diff options
Diffstat (limited to 'src/mesa/math/m_xform.c')
-rw-r--r-- | src/mesa/math/m_xform.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/src/mesa/math/m_xform.c b/src/mesa/math/m_xform.c index fdc8abd434..369f2c6e95 100644 --- a/src/mesa/math/m_xform.c +++ b/src/mesa/math/m_xform.c @@ -40,7 +40,6 @@ #include "m_matrix.h" #include "m_translate.h" #include "m_xform.h" -#include "mathmod.h" #ifdef DEBUG_MATH @@ -97,99 +96,6 @@ transform_func *_mesa_transform_tab[5]; #undef ARGS - - -GLvector4f *_mesa_project_points( GLvector4f *proj_vec, - const GLvector4f *clip_vec ) -{ - const GLuint stride = clip_vec->stride; - const GLfloat *from = (GLfloat *)clip_vec->start; - const GLuint count = clip_vec->count; - GLfloat (*vProj)[4] = (GLfloat (*)[4])proj_vec->start; - GLuint i; - - for (i = 0 ; i < count ; i++, STRIDE_F(from, stride)) - { - GLfloat oow = 1.0F / from[3]; - vProj[i][3] = oow; - vProj[i][0] = from[0] * oow; - vProj[i][1] = from[1] * oow; - vProj[i][2] = from[2] * oow; - } - - proj_vec->flags |= VEC_SIZE_4; - proj_vec->size = 3; - proj_vec->count = clip_vec->count; - return proj_vec; -} - - - - - - -/* - * Transform a 4-element row vector (1x4 matrix) by a 4x4 matrix. This - * function is used for transforming clipping plane equations and spotlight - * directions. - * Mathematically, u = v * m. - * Input: v - input vector - * m - transformation matrix - * Output: u - transformed vector - */ -void _mesa_transform_vector( GLfloat u[4], const GLfloat v[4], const GLfloat m[16] ) -{ - GLfloat v0=v[0], v1=v[1], v2=v[2], v3=v[3]; -#define M(row,col) m[row + col*4] - u[0] = v0 * M(0,0) + v1 * M(1,0) + v2 * M(2,0) + v3 * M(3,0); - u[1] = v0 * M(0,1) + v1 * M(1,1) + v2 * M(2,1) + v3 * M(3,1); - u[2] = v0 * M(0,2) + v1 * M(1,2) + v2 * M(2,2) + v3 * M(3,2); - u[3] = v0 * M(0,3) + v1 * M(1,3) + v2 * M(2,3) + v3 * M(3,3); -#undef M -} - - -/* Useful for one-off point transformations, as in clipping. - * Note that because the matrix isn't analysed we do too many - * multiplies, and that the result is always 4-clean. - */ -void _mesa_transform_point_sz( GLfloat Q[4], const GLfloat M[16], - const GLfloat P[4], GLuint sz ) -{ - if (Q == P) - return; - - if (sz == 4) - { - Q[0] = M[0] * P[0] + M[4] * P[1] + M[8] * P[2] + M[12] * P[3]; - Q[1] = M[1] * P[0] + M[5] * P[1] + M[9] * P[2] + M[13] * P[3]; - Q[2] = M[2] * P[0] + M[6] * P[1] + M[10] * P[2] + M[14] * P[3]; - Q[3] = M[3] * P[0] + M[7] * P[1] + M[11] * P[2] + M[15] * P[3]; - } - else if (sz == 3) - { - Q[0] = M[0] * P[0] + M[4] * P[1] + M[8] * P[2] + M[12]; - Q[1] = M[1] * P[0] + M[5] * P[1] + M[9] * P[2] + M[13]; - Q[2] = M[2] * P[0] + M[6] * P[1] + M[10] * P[2] + M[14]; - Q[3] = M[3] * P[0] + M[7] * P[1] + M[11] * P[2] + M[15]; - } - else if (sz == 2) - { - Q[0] = M[0] * P[0] + M[4] * P[1] + M[12]; - Q[1] = M[1] * P[0] + M[5] * P[1] + M[13]; - Q[2] = M[2] * P[0] + M[6] * P[1] + M[14]; - Q[3] = M[3] * P[0] + M[7] * P[1] + M[15]; - } - else if (sz == 1) - { - Q[0] = M[0] * P[0] + M[12]; - Q[1] = M[1] * P[0] + M[13]; - Q[2] = M[2] * P[0] + M[14]; - Q[3] = M[3] * P[0] + M[15]; - } -} - - /* * This is called only once. It initializes several tables with pointers * to optimized transformation functions. This is where we can test for |