The Tor Browser: gfx/skia/trunk/src/gpu/effects/GrSimpleTextureEffect.cpp@6474c204b198

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

     1 /*

     2  * Copyright 2012 Google Inc.

     3  *

     4  * Use of this source code is governed by a BSD-style license that can be

     5  * found in the LICENSE file.

     6  */

     8 #include "GrSimpleTextureEffect.h"

     9 #include "gl/GrGLEffect.h"

    10 #include "gl/GrGLSL.h"

    11 #include "gl/GrGLTexture.h"

    12 #include "GrTBackendEffectFactory.h"

    13 #include "GrTexture.h"

    15 class GrGLSimpleTextureEffect : public GrGLEffect {

    16 public:

    17     GrGLSimpleTextureEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)

    18         : INHERITED (factory) {

    19     }

    21     virtual void emitCode(GrGLShaderBuilder* builder,

    22                           const GrDrawEffect& drawEffect,

    23                           EffectKey key,

    24                           const char* outputColor,

    25                           const char* inputColor,

    26                           const TransformedCoordsArray& coords,

    27                           const TextureSamplerArray& samplers) SK_OVERRIDE {

    28         builder->fsCodeAppendf("\t%s = ", outputColor);

    29         builder->fsAppendTextureLookupAndModulate(inputColor,

    30                                                   samplers[0],

    31                                                   coords[0].c_str(),

    32                                                   coords[0].type());

    33         builder->fsCodeAppend(";\n");

    34     }

    36 private:

    37     typedef GrGLEffect INHERITED;

    38 };

    40 ///////////////////////////////////////////////////////////////////////////////

    42 void GrSimpleTextureEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {

    43     this->updateConstantColorComponentsForModulation(color, validFlags);

    44 }

    46 const GrBackendEffectFactory& GrSimpleTextureEffect::getFactory() const {

    47     return GrTBackendEffectFactory<GrSimpleTextureEffect>::getInstance();

    48 }

    50 ///////////////////////////////////////////////////////////////////////////////

    52 GR_DEFINE_EFFECT_TEST(GrSimpleTextureEffect);

    54 GrEffectRef* GrSimpleTextureEffect::TestCreate(SkRandom* random,

    55                                                GrContext*,

    56                                                const GrDrawTargetCaps&,

    57                                                GrTexture* textures[]) {

    58     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :

    59                                       GrEffectUnitTest::kAlphaTextureIdx;

    60     static const SkShader::TileMode kTileModes[] = {

    61         SkShader::kClamp_TileMode,

    62         SkShader::kRepeat_TileMode,

    63         SkShader::kMirror_TileMode,

    64     };

    65     SkShader::TileMode tileModes[] = {

    66         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],

    67         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],

    68     };

    69     GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode :

    70                                                            GrTextureParams::kNone_FilterMode);

    72     static const GrCoordSet kCoordSets[] = {

    73         kLocal_GrCoordSet,

    74         kPosition_GrCoordSet

    75     };

    76     GrCoordSet coordSet = kCoordSets[random->nextULessThan(GR_ARRAY_COUNT(kCoordSets))];

    78     const SkMatrix& matrix = GrEffectUnitTest::TestMatrix(random);

    79     return GrSimpleTextureEffect::Create(textures[texIdx], matrix, coordSet);

    80 }

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