erebus
annotate src/opengl.cc @ 18:09028848f276
- implemented Box object intersection
- implemented interactive camera manipulation
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 26 May 2014 23:34:12 +0300 |
| parents | |
| children |
| rev | line source |
|---|---|
| nuclear@0 | 1 #include "opengl.h" |
| nuclear@0 | 2 #include <vmath/vmath.h> |
| nuclear@0 | 3 |
| nuclear@0 | 4 |
| nuclear@0 | 5 |
| nuclear@0 | 6 void load_matrix(const Matrix4x4 &m) |
| nuclear@0 | 7 { |
| nuclear@0 | 8 #ifdef SINGLE_PRECISION_MATH |
| nuclear@0 | 9 if(glLoadTransposeMatrixfARB) { |
| nuclear@0 | 10 glLoadTransposeMatrixfARB((float*)&m); |
| nuclear@0 | 11 } else { |
| nuclear@0 | 12 Matrix4x4 tmat = m.transposed(); |
| nuclear@0 | 13 glLoadMatrixf((float*)&tmat); |
| nuclear@0 | 14 } |
| nuclear@0 | 15 #else |
| nuclear@0 | 16 if(glLoadTransposeMatrixdARB) { |
| nuclear@0 | 17 glLoadTransposeMatrixdARB((double*)&m); |
| nuclear@0 | 18 } else { |
| nuclear@0 | 19 Matrix4x4 tmat = m.transposed(); |
| nuclear@0 | 20 glLoadMatrixd((double*)&tmat); |
| nuclear@0 | 21 } |
| nuclear@0 | 22 #endif |
| nuclear@0 | 23 } |
| nuclear@0 | 24 |
| nuclear@0 | 25 void mult_matrix(const Matrix4x4 &m) |
| nuclear@0 | 26 { |
| nuclear@0 | 27 #ifdef SINGLE_PRECISION_MATH |
| nuclear@0 | 28 if(glMultTransposeMatrixfARB) { |
| nuclear@0 | 29 glMultTransposeMatrixfARB((float*)&m); |
| nuclear@0 | 30 } else { |
| nuclear@0 | 31 Matrix4x4 tmat = m.transposed(); |
| nuclear@0 | 32 glMultMatrixf((float*)&tmat); |
| nuclear@0 | 33 } |
| nuclear@0 | 34 #else |
| nuclear@0 | 35 if(glMultTransposeMatrixdARB) { |
| nuclear@0 | 36 glMultTransposeMatrixdARB((double*)&m); |
| nuclear@0 | 37 } else { |
| nuclear@0 | 38 Matrix4x4 tmat = m.transposed(); |
| nuclear@0 | 39 glMultMatrixd((double*)&tmat); |
| nuclear@0 | 40 } |
| nuclear@0 | 41 #endif |
| nuclear@0 | 42 } |
| nuclear@0 | 43 |
| nuclear@0 | 44 const char *strglerr(int err) |
| nuclear@0 | 45 { |
| nuclear@0 | 46 static const char *errnames[] = { |
| nuclear@0 | 47 "GL_INVALID_ENUM", |
| nuclear@0 | 48 "GL_INVALID_VALUE", |
| nuclear@0 | 49 "GL_INVALID_OPERATION", |
| nuclear@0 | 50 "GL_STACK_OVERFLOW", |
| nuclear@0 | 51 "GL_STACK_UNDERFLOW", |
| nuclear@0 | 52 "GL_OUT_OF_MEMORY", |
| nuclear@0 | 53 "GL_INVALID_FRAMEBUFFER_OPERATION" |
| nuclear@0 | 54 }; |
| nuclear@0 | 55 |
| nuclear@0 | 56 if(!err) { |
| nuclear@0 | 57 return "GL_NO_ERROR"; |
| nuclear@0 | 58 } |
| nuclear@0 | 59 if(err < GL_INVALID_ENUM || err > GL_OUT_OF_MEMORY) { |
| nuclear@0 | 60 return "<invalid gl error>"; |
| nuclear@0 | 61 } |
| nuclear@0 | 62 return errnames[err - GL_INVALID_ENUM]; |
| nuclear@0 | 63 } |