thirdparty/scummvm
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TINYGL: Changed the way vertices are transformed, increased performance (now it's comparable to the previous version and sometimes it performs even faster).

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This commit is contained in:
Stefano Musumeci 2014-06-09 19:53:40 +02:00
parent 6c7eaca2eb
commit f40cfb020c
4 changed files with 74 additions and 78 deletions
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22
graphics/tinygl/vertex.cpp
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@ -49,13 +49,13 @@ void gl_eval_viewport(GLContext *c) {
v = &c->viewport;
v->trans.X = ((float)(((v->xsize - 0.5) / 2.0) + v->xmin));
v->trans.Y = ((float)(((v->ysize - 0.5) / 2.0) + v->ymin));
v->trans.Z = ((float)(((zsize - 0.5) / 2.0) + ((1 << ZB_POINT_Z_FRAC_BITS)) / 2));
v->trans.X = (float)(((v->xsize - 0.5) / 2.0) + v->xmin);
v->trans.Y = (float)(((v->ysize - 0.5) / 2.0) + v->ymin);
v->trans.Z = (float)(((zsize - 0.5) / 2.0) + ((1 << ZB_POINT_Z_FRAC_BITS)) / 2);
v->scale.X = ((float)((v->xsize - 0.5) / 2.0));
v->scale.Y = ((float)(-(v->ysize - 0.5) / 2.0));
v->scale.Z = ((float)(-((zsize - 0.5) / 2.0)));
v->scale.X = (float)((v->xsize - 0.5) / 2.0);
v->scale.Y = (float)(-(v->ysize - 0.5) / 2.0);
v->scale.Z = (float)(-((zsize - 0.5) / 2.0));
}
void glopBegin(GLContext *c, GLParam *p) {
@ -135,16 +135,16 @@ static inline void gl_vertex_transform(GLContext *c, GLVertex *v) {
// eye coordinates needed for lighting
m = c->matrix_stack_ptr[0];
v->ec = m->transform3x4(v->coord);
m->transform3x4(v->coord,v->ec);
// projection coordinates
m = c->matrix_stack_ptr[1];
v->pc = m->transform(v->ec);
m->transform(v->ec, v->pc);
m = &c->matrix_model_view_inv;
n = &c->current_normal;
v->normal = m->transform3x3(*n);
m->transform3x3(*n, v->normal);
if (c->normalize_enabled) {
v->normal.normalize();
@ -154,7 +154,7 @@ static inline void gl_vertex_transform(GLContext *c, GLVertex *v) {
// NOTE: W = 1 is assumed
m = &c->matrix_model_projection;
v->pc = m->transform3x4(v->coord);
m->transform3x4(v->coord, v->pc);
if (c->matrix_model_projection_no_w_transform) {
v->pc.W = (m->_m[3][3]);
}
@ -209,7 +209,7 @@ void glopVertex(GLContext *c, GLParam *p) {
if (c->texture_2d_enabled) {
if (c->apply_texture_matrix) {
v->tex_coord = c->matrix_stack_ptr[2]->transform(c->current_tex_coord);
c->matrix_stack_ptr[2]->transform(c->current_tex_coord, v->tex_coord);
} else {
v->tex_coord = c->current_tex_coord;
}