1 2 /* 3 * Copyright 2010 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 11 #ifndef GrGpuVertex_DEFINED 12 #define GrGpuVertex_DEFINED 13 14 #include "gl/GrGLConfig.h" 15 #include "GrPoint.h" 16 17 #if GR_TEXT_SCALAR_IS_USHORT 18 typedef uint16_t GrTextScalar; 19 #define GrIntToTextScalar(x) ((uint16_t)x) 20 #define GrFixedToTextScalar(x) (x) 21 #elif GR_TEXT_SCALAR_IS_FIXED 22 typedef GrFixed GrTextScalar; 23 #define GrIntToTextScalar(x) GrIntToFixed(x) 24 #define GrFixedToTextScalar(x) (x) 25 #elif GR_TEXT_SCALAR_IS_FLOAT 26 typedef float GrTextScalar; 27 #define GrIntToTextScalar(x) ((GrTextScalar)x) 28 #define GrFixedToTextScalar(x) GrFixedToFloat(x) 29 #else 30 #error "Text scalar type not defined" 31 #endif 32 33 // text has its own vertex class, since it may want to be in fixed point (given) 34 // that it starts with all integers) even when the default vertices are floats 35 struct GrGpuTextVertex { 36 GrTextScalar fX; 37 GrTextScalar fY; 38 39 void set(GrTextScalar x, GrTextScalar y) { 40 fX = x; 41 fY = y; 42 } 43 44 void setI(int x, int y) { 45 fX = GrIntToTextScalar(x); 46 fY = GrIntToTextScalar(y); 47 } 48 49 void setX(GrFixed x, GrFixed y) { 50 fX = GrFixedToTextScalar(x); 51 fY = GrFixedToTextScalar(y); 52 } 53 54 // rect fan is counter-clockwise 55 56 void setRectFan(GrTextScalar l, GrTextScalar t, GrTextScalar r, 57 GrTextScalar b) { 58 GrGpuTextVertex* v = this; 59 v[0].set(l, t); 60 v[1].set(l, b); 61 v[2].set(r, b); 62 v[3].set(r, t); 63 } 64 65 void setIRectFan(int l, int t, int r, int b) { 66 this->setRectFan(GrIntToTextScalar(l), GrIntToTextScalar(t), 67 GrIntToTextScalar(r), GrIntToTextScalar(b)); 68 } 69 70 void setIRectFan(int l, int t, int r, int b, size_t stride) { 71 GrAssert(stride > sizeof(GrGpuTextVertex)); 72 char* v = (char*)this; 73 ((GrGpuTextVertex*)(v + 0*stride))->setI(l, t); 74 ((GrGpuTextVertex*)(v + 1*stride))->setI(l, b); 75 ((GrGpuTextVertex*)(v + 2*stride))->setI(r, b); 76 ((GrGpuTextVertex*)(v + 3*stride))->setI(r, t); 77 } 78 79 // counter-clockwise fan 80 void setXRectFan(GrFixed l, GrFixed t, GrFixed r, GrFixed b) { 81 this->setRectFan(GrFixedToTextScalar(l), GrFixedToTextScalar(t), 82 GrFixedToTextScalar(r), GrFixedToTextScalar(b)); 83 } 84 85 void setXRectFan(GrFixed l, GrFixed t, GrFixed r, GrFixed b, size_t stride) { 86 GrAssert(stride > sizeof(GrGpuTextVertex)); 87 char* v = (char*)this; 88 ((GrGpuTextVertex*)(v + 0*stride))->setX(l, t); 89 ((GrGpuTextVertex*)(v + 1*stride))->setX(l, b); 90 ((GrGpuTextVertex*)(v + 2*stride))->setX(r, b); 91 ((GrGpuTextVertex*)(v + 3*stride))->setX(r, t); 92 } 93 94 }; 95 96 #endif 97 98
