shaders.cpp File Reference

#include "export.h"
#include "helpers.h"
#include "third_party/skia/include/core/SkImage.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "third_party/skia/include/effects/SkRuntimeEffect.h"
#include "wrappers.h"

Go to the source code of this file.

Functions
SKWASM_EXPORT SkShader *	shader_createLinearGradient (SkPoint *endPoints, SkColor *colors, SkScalar *stops, int count, SkTileMode tileMode, SkScalar *matrix33)
SKWASM_EXPORT SkShader *	shader_createRadialGradient (SkScalar centerX, SkScalar centerY, SkScalar radius, SkColor *colors, SkScalar *stops, int count, SkTileMode tileMode, SkScalar *matrix33)
SKWASM_EXPORT SkShader *	shader_createConicalGradient (SkPoint *endPoints, SkScalar startRadius, SkScalar endRadius, SkColor *colors, SkScalar *stops, int count, SkTileMode tileMode, SkScalar *matrix33)
SKWASM_EXPORT SkShader *	shader_createSweepGradient (SkScalar centerX, SkScalar centerY, SkColor *colors, SkScalar *stops, int count, SkTileMode tileMode, SkScalar startAngle, SkScalar endAngle, SkScalar *matrix33)
SKWASM_EXPORT void	shader_dispose (SkShader *shader)
SKWASM_EXPORT SkRuntimeEffect *	runtimeEffect_create (SkString *source)
SKWASM_EXPORT void	runtimeEffect_dispose (SkRuntimeEffect *effect)
SKWASM_EXPORT size_t	runtimeEffect_getUniformSize (SkRuntimeEffect *effect)
SKWASM_EXPORT SkShader *	shader_createRuntimeEffectShader (SkRuntimeEffect *runtimeEffect, SkData *uniforms, SkShader **children, size_t childCount)
SKWASM_EXPORT SkShader *	shader_createFromImage (SkImage *image, SkTileMode tileModeX, SkTileMode tileModeY, FilterQuality quality, SkScalar *matrix33)

Function Documentation

runtimeEffect_create()

SKWASM_EXPORT SkRuntimeEffect * runtimeEffect_create

(

SkString *

source

)

Definition at line 105 of file shaders.cpp.

                                                                      {
  auto result = SkRuntimeEffect::MakeForShader(*source);
  if (result.effect == nullptr) {
    printf("Failed to compile shader. Error text:\n%s",
           result.errorText.data());
    return nullptr;
  } else {
    return result.effect.release();
  }
}

runtimeEffect_dispose()

SKWASM_EXPORT void runtimeEffect_dispose

(

SkRuntimeEffect *

effect

)

Definition at line 116 of file shaders.cpp.

                                                                  {
  effect->unref();
}

runtimeEffect_getUniformSize()

SKWASM_EXPORT size_t runtimeEffect_getUniformSize

(

SkRuntimeEffect *

effect

)

Definition at line 120 of file shaders.cpp.

                                                                           {
  return effect->uniformSize();
}

shader_createConicalGradient()

SKWASM_EXPORT SkShader * shader_createConicalGradient	(	SkPoint *	endPoints,
		SkScalar	startRadius,
		SkScalar	endRadius,
		SkColor *	colors,
		SkScalar *	stops,
		int	count,
		SkTileMode	tileMode,
		SkScalar *	matrix33
	)

Definition at line 54 of file shaders.cpp.

                        {
  if (matrix33) {
    SkMatrix localMatrix = createMatrix(matrix33);
    return SkGradientShader::MakeTwoPointConical(
               endPoints[0], startRadius, endPoints[1], endRadius, colors,
               stops, count, tileMode, 0, &localMatrix)
        .release();
 
  } else {
    return SkGradientShader::MakeTwoPointConical(endPoints[0], startRadius,
                                                 endPoints[1], endRadius,
                                                 colors, stops, count, tileMode)
        .release();
  }
}

shader_createFromImage()

SKWASM_EXPORT SkShader * shader_createFromImage	(	SkImage *	image,
		SkTileMode	tileModeX,
		SkTileMode	tileModeY,
		FilterQuality	quality,
		SkScalar *	matrix33
	)

Definition at line 139 of file shaders.cpp.

