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gfx/skia/trunk/src/gpu/effects/GrCustomCoordsTextureEffect.cpp@6474c204b198 (annotated)

gfx/skia/trunk/src/gpu/effects/GrCustomCoordsTextureEffect.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/*
michael@0	2	* Copyright 2013 Google Inc.
michael@0	3	*
michael@0	4	* Use of this source code is governed by a BSD-style license that can be
michael@0	5	* found in the LICENSE file.
michael@0	6	*/
michael@0	7
michael@0	8	#include "GrCustomCoordsTextureEffect.h"
michael@0	9	#include "gl/GrGLEffect.h"
michael@0	10	#include "gl/GrGLSL.h"
michael@0	11	#include "gl/GrGLTexture.h"
michael@0	12	#include "gl/GrGLVertexEffect.h"
michael@0	13	#include "GrTBackendEffectFactory.h"
michael@0	14	#include "GrTexture.h"
michael@0	15
michael@0	16	class GrGLCustomCoordsTextureEffect : public GrGLVertexEffect {
michael@0	17	public:
michael@0	18	GrGLCustomCoordsTextureEffect(const GrBackendEffectFactory& factory, const GrDrawEffect& drawEffect)
michael@0	19	: INHERITED (factory) {}
michael@0	20
michael@0	21	virtual void emitCode(GrGLFullShaderBuilder* builder,
michael@0	22	const GrDrawEffect& drawEffect,
michael@0	23	EffectKey key,
michael@0	24	const char* outputColor,
michael@0	25	const char* inputColor,
michael@0	26	const TransformedCoordsArray&,
michael@0	27	const TextureSamplerArray& samplers) SK_OVERRIDE {
michael@0	28	SkASSERT(1 == drawEffect.castEffect<GrCustomCoordsTextureEffect>().numVertexAttribs());
michael@0	29
michael@0	30	SkString fsCoordName;
michael@0	31	const char* vsVaryingName;
michael@0	32	const char* fsVaryingNamePtr;
michael@0	33	builder->addVarying(kVec2f_GrSLType, "textureCoords", &vsVaryingName, &fsVaryingNamePtr);
michael@0	34	fsCoordName = fsVaryingNamePtr;
michael@0	35
michael@0	36	const char* attrName =
michael@0	37	builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0])->c_str();
michael@0	38	builder->vsCodeAppendf("\t%s = %s;\n", vsVaryingName, attrName);
michael@0	39
michael@0	40	builder->fsCodeAppendf("\t%s = ", outputColor);
michael@0	41	builder->fsAppendTextureLookupAndModulate(inputColor,
michael@0	42	samplers[0],
michael@0	43	fsCoordName.c_str(),
michael@0	44	kVec2f_GrSLType);
michael@0	45	builder->fsCodeAppend(";\n");
michael@0	46	}
michael@0	47
michael@0	48	virtual void setData(const GrGLUniformManager& uman,
michael@0	49	const GrDrawEffect& drawEffect) SK_OVERRIDE {}
michael@0	50
michael@0	51	private:
michael@0	52	typedef GrGLVertexEffect INHERITED;
michael@0	53	};
michael@0	54
michael@0	55	///////////////////////////////////////////////////////////////////////////////
michael@0	56
michael@0	57	GrCustomCoordsTextureEffect::GrCustomCoordsTextureEffect(GrTexture* texture,
michael@0	58	const GrTextureParams& params)
michael@0	59	: fTextureAccess(texture, params) {
michael@0	60	this->addTextureAccess(&fTextureAccess);
michael@0	61	this->addVertexAttrib(kVec2f_GrSLType);
michael@0	62	}
michael@0	63
michael@0	64	bool GrCustomCoordsTextureEffect::onIsEqual(const GrEffect& other) const {
michael@0	65	const GrCustomCoordsTextureEffect& cte = CastEffect<GrCustomCoordsTextureEffect>(other);
michael@0	66	return fTextureAccess == cte.fTextureAccess;
michael@0	67	}
michael@0	68
michael@0	69	void GrCustomCoordsTextureEffect::getConstantColorComponents(GrColor* color,
michael@0	70	uint32_t* validFlags) const {
michael@0	71	if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
michael@0	72	GrPixelConfigIsOpaque(this->texture(0)->config())) {
michael@0	73	*validFlags = kA_GrColorComponentFlag;
michael@0	74	} else {
michael@0	75	*validFlags = 0;
michael@0	76	}
michael@0	77	}
michael@0	78
michael@0	79	const GrBackendEffectFactory& GrCustomCoordsTextureEffect::getFactory() const {
michael@0	80	return GrTBackendEffectFactory<GrCustomCoordsTextureEffect>::getInstance();
michael@0	81	}
michael@0	82
michael@0	83	///////////////////////////////////////////////////////////////////////////////
michael@0	84
michael@0	85	GR_DEFINE_EFFECT_TEST(GrCustomCoordsTextureEffect);
michael@0	86
michael@0	87	GrEffectRef* GrCustomCoordsTextureEffect::TestCreate(SkRandom* random,
michael@0	88	GrContext*,
michael@0	89	const GrDrawTargetCaps&,
michael@0	90	GrTexture* textures[]) {
michael@0	91	int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
michael@0	92	GrEffectUnitTest::kAlphaTextureIdx;
michael@0	93	static const SkShader::TileMode kTileModes[] = {
michael@0	94	SkShader::kClamp_TileMode,
michael@0	95	SkShader::kRepeat_TileMode,
michael@0	96	SkShader::kMirror_TileMode,
michael@0	97	};
michael@0	98	SkShader::TileMode tileModes[] = {
michael@0	99	kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
michael@0	100	kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
michael@0	101	};
michael@0	102	GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode :
michael@0	103	GrTextureParams::kNone_FilterMode);
michael@0	104
michael@0	105	return GrCustomCoordsTextureEffect::Create(textures[texIdx], params);
michael@0	106	}