imagerepresentationgl.cpp 11.5 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
// ================================================================================================
// 
// This file is part of the CAMPVis Software Framework.
// 
// If not explicitly stated otherwise: Copyright (C) 2012, all rights reserved,
//      Christian Schulte zu Berge <christian.szb@in.tum.de>
//      Chair for Computer Aided Medical Procedures
//      Technische Universitt Mnchen
//      Boltzmannstr. 3, 85748 Garching b. Mnchen, Germany
// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
// 
// The licensing of this softare is not yet resolved. Until then, redistribution in source or
// binary forms outside the CAMP chair is not permitted, unless explicitly stated in legal form.
// However, the names of the original authors and the above copyright notice must retain in its
// original state in any case.
// 
// Legal disclaimer provided by the BSD license:
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// 
// ================================================================================================

#include "imagerepresentationgl.h"

#include "tgt/assert.h"
#include "tgt/shadermanager.h"
#include "tgt/textureunit.h"
#include "tgt/tgt_gl.h"

#include "core/datastructures/imagedata.h"
38
39
#include "core/datastructures/imagerepresentationdisk.h"
#include "core/datastructures/imagerepresentationlocal.h"
40
#include "core/datastructures/imagerepresentationrendertarget.h"
41
42
43
#ifdef CAMPVIS_HAS_MODULE_ITK
#include "modules/itk/core/genericimagerepresentationitk.h"
#endif
44
45
46
47
48

namespace campvis {

    const std::string ImageRepresentationGL::loggerCat_ = "CAMPVis.core.datastructures.ImageRepresentationGL";

49
50
51
52
53
54
55
56
57
58
59
60
    ImageRepresentationGL* ImageRepresentationGL::create(ImageData* parent, tgt::Texture* texture) {
        ImageRepresentationGL* toReturn = new ImageRepresentationGL(parent, texture);
        toReturn->addToParent();
        return toReturn;
    }

    ImageRepresentationGL* ImageRepresentationGL::create(ImageData* parent, const WeaklyTypedPointer& wtp) {
        ImageRepresentationGL* toReturn = new ImageRepresentationGL(parent, wtp);
        toReturn->addToParent();
        return toReturn;
    }

61
    ImageRepresentationGL::ImageRepresentationGL(ImageData* parent, tgt::Texture* texture)
62
        : GenericAbstractImageRepresentation<ImageRepresentationGL>(parent)
63
64
65
66
67
        , _texture(texture)
    {
        tgtAssert(texture != 0, "Given texture must not be 0.");
    }

68
    ImageRepresentationGL::ImageRepresentationGL(ImageData* parent, const WeaklyTypedPointer& wtp) 
69
        : GenericAbstractImageRepresentation<ImageRepresentationGL>(parent)
70
71
72
73
74
75
76
77
    {
        createTexture(wtp);
    }

    ImageRepresentationGL::~ImageRepresentationGL() {
        delete _texture;
    }

78
79
80
81
82
83
84
    ImageRepresentationGL* ImageRepresentationGL::tryConvertFrom(const AbstractImageRepresentation* source) {
        if (source == 0)
            return 0;

        // test source image type via dynamic cast
        if (const ImageRepresentationDisk* tester = dynamic_cast<const ImageRepresentationDisk*>(source)) {
            WeaklyTypedPointer wtp = tester->getImageData();
85
86
87
88
89
90

            if (wtp._pointer == 0) {
                LERROR("Could not load image from disk during conversion.");
                return 0;
            }

