108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "GrTextureAccess.h"
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#include "GrColor.h"
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#include "GrTexture.h"
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GrTextureAccess::GrTextureAccess() {
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#ifdef SK_DEBUG
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memcpy(fSwizzle, "void", 5);
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fSwizzleMask = 0xbeeffeed;
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#endif
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}
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GrTextureAccess::GrTextureAccess(GrTexture* texture, const GrTextureParams& params) {
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this->reset(texture, params);
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}
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GrTextureAccess::GrTextureAccess(GrTexture* texture,
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GrTextureParams::FilterMode filterMode,
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SkShader::TileMode tileXAndY) {
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this->reset(texture, filterMode, tileXAndY);
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}
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GrTextureAccess::GrTextureAccess(GrTexture* texture,
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const char* swizzle,
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const GrTextureParams& params) {
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this->reset(texture, swizzle, params);
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}
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GrTextureAccess::GrTextureAccess(GrTexture* texture,
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const char* swizzle,
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GrTextureParams::FilterMode filterMode,
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SkShader::TileMode tileXAndY) {
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this->reset(texture, swizzle, filterMode, tileXAndY);
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}
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void GrTextureAccess::reset(GrTexture* texture,
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const char* swizzle,
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const GrTextureParams& params) {
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SkASSERT(texture);
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SkASSERT(strlen(swizzle) >= 1 && strlen(swizzle) <= 4);
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fParams = params;
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fTexture.set(SkRef(texture), kRead_GrIOType);
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this->setSwizzle(swizzle);
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}
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void GrTextureAccess::reset(GrTexture* texture,
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const char* swizzle,
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GrTextureParams::FilterMode filterMode,
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SkShader::TileMode tileXAndY) {
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SkASSERT(texture);
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SkASSERT(strlen(swizzle) >= 1 && strlen(swizzle) <= 4);
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fParams.reset(tileXAndY, filterMode);
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fTexture.set(SkRef(texture), kRead_GrIOType);
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this->setSwizzle(swizzle);
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}
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void GrTextureAccess::reset(GrTexture* texture,
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const GrTextureParams& params) {
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SkASSERT(texture);
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fTexture.set(SkRef(texture), kRead_GrIOType);
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fParams = params;
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memcpy(fSwizzle, "rgba", 5);
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fSwizzleMask = kRGBA_GrColorComponentFlags;
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}
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void GrTextureAccess::reset(GrTexture* texture,
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GrTextureParams::FilterMode filterMode,
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SkShader::TileMode tileXAndY) {
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SkASSERT(texture);
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fTexture.set(SkRef(texture), kRead_GrIOType);
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fParams.reset(tileXAndY, filterMode);
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memcpy(fSwizzle, "rgba", 5);
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fSwizzleMask = kRGBA_GrColorComponentFlags;
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}
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void GrTextureAccess::setSwizzle(const char* swizzle) {
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fSwizzleMask = 0;
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memset(fSwizzle, '\0', 5);
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for (int i = 0; i < 4 && '\0' != swizzle[i]; ++i) {
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fSwizzle[i] = swizzle[i];
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switch (swizzle[i]) {
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case 'r':
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fSwizzleMask |= kR_GrColorComponentFlag;
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break;
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case 'g':
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fSwizzleMask |= kG_GrColorComponentFlag;
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break;
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case 'b':
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fSwizzleMask |= kB_GrColorComponentFlag;
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break;
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case 'a':
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fSwizzleMask |= kA_GrColorComponentFlag;
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break;
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default:
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SkFAIL("Unexpected swizzle string character.");
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break;
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}
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}
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}
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