oculus1
annotate src/opengl.cc @ 21:ef4c9d8eeca7
added shaderless distortion method
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Wed, 02 Oct 2013 04:09:37 +0300 |
| parents | 3265970a7315 |
| children |
| rev | line source |
|---|---|
| nuclear@8 | 1 #include "opengl.h" |
| nuclear@9 | 2 #include <vmath/vmath.h> |
| nuclear@8 | 3 |
| nuclear@9 | 4 void load_matrix(const Matrix4x4 &m) |
| nuclear@8 | 5 { |
| nuclear@9 | 6 #ifdef SINGLE_PRECISION_MATH |
| nuclear@9 | 7 if(glLoadTransposeMatrixfARB) { |
| nuclear@9 | 8 glLoadTransposeMatrixfARB((float*)&m); |
| nuclear@9 | 9 } else { |
| nuclear@9 | 10 Matrix4x4 tmat = m.transposed(); |
| nuclear@9 | 11 glLoadMatrixf((float*)&tmat); |
| nuclear@9 | 12 } |
| nuclear@9 | 13 #else |
| nuclear@9 | 14 if(glLoadTransposeMatrixdARB) { |
| nuclear@9 | 15 glLoadTransposeMatrixdARB((double*)&m); |
| nuclear@9 | 16 } else { |
| nuclear@9 | 17 Matrix4x4 tmat = m.transposed(); |
| nuclear@9 | 18 glLoadMatrixd((double*)&tmat); |
| nuclear@9 | 19 } |
| nuclear@9 | 20 #endif |
| nuclear@9 | 21 } |
| nuclear@9 | 22 |
| nuclear@9 | 23 void mult_matrix(const Matrix4x4 &m) |
| nuclear@9 | 24 { |
| nuclear@9 | 25 #ifdef SINGLE_PRECISION_MATH |
| nuclear@9 | 26 if(glMultTransposeMatrixfARB) { |
| nuclear@9 | 27 glMultTransposeMatrixfARB((float*)&m); |
| nuclear@9 | 28 } else { |
| nuclear@9 | 29 Matrix4x4 tmat = m.transposed(); |
| nuclear@9 | 30 glMultMatrixf((float*)&tmat); |
| nuclear@9 | 31 } |
| nuclear@9 | 32 #else |
| nuclear@9 | 33 if(glMultTransposeMatrixdARB) { |
| nuclear@9 | 34 glMultTransposeMatrixdARB((double*)&m); |
| nuclear@9 | 35 } else { |
| nuclear@9 | 36 Matrix4x4 tmat = m.transposed(); |
| nuclear@9 | 37 glMultMatrixd((double*)&tmat); |
| nuclear@9 | 38 } |
| nuclear@8 | 39 #endif |
| nuclear@8 | 40 } |
| nuclear@8 | 41 |
| nuclear@8 | 42 const char *strglerr(int err) |
| nuclear@8 | 43 { |
| nuclear@8 | 44 static const char *errnames[] = { |
| nuclear@8 | 45 "GL_INVALID_ENUM", |
| nuclear@8 | 46 "GL_INVALID_VALUE", |
| nuclear@8 | 47 "GL_INVALID_OPERATION", |
| nuclear@8 | 48 "GL_STACK_OVERFLOW", |
| nuclear@8 | 49 "GL_STACK_UNDERFLOW", |
| nuclear@8 | 50 "GL_OUT_OF_MEMORY", |
| nuclear@8 | 51 "GL_INVALID_FRAMEBUFFER_OPERATION" |
| nuclear@8 | 52 }; |
| nuclear@8 | 53 |
| nuclear@8 | 54 if(!err) { |
| nuclear@8 | 55 return "GL_NO_ERROR"; |
| nuclear@8 | 56 } |
| nuclear@8 | 57 if(err < GL_INVALID_ENUM || err > GL_OUT_OF_MEMORY) { |
| nuclear@8 | 58 return "<invalid gl error>"; |
| nuclear@8 | 59 } |
| nuclear@8 | 60 return errnames[err - GL_INVALID_ENUM]; |
| nuclear@8 | 61 } |