 typedef GrFixed GrTextScalar; 30 #define GrIntToTextScalar(x) GrIntToFixed(x) 31 #define GrFixedToTextScalar(x) (x) 32 #elif GR_TEXT_SCALAR_IS_FLOAT 33 typedef float GrTextScalar; 34 #define GrIntToTextScalar(x) ((GrTextScalar)x) 35 #define GrFixedToTextScalar(x) GrFixedToFloat(x) 36 #else 37 #error "Text scalar type not defined" 38 #endif 39 40 // text has its own vertex class, since it may want to be in fixed point (given) 41 // that it starts with all integers) even when the default vertices are floats 42 struct GrGpuTextVertex { 43 GrTextScalar fX; 44 GrTextScalar fY; 45 setGrGpuTextVertex46 void set(GrTextScalar x, GrTextScalar y) { 47 fX = x; 48 fY = y; 49 } 50 setIGrGpuTextVertex51 void setI(int x, int y) { 52 fX = GrIntToTextScalar(x); 53 fY = GrIntToTextScalar(y); 54 } 55 setXGrGpuTextVertex56 void setX(GrFixed x, GrFixed y) { 57 fX = GrFixedToTextScalar(x); 58 fY = GrFixedToTextScalar(y); 59 } 60 61 // rect fan is counter-clockwise 62 setRectFanGrGpuTextVertex63 void setRectFan(GrTextScalar l, GrTextScalar t, GrTextScalar r, 64 GrTextScalar b) { 65 GrGpuTextVertex* v = this; 66 v[0].set(l, t); 67 v[1].set(l, b); 68 v[2].set(r, b); 69 v[3].set(r, t); 70 } 71 setIRectFanGrGpuTextVertex72 void setIRectFan(int l, int t, int r, int b) { 73 this->setRectFan(GrIntToTextScalar(l), GrIntToTextScalar(t), 74 GrIntToTextScalar(r), GrIntToTextScalar(b)); 75 } 76 setIRectFanGrGpuTextVertex77 void setIRectFan(int l, int t, int r, int b, size_t stride) { 78 GrAssert(stride > sizeof(GrGpuTextVertex)); 79 char* v = (char*)this; 80 ((GrGpuTextVertex*)(v + 0*stride))->setI(l, t); 81 ((GrGpuTextVertex*)(v + 1*stride))->setI(l, b); 82 ((GrGpuTextVertex*)(v + 2*stride))->setI(r, b); 83 ((GrGpuTextVertex*)(v + 3*stride))->setI(r, t); 84 } 85 86 // counter-clockwise fan setXRectFanGrGpuTextVertex87 void setXRectFan(GrFixed l, GrFixed t, GrFixed r, GrFixed b) { 88 this->setRectFan(GrFixedToTextScalar(l), GrFixedToTextScalar(t), 89 GrFixedToTextScalar(r), GrFixedToTextScalar(b)); 90 } 91 setXRectFanGrGpuTextVertex92 void setXRectFan(GrFixed l, GrFixed t, GrFixed r, GrFixed b, size_t stride) { 93 GrAssert(stride > sizeof(GrGpuTextVertex)); 94 char* v = (char*)this; 95 ((GrGpuTextVertex*)(v + 0*stride))->setX(l, t); 96 ((GrGpuTextVertex*)(v + 1*stride))->setX(l, b); 97 ((GrGpuTextVertex*)(v + 2*stride))->setX(r, b); 98 ((GrGpuTextVertex*)(v + 3*stride))->setX(r, t); 99 } 100 101 }; 102 103 #endif 104 105