GrRRectEffect.cpp File Reference

#include "src/gpu/ganesh/effects/GrRRectEffect.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRRect.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkString.h"
#include "include/private/base/SkAssert.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/base/SkRandom.h"
#include "src/base/SkTLazy.h"
#include "src/core/SkRRectPriv.h"
#include "src/core/SkSLTypeShared.h"
#include "src/gpu/KeyBuilder.h"
#include "src/gpu/ganesh/GrCaps.h"
#include "src/gpu/ganesh/GrFragmentProcessor.h"
#include "src/gpu/ganesh/GrProcessorUnitTest.h"
#include "src/gpu/ganesh/GrShaderCaps.h"
#include "src/gpu/ganesh/effects/GrOvalEffect.h"
#include "src/gpu/ganesh/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/ganesh/glsl/GrGLSLProgramDataManager.h"
#include "src/gpu/ganesh/glsl/GrGLSLUniformHandler.h"
#include <algorithm>
#include <cstdint>
#include <tuple>
#include <utility>

Go to the source code of this file.

Classes
class	CircularRRectEffect::Impl
class	EllipticalRRectEffect::Impl

Functions
static bool	elliptical_effect_uses_scale (const GrShaderCaps &caps, const SkRRect &rrect)

Variables
static const SkScalar	kRadiusMin = SK_ScalarHalf

Function Documentation

elliptical_effect_uses_scale()

static bool elliptical_effect_uses_scale ( const GrShaderCaps &  caps, const SkRRect &  rrect  )

static

Definition at line 513 of file GrRRectEffect.cpp.

                                                                                         {
    // Keep shaders consistent across varying radii when in reduced shader mode.
    if (caps.fReducedShaderMode) {
        return true;
    }
    // If we're on a device where float != fp32 then we'll do the distance computation in a space
    // that is normalized by the largest radius. The scale uniform will be scale, 1/scale. The
    // radii uniform values are already in this normalized space.
    if (!caps.fFloatIs32Bits) {
        return true;
    }
    // Additionally, even if we have fp32, large radii can underflow 1/radii^2 terms leading to
    // blurry coverage. This effect applies to simple and nine-patch, so only need to check TL+BR
    const SkVector& r0 = rrect.radii(SkRRect::kUpperLeft_Corner);
    const SkVector& r1 = rrect.radii(SkRRect::kLowerRight_Corner);
    float maxRadius = std::max(std::max(r0.fX, r0.fY), std::max(r1.fX, r1.fY));
    return SkScalarNearlyZero(1.f / (maxRadius * maxRadius));
}

Variable Documentation

kRadiusMin

const SkScalar kRadiusMin = SK_ScalarHalf

static

Definition at line 37 of file GrRRectEffect.cpp.