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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrGpuVertex_DEFINED
#define GrGpuVertex_DEFINED
#include "gl/GrGLConfig.h"
#include "GrPoint.h"
#if GR_TEXT_SCALAR_IS_USHORT
typedef uint16_t GrTextScalar;
#define GrIntToTextScalar(x) ((uint16_t)x)
#define GrFixedToTextScalar(x) (x)
#elif GR_TEXT_SCALAR_IS_FIXED
typedef GrFixed GrTextScalar;
#define GrIntToTextScalar(x) GrIntToFixed(x)
#define GrFixedToTextScalar(x) (x)
#elif GR_TEXT_SCALAR_IS_FLOAT
typedef float GrTextScalar;
#define GrIntToTextScalar(x) ((GrTextScalar)x)
#define GrFixedToTextScalar(x) GrFixedToFloat(x)
#else
#error "Text scalar type not defined"
#endif
// text has its own vertex class, since it may want to be in fixed point (given)
// that it starts with all integers) even when the default vertices are floats
struct GrGpuTextVertex {
GrTextScalar fX;
GrTextScalar fY;
void set(GrTextScalar x, GrTextScalar y) {
fX = x;
fY = y;
}
void setI(int x, int y) {
fX = GrIntToTextScalar(x);
fY = GrIntToTextScalar(y);
}
void setX(GrFixed x, GrFixed y) {
fX = GrFixedToTextScalar(x);
fY = GrFixedToTextScalar(y);
}
// rect fan is counter-clockwise
void setRectFan(GrTextScalar l, GrTextScalar t, GrTextScalar r,
GrTextScalar b) {
GrGpuTextVertex* v = this;
v[0].set(l, t);
v[1].set(l, b);
v[2].set(r, b);
v[3].set(r, t);
}
void setIRectFan(int l, int t, int r, int b) {
this->setRectFan(GrIntToTextScalar(l), GrIntToTextScalar(t),
GrIntToTextScalar(r), GrIntToTextScalar(b));
}
void setIRectFan(int l, int t, int r, int b, size_t stride) {
GrAssert(stride > sizeof(GrGpuTextVertex));
char* v = (char*)this;
((GrGpuTextVertex*)(v + 0*stride))->setI(l, t);
((GrGpuTextVertex*)(v + 1*stride))->setI(l, b);
((GrGpuTextVertex*)(v + 2*stride))->setI(r, b);
((GrGpuTextVertex*)(v + 3*stride))->setI(r, t);
}
// counter-clockwise fan
void setXRectFan(GrFixed l, GrFixed t, GrFixed r, GrFixed b) {
this->setRectFan(GrFixedToTextScalar(l), GrFixedToTextScalar(t),
GrFixedToTextScalar(r), GrFixedToTextScalar(b));
}
void setXRectFan(GrFixed l, GrFixed t, GrFixed r, GrFixed b, size_t stride) {
GrAssert(stride > sizeof(GrGpuTextVertex));
char* v = (char*)this;
((GrGpuTextVertex*)(v + 0*stride))->setX(l, t);
((GrGpuTextVertex*)(v + 1*stride))->setX(l, b);
((GrGpuTextVertex*)(v + 2*stride))->setX(r, b);
((GrGpuTextVertex*)(v + 3*stride))->setX(r, t);
}
};
#endif
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