91
            ImageRepresentationGL* toReturn = ImageRepresentationGL::create(const_cast<ImageData*>(tester->getParent()), wtp);
92
93
94
95
            delete wtp._pointer;
            return toReturn;
        }
        else if (const ImageRepresentationLocal* tester = dynamic_cast<const ImageRepresentationLocal*>(source)) {
96
            ImageRepresentationGL* toReturn = ImageRepresentationGL::create(const_cast<ImageData*>(tester->getParent()), tester->getWeaklyTypedPointer());
97
98
            return toReturn;
        }
99
100
#ifdef CAMPVIS_HAS_MODULE_ITK
        else if (const AbstractImageRepresentationItk* tester = dynamic_cast<const AbstractImageRepresentationItk*>(source)) {
101
            ImageRepresentationGL* toReturn = ImageRepresentationGL::create(const_cast<ImageData*>(tester->getParent()), tester->getWeaklyTypedPointer());
102
103
104
            return toReturn;
        }
#endif
105
106
107
108

        return 0;
    }

109
    ImageRepresentationGL* ImageRepresentationGL::clone(ImageData* newParent) const {
110
111
        GLubyte* data = _texture->downloadTextureToBuffer();
        WeaklyTypedPointer wtp(WeaklyTypedPointer::baseType(_texture->getDataType()), WeaklyTypedPointer::numChannels(_texture->getFormat()), data);
112
        ImageRepresentationGL* toReturn = ImageRepresentationGL::create(newParent, wtp);
113
114
115
116
        delete data;
        return toReturn;
    }

117
    ImageRepresentationGL* ImageRepresentationGL::getSubImage(ImageData* parent, const tgt::svec3& llf, const tgt::svec3& urb) const {
118
        // TODO: implement
119
        //LWARNING("ImageRepresentationGL::getSubImage() not implemented!");
120
121
122
123
124
125
        return 0;
    }

    void ImageRepresentationGL::createTexture(const WeaklyTypedPointer& wtp) {
        tgtAssert(wtp._pointer != 0, "Pointer to image data must not be 0!");

schultezub's avatar
schultezub committed
126
        _texture = new tgt::Texture(reinterpret_cast<GLubyte*>(wtp._pointer), getSize(), wtp.getGlFormat(), wtp.getGlInternalFormat(), wtp.getGlDataType(), tgt::Texture::LINEAR);
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
        setupAndUploadTexture(_texture, wtp.isInteger(), wtp.isSigned());

    }

    void ImageRepresentationGL::setupAndUploadTexture(tgt::Texture* texture, bool isInteger, bool isSigned) {
        // Set OpenGL pixel alignment to 1 to avoid problems with NPOT textures
        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

        switch (getDimensionality()) {
            case 1:
                _texture->setType(GL_TEXTURE_1D);
                break;
            case 2:
                _texture->setType(GL_TEXTURE_2D);
                break;
            case 3:
                _texture->setType(GL_TEXTURE_3D);
                break;
            default:
                tgtAssert(false, "Unsupported dimensionality of image.");
                break;
        }

        tgt::TextureUnit tempUnit;
        tempUnit.activate();
        _texture->bind();

        // map signed integer types from [-1.0:1.0] to [0.0:1.0] in order to avoid clamping of negative values
        if (isInteger && isSigned) {
            glPixelTransferf(GL_RED_SCALE,   0.5f);
            glPixelTransferf(GL_GREEN_SCALE, 0.5f);
            glPixelTransferf(GL_BLUE_SCALE,  0.5f);
            glPixelTransferf(GL_ALPHA_SCALE, 0.5f);

            glPixelTransferf(GL_RED_BIAS,    0.5f);
            glPixelTransferf(GL_GREEN_BIAS,  0.5f);
            glPixelTransferf(GL_BLUE_BIAS,   0.5f);
            glPixelTransferf(GL_ALPHA_BIAS,  0.5f);

            //_mappingInformation.setRealWorldMapping(LinearMapping<float>(.5f, .5f));
        }

        _texture->uploadTexture();
        _texture->setWrapping(tgt::Texture::CLAMP);

        if (isInteger && isSigned) {
173
174
175
176
177
178
179
180
181
182
            // restore default
            glPixelTransferf(GL_RED_SCALE,   1.0f);
            glPixelTransferf(GL_GREEN_SCALE, 1.0f);
            glPixelTransferf(GL_BLUE_SCALE,  1.0f);
            glPixelTransferf(GL_ALPHA_SCALE, 1.0f);

            glPixelTransferf(GL_RED_BIAS,    0.0f);
            glPixelTransferf(GL_GREEN_BIAS,  0.0f);
            glPixelTransferf(GL_BLUE_BIAS,   0.0f);
            glPixelTransferf(GL_ALPHA_BIAS,  0.0f);
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
        }

