[2757] | 1 | #include "Texture.h"
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[2768] | 2 | #include "glInterface.h"
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| 3 | #include "common.h"
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| 4 |
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[2757] | 5 | #include <IL/il.h>
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| 6 | #include <assert.h>
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| 7 | #include <iostream>
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| 8 |
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| 9 |
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[2776] | 10 | namespace CHCDemoEngine
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[2757] | 11 | {
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| 12 |
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| 13 | using namespace std;
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| 14 |
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| 15 |
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| 16 | void startil()
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| 17 | {
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| 18 | ilInit();
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| 19 | assert(ilGetError() == IL_NO_ERROR);
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| 20 | }
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| 21 |
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| 22 |
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| 23 | void stopil()
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| 24 | {
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| 25 | ilShutDown();
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| 26 | assert(ilGetError() == IL_NO_ERROR);
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| 27 | }
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| 28 |
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| 29 |
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| 30 | Texture::Texture(const std::string &filename):
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[2846] | 31 | mWidth(0),
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| 32 | mHeight(0),
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| 33 | mFormat(0),
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| 34 | mImage(NULL),
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| 35 | mTexId(-1),
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| 36 | mName(filename),
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| 37 | mBoundaryModeS(REPEAT),
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[2850] | 38 | mBoundaryModeT(REPEAT),
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| 39 | mUseMipMap(true)
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[2757] | 40 | {
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| 41 | startil();
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[2769] | 42 |
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| 43 | if (!ilLoadImage(ILstring(filename.c_str())))
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[2757] | 44 | {
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[2769] | 45 | cerr << "Image load error " << ilGetError() << ": " << filename << endl;
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[2757] | 46 | }
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| 47 | else
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| 48 | {
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| 49 | mWidth = ilGetInteger(IL_IMAGE_WIDTH);
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| 50 | mHeight = ilGetInteger(IL_IMAGE_HEIGHT);
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| 51 |
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| 52 | mFormat = FORMAT_RGBA;
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[2768] | 53 | mByteSize = mHeight * GetRowLength();
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[2757] | 54 | mImage = malloc(GetByteSize());
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| 55 |
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[2768] | 56 | Debug << "successfully loaded texture " << filename << " w " << mWidth << " h " << mHeight << endl;
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| 57 |
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[2757] | 58 | ilCopyPixels(0, 0, 0, mWidth, mHeight, 1, IL_RGBA, IL_UNSIGNED_BYTE, mImage);
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| 59 | assert(ilGetError() == IL_NO_ERROR);
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| 60 | }
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| 61 |
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| 62 | stopil();
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| 63 | }
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| 64 |
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| 65 |
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| 66 | void Texture::Create()
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| 67 | {
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| 68 | glEnable(GL_TEXTURE_2D);
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[2825] | 69 |
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[2757] | 70 | glGenTextures(1, &mTexId);
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| 71 | glBindTexture(GL_TEXTURE_2D, mTexId);
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[2768] | 72 |
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[2825] | 73 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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[2845] | 74 |
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[2846] | 75 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 4);
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[2845] | 76 |
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[2846] | 77 | int glWrapModeS = (mBoundaryModeS == REPEAT) ? GL_REPEAT : GL_CLAMP_TO_EDGE;
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| 78 | int glWrapModeT = (mBoundaryModeT == REPEAT) ? GL_REPEAT : GL_CLAMP_TO_EDGE;
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[2757] | 79 |
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[2846] | 80 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glWrapModeS);
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| 81 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glWrapModeT);
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| 82 |
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[2850] | 83 | if (mUseMipMap)
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| 84 | {
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| 85 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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| 86 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
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| 87 | }
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| 88 | else
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| 89 | {
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| 90 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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| 91 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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| 92 | }
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| 93 |
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[2865] | 94 | if (!mUseMipMap)
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| 95 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, mWidth, mHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, mImage);
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| 96 | else
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[2850] | 97 | gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, mWidth, mHeight, GL_RGBA, GL_UNSIGNED_BYTE, mImage);
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[2825] | 98 |
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| 99 | glBindTexture(GL_TEXTURE_2D, 0);
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[2757] | 100 | }
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| 101 |
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| 102 |
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| 103 | int Texture::GetFormat() const
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| 104 | {
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| 105 | return mFormat;
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| 106 | }
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| 107 |
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| 108 |
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| 109 | int Texture::GetWidth() const
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| 110 | {
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| 111 | return mWidth;
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| 112 | }
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| 113 |
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| 114 |
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| 115 | int Texture::GetHeight() const
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| 116 | {
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| 117 | return mHeight;
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| 118 | }
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| 119 |
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| 120 |
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| 121 | void *Texture::GetImage() const
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| 122 | {
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| 123 | return mImage;
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| 124 | }
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| 125 |
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| 126 |
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| 127 | Texture::~Texture()
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| 128 | {
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[2817] | 129 | glDeleteTextures(1, &mTexId);
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[2757] | 130 | free(mImage);
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| 131 | }
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| 132 |
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| 133 |
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| 134 | std::string Texture::GetName() const
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| 135 | {
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| 136 | return mName;
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| 137 | }
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| 138 |
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| 139 |
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| 140 | int Texture::GetRowLength() const
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| 141 | {
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| 142 | if (mFormat == FORMAT_RGBA)
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| 143 | return mWidth * 4 * sizeof (unsigned char);
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| 144 | else
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| 145 | return mWidth * 3 * sizeof (unsigned char);
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| 146 | }
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| 147 |
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| 148 |
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| 149 | int Texture::GetPixelSize() const
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| 150 | {
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| 151 | if (mFormat == FORMAT_RGBA)
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| 152 | return 4 * sizeof(unsigned char);
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| 153 | else
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| 154 | return 3 * sizeof(unsigned char);
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| 155 | }
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| 156 |
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| 157 |
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| 158 | void Texture::Bind() const
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| 159 | {
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| 160 | glBindTexture(GL_TEXTURE_2D, mTexId);
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| 161 | }
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| 162 |
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[2850] | 163 |
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| 164 |
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| 165 |
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[2757] | 166 | } |
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