diff options
Diffstat (limited to 'src/mesa/pipe/softpipe/sp_prim_setup.c')
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_prim_setup.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/sp_prim_setup.c b/src/mesa/pipe/softpipe/sp_prim_setup.c index 34e3bedb06f..8e43f5d04d3 100644 --- a/src/mesa/pipe/softpipe/sp_prim_setup.c +++ b/src/mesa/pipe/softpipe/sp_prim_setup.c @@ -306,11 +306,18 @@ static GLboolean setup_sort_vertices( struct setup_stage *setup, /** * Compute a0 for a constant-valued coefficient (GL_FLAT shading). + * The value value comes from vertex->data[slot][i]. + * The result will be put into setup->coef[slot].a0[i]. + * \param slot which attribute slot + * \param i which component of the slot (0..3) */ static void const_coeff( struct setup_stage *setup, GLuint slot, GLuint i ) { + assert(slot < FRAG_ATTRIB_MAX); + assert(i <= 3); + setup->coef[slot].dadx[i] = 0; setup->coef[slot].dady[i] = 0; @@ -333,6 +340,9 @@ static void tri_linear_coeff( struct setup_stage *setup, GLfloat a = setup->ebot.dy * majda - botda * setup->emaj.dy; GLfloat b = setup->emaj.dx * botda - majda * setup->ebot.dx; + assert(slot < FRAG_ATTRIB_MAX); + assert(i <= 3); + setup->coef[slot].dadx[i] = a * setup->oneoverarea; setup->coef[slot].dady[i] = b * setup->oneoverarea; @@ -379,6 +389,9 @@ static void tri_persp_coeff( struct setup_stage *setup, GLfloat a = setup->ebot.dy * majda - botda * setup->emaj.dy; GLfloat b = setup->emaj.dx * botda - majda * setup->ebot.dx; + assert(slot < FRAG_ATTRIB_MAX); + assert(i <= 3); + setup->coef[slot].dadx[i] = a * setup->oneoverarea; setup->coef[slot].dady[i] = b * setup->oneoverarea; setup->coef[slot].a0[i] = (mina - |