        // revoke ownership of local pixel data from the texture
        _texture->setPixelData(0);

        tgt::TextureUnit::setZeroUnit();
        LGL_ERROR;
    }

    void ImageRepresentationGL::bind() const {
        _texture->bind();
    }

    void ImageRepresentationGL::bind(const tgt::TextureUnit& texUnit) const {
        texUnit.activate();
        _texture->bind();
    }

201
    void ImageRepresentationGL::bind(tgt::Shader* shader, const tgt::TextureUnit& texUnit, const std::string& texUniform /*= "_texture"*/, const std::string& texParamsUniform) const {
202
203
204
205
206
207
208
209
210
211
        bind(texUnit);
        bool tmp = shader->getIgnoreUniformLocationError();
        shader->setIgnoreUniformLocationError(true);

        switch (getDimensionality()) {
            case 1:
                LERROR("Setting um 1D texture uniforms currently not implemented - you probably wanna do that yourself...");
                break;

            case 2:
212
213
214
215
                shader->setUniform(texUniform, texUnit.getUnitNumber());
                shader->setUniform(texParamsUniform + "._size", tgt::vec2(getSize().xy()));
                shader->setUniform(texParamsUniform + "._sizeRCP", tgt::vec2(1.f) / tgt::vec2(getSize().xy()));
                shader->setUniform(texParamsUniform + "._numChannels", static_cast<int>(_parent->getNumChannels()));
216
217
218
                break;

            case 3:
219
220
221
222
223
224
225
226
                shader->setUniform(texUniform, texUnit.getUnitNumber());
                shader->setUniform(texParamsUniform + "._size", tgt::vec3(getSize()));
                shader->setUniform(texParamsUniform + "._sizeRCP", tgt::vec3(1.f) / tgt::vec3(getSize()));
                shader->setUniform(texParamsUniform + "._numChannels", static_cast<int>(_parent->getNumChannels()));
                shader->setUniform(texParamsUniform + "._voxelSize", _parent->getMappingInformation().getVoxelSize());
                shader->setUniform(texParamsUniform + "._voxelSizeRCP", tgt::vec3(1.f) / _parent->getMappingInformation().getVoxelSize());
                shader->setUniform(texParamsUniform + "._textureToWorldMatrix", _parent->getMappingInformation().getTextureToWorldMatrix());
                shader->setUniform(texParamsUniform + "._realWorldMapping", tgt::vec2(_parent->getMappingInformation().getRealWorldMapping()._shift, _parent->getMappingInformation().getRealWorldMapping()._scale));
227
228
229
230
231
232
233
                break;

            default:
                tgtAssert(false, "Should not reach this!");
                break;
        }
        shader->setIgnoreUniformLocationError(tmp);
234
        LGL_ERROR;
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
    }

    const tgt::Texture* ImageRepresentationGL::getTexture() const {
        return _texture;
    }

    size_t ImageRepresentationGL::getLocalMemoryFootprint() const {
        size_t sum = 0;
        if (_texture != 0) {
            sum += sizeof(tgt::Texture);
            if (_texture->getPixelData() != 0) {
                sum += _texture->getBpp() + _texture->getArraySize();
            }
        }

        return sizeof(*this) + sum;
    }

    size_t ImageRepresentationGL::getVideoMemoryFootprint() const {
        return _texture->getSizeOnGPU();
    }

257
258
259
260
261
262
263
    const WeaklyTypedPointer ImageRepresentationGL::getWeaklyTypedPointer() const {
        if (_texture->getPixelData() == 0) {
            _texture->downloadTexture();
        }
        return WeaklyTypedPointer(WeaklyTypedPointer::baseType(_texture->getDataType()), _texture->getNumChannels(), _texture->getPixelData());
    }

264

265
}