                                                                   {
  if (matrix33) {
    SkMatrix localMatrix = createMatrix(matrix33);
    return image
        ->makeShader(tileModeX, tileModeY, samplingOptionsForQuality(quality),
                     &localMatrix)
        .release();
  } else {
    return image
        ->makeShader(tileModeX, tileModeY, samplingOptionsForQuality(quality))
        .release();
  }
}

shader_createLinearGradient()

SKWASM_EXPORT SkShader * shader_createLinearGradient	(	SkPoint *	endPoints,
		SkColor *	colors,
		SkScalar *	stops,
		int	count,
		SkTileMode	tileMode,
		SkScalar *	matrix33
	)

Definition at line 14 of file shaders.cpp.

  {
  if (matrix33) {
    SkMatrix localMatrix = createMatrix(matrix33);
    return SkGradientShader::MakeLinear(endPoints, colors, stops, count,
                                        tileMode, 0, &localMatrix)
        .release();
  } else {
    return SkGradientShader::MakeLinear(endPoints, colors, stops, count,
                                        tileMode)
        .release();
  }
}

shader_createRadialGradient()

SKWASM_EXPORT SkShader * shader_createRadialGradient	(	SkScalar	centerX,
		SkScalar	centerY,
		SkScalar	radius,
		SkColor *	colors,
		SkScalar *	stops,
		int	count,
		SkTileMode	tileMode,
		SkScalar *	matrix33
	)

Definition at line 34 of file shaders.cpp.

                                                                        {
  if (matrix33) {
    SkMatrix localMatrix = createMatrix(matrix33);
    return SkGradientShader::MakeRadial({centerX, centerY}, radius, colors,
                                        stops, count, tileMode, 0, &localMatrix)
        .release();
  } else {
    return SkGradientShader::MakeRadial({centerX, centerY}, radius, colors,
                                        stops, count, tileMode)
        .release();
  }
}

shader_createRuntimeEffectShader()

SKWASM_EXPORT SkShader * shader_createRuntimeEffectShader	(	SkRuntimeEffect *	runtimeEffect,
		SkData *	uniforms,
		SkShader **	children,
		size_t	childCount
	)

Definition at line 124 of file shaders.cpp.

                       {
  std::vector<sk_sp<SkShader>> childPointers;
  for (size_t i = 0; i < childCount; i++) {
    childPointers.emplace_back(sk_ref_sp<SkShader>(children[i]));
  }
  return runtimeEffect
      ->makeShader(SkData::MakeWithCopy(uniforms->data(), uniforms->size()),
                   childPointers.data(), childCount, nullptr)
      .release();
}

shader_createSweepGradient()

SKWASM_EXPORT SkShader * shader_createSweepGradient	(	SkScalar	centerX,
		SkScalar	centerY,
		SkColor *	colors,
		SkScalar *	stops,
		int	count,
		SkTileMode	tileMode,
		SkScalar	startAngle,
		SkScalar	endAngle,
		SkScalar *	matrix33
	)

Definition at line 78 of file shaders.cpp.

                                                                       {
  if (matrix33) {
    SkMatrix localMatrix = createMatrix(matrix33);
    return SkGradientShader::MakeSweep(centerX, centerY, colors, stops, count,
                                       tileMode, startAngle, endAngle, 0,
                                       &localMatrix)
        .release();
  } else {
    return SkGradientShader::MakeSweep(centerX, centerY, colors, stops, count,
                                       tileMode, startAngle, endAngle, 0,
                                       nullptr)
        .release();
  }
}

shader_dispose()

SKWASM_EXPORT void shader_dispose

(

SkShader *

shader

)

Definition at line 101 of file shaders.cpp.

                                                    {
  shader->unref();
}