Send coverage VA as floats instead of bytes

include/gpu/GrColor.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 70 matching lines @@
 
 /** Converts a GrColor to an rgba array of GrGLfloat */
 static inline void GrColorToRGBAFloat(GrColor color, float rgba[4]) {
     static const float ONE_OVER_255 = 1.f / 255.f;
     rgba[0] = GrColorUnpackR(color) * ONE_OVER_255;
     rgba[1] = GrColorUnpackG(color) * ONE_OVER_255;
     rgba[2] = GrColorUnpackB(color) * ONE_OVER_255;
     rgba[3] = GrColorUnpackA(color) * ONE_OVER_255;
 }
 
+/** Normalizes and coverts an uint8_t to a float. [0, 255] -> [0.0, 1.0] */
+static inline float GrNormalizeByteToFloat(uint8_t value) {
+    static const float ONE_OVER_255 = 1.f / 255.f;
+    return value * ONE_OVER_255;
+}
+
 /** Determines whether the color is opaque or not. */
 static inline bool GrColorIsOpaque(GrColor color) {
     return (color & (0xFFU << GrColor_SHIFT_A)) == (0xFFU << GrColor_SHIFT_A);
 }
 
 /**
  * Flags used for bitfields of color components. They are defined so that the bit order reflects the
  * GrColor shift order.
  */
 enum GrColorComponentFlags {
@@ skipping 53 matching lines @@
     GR_STATIC_ASSERT(6  == kBGRA_8888_GrPixelConfig);
     GR_STATIC_ASSERT(7  == kETC1_GrPixelConfig);
     GR_STATIC_ASSERT(8  == kLATC_GrPixelConfig);
     GR_STATIC_ASSERT(9  == kR11_EAC_GrPixelConfig);
     GR_STATIC_ASSERT(10 == kASTC_12x12_GrPixelConfig);
     GR_STATIC_ASSERT(11 == kRGBA_float_GrPixelConfig);
     GR_STATIC_ASSERT(SK_ARRAY_COUNT(kFlags) == kGrPixelConfigCnt);
 }
 
 #endif