bloboland

annotate src/texture.cc @ 4:9021a906c5d3

find changesets by author, revision, files, or words in the commit message
lots of stuff
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 18 Dec 2012 06:13:09 +0200
parents a39c301cdcce
children 2f4406cc341e
rev   line source
nuclear@1 1 #include "opengl.h"
nuclear@1 2 #include "texture.h"
nuclear@1 3
nuclear@1 4 void bind_texture(const Texture *tex, int texunit)
nuclear@1 5 {
nuclear@3 6 static const Texture *cur_tex[8];
nuclear@1 7
nuclear@3 8 if(tex == cur_tex[texunit]) {
nuclear@1 9 return;
nuclear@1 10 }
nuclear@1 11
nuclear@1 12 glActiveTexture(GL_TEXTURE0 + texunit);
nuclear@1 13 if(tex) {
nuclear@1 14 glEnable(tex->type);
nuclear@1 15 glBindTexture(tex->type, tex->tex);
nuclear@1 16 } else {
nuclear@3 17 glDisable(cur_tex[texunit]->type);
nuclear@1 18 }
nuclear@1 19 glActiveTexture(GL_TEXTURE0);
nuclear@1 20
nuclear@3 21 cur_tex[texunit] = tex;
nuclear@1 22 }
nuclear@1 23
nuclear@1 24
nuclear@1 25 Texture::Texture()
nuclear@1 26 {
nuclear@1 27 type = 0;
nuclear@1 28
nuclear@1 29 size[0] = size[1] = size[2] = 0;
nuclear@1 30
nuclear@1 31 glGenTextures(1, &tex);
nuclear@1 32 }
nuclear@1 33
nuclear@1 34 Texture::~Texture()
nuclear@1 35 {
nuclear@1 36 if(tex) {
nuclear@1 37 glDeleteTextures(1, &tex);
nuclear@1 38 }
nuclear@1 39 }
nuclear@1 40
nuclear@4 41 void Texture::set_filtering(unsigned int min_filter, unsigned int mag_filter)
nuclear@4 42 {
nuclear@4 43 if(mag_filter == 0) {
nuclear@4 44 mag_filter = min_filter;
nuclear@4 45 }
nuclear@4 46
nuclear@4 47 glBindTexture(type, tex);
nuclear@4 48 glTexParameteri(type, GL_TEXTURE_MIN_FILTER, min_filter);
nuclear@4 49 glTexParameteri(type, GL_TEXTURE_MAG_FILTER, mag_filter);
nuclear@4 50 }
nuclear@4 51
nuclear@4 52 void Texture::set_wrapping(unsigned int wrap)
nuclear@4 53 {
nuclear@4 54 glBindTexture(type, tex);
nuclear@4 55 glTexParameteri(type, GL_TEXTURE_WRAP_S, wrap);
nuclear@4 56 glTexParameteri(type, GL_TEXTURE_WRAP_T, wrap);
nuclear@4 57 glTexParameteri(type, GL_TEXTURE_WRAP_R, wrap);
nuclear@4 58 }
nuclear@4 59
nuclear@1 60 int Texture::get_size(int idx) const
nuclear@1 61 {
nuclear@1 62 return idx >= 0 && idx < 3 ? size[idx] : 0;
nuclear@1 63 }
nuclear@1 64
nuclear@4 65 Texture1D::Texture1D()
nuclear@4 66 {
nuclear@4 67 type = GL_TEXTURE_1D;
nuclear@4 68
nuclear@4 69 glBindTexture(type, tex);
nuclear@4 70 glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@4 71 glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@4 72 }
nuclear@4 73
nuclear@4 74 void Texture1D::create(int sz, float *data)
nuclear@4 75 {
nuclear@4 76 glBindTexture(type, tex);
nuclear@4 77 glTexImage1D(type, 0, GL_RGBA, sz, 0, GL_RGBA, GL_FLOAT, data);
nuclear@4 78
nuclear@4 79 size[0] = sz;
nuclear@4 80 }
nuclear@4 81
nuclear@4 82 void Texture1D::update(float *data)
nuclear@4 83 {
nuclear@4 84 glBindTexture(type, tex);
nuclear@4 85 glTexSubImage1D(type, 0, 0, size[0], GL_RGBA, GL_FLOAT, data);
nuclear@4 86 }
nuclear@4 87
nuclear@1 88 Texture2D::Texture2D()
nuclear@1 89 {
nuclear@1 90 type = GL_TEXTURE_2D;
nuclear@1 91
nuclear@1 92 glBindTexture(type, tex);
nuclear@1 93 glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@1 94 glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@1 95 }
nuclear@1 96
nuclear@1 97 void Texture2D::create(int xsz, int ysz, float *data)
nuclear@1 98 {
nuclear@1 99 glBindTexture(type, tex);
nuclear@1 100 glTexImage2D(type, 0, GL_RGBA, xsz, ysz, 0, GL_RGBA, GL_FLOAT, data);
nuclear@1 101
nuclear@1 102 size[0] = xsz;
nuclear@1 103 size[1] = ysz;
nuclear@1 104 }
nuclear@1 105
nuclear@3 106 void Texture2D::update(float *data)
nuclear@3 107 {
nuclear@3 108 glBindTexture(type, tex);
nuclear@3 109 glTexSubImage2D(type, 0, 0, 0, size[0], size[1], GL_RGBA, GL_FLOAT, data);
nuclear@3 110 }
nuclear@3 111
nuclear@1 112 Texture3D::Texture3D()
nuclear@1 113 {
nuclear@1 114 type = GL_TEXTURE_3D;
nuclear@1 115
nuclear@1 116 glBindTexture(type, tex);
nuclear@1 117 glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@1 118 glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@3 119 glTexParameteri(type, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
nuclear@3 120 glTexParameteri(type, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
nuclear@3 121 glTexParameteri(type, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
nuclear@1 122 }
nuclear@1 123
nuclear@1 124 void Texture3D::create(int xsz, int ysz, int zsz, float *data)
nuclear@1 125 {
nuclear@1 126 glBindTexture(type, tex);
nuclear@1 127 glTexImage3D(type, 0, GL_RGBA, xsz, ysz, zsz, 0, GL_RGBA, GL_FLOAT, data);
nuclear@1 128
nuclear@1 129 size[0] = xsz;
nuclear@1 130 size[1] = ysz;
nuclear@1 131 size[2] = zsz;
nuclear@1 132 }
nuclear@3 133
nuclear@3 134 void Texture3D::update(float *data)
nuclear@3 135 {
nuclear@3 136 glBindTexture(type, tex);
nuclear@3 137 glTexSubImage3D(type, 0, 0, 0, 0, size[0], size[1], size[2], GL_RGBA, GL_FLOAT, data);
nuclear@3 138 }