| 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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| 2 | #include <vr3d/vrTexture1D.h> |
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| 3 | |
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| 4 | #include <string.h> |
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| 5 | #include <math.h> |
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| 6 | #include <valarray> |
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| 7 | |
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| 8 | #ifdef _WIN32 |
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| 9 | inline unsigned int log2(unsigned int x) |
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| 10 | { |
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| 11 | unsigned int i = 0; |
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| 12 | while ( ( x = ( x >> 1 ) ) != 0 ) i++; |
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| 13 | return i; |
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| 14 | } |
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| 15 | #endif |
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| 16 | |
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| 17 | vrTexture1D::vrTexture1D(bool depth): |
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| 18 | _width(0) |
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| 19 | { |
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| 20 | _target = TT_TEXTURE_1D; |
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| 21 | _wrapS = TW_CLAMP_TO_EDGE; |
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| 22 | } |
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| 23 | |
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| 24 | vrTexture1D::~vrTexture1D() |
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| 25 | { |
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| 26 | } |
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| 27 | |
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| 28 | void vrTexture1D::setPixels(COLORFORMAT colorFormat, DATATYPE type, |
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| 29 | int width, void *data) |
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| 30 | { |
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| 31 | setPixels(TT_TEXTURE_1D, colorFormat, colorFormat, type, width, data); |
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| 32 | } |
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| 33 | |
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| 34 | void vrTexture1D::setPixels(TEXTARGET target, COLORFORMAT internalColorFormat, |
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| 35 | COLORFORMAT colorFormat, DATATYPE type, |
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| 36 | int width, void* data) |
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| 37 | { |
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| 38 | _target = target; |
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| 39 | _width = width; |
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| 40 | _type = type; |
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| 41 | _internalColorFormat = internalColorFormat; |
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| 42 | _colorFormat = colorFormat; |
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| 43 | _compCount = GetNumComponent(_colorFormat); |
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| 44 | |
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| 45 | if (_objectID) |
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| 46 | { |
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| 47 | glDeleteTextures(1, &_objectID); |
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| 48 | } |
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| 49 | |
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| 50 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
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| 51 | glGenTextures(1, &_objectID); |
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| 52 | glBindTexture(_target, _objectID); |
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| 53 | |
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| 54 | glTexParameteri(_target, GL_TEXTURE_MAG_FILTER, _magFilter); |
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| 55 | glTexParameteri(_target, GL_TEXTURE_MIN_FILTER, _minFilter); |
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| 56 | glTexParameteri(_target, GL_TEXTURE_WRAP_S, _wrapS); |
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| 57 | |
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| 58 | glTexImage1D(_target, 0, _internalColorFormat, _width, 0, _colorFormat, _type, data); |
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| 59 | } |
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| 60 | |
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| 61 | void vrTexture1D::updatePixels(void *data) |
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| 62 | { |
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| 63 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
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| 64 | glBindTexture(_target, _objectID); |
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| 65 | glTexParameteri(_target, GL_TEXTURE_WRAP_S, _wrapS); |
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| 66 | glTexParameteri(_target, GL_TEXTURE_MAG_FILTER, _magFilter); |
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| 67 | glTexParameteri(_target, GL_TEXTURE_MIN_FILTER, _minFilter); |
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| 68 | glTexImage1D(_target, 0, _internalColorFormat, _width, 0, _colorFormat, _type, data); |
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| 69 | } |
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