kimcinoo
/
efl
forked from enlightenment/efl
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Use display list for OpenGL polygons implementation. This improve speed on 

my computer in expedite test bench from 400 to 650.


SVN revision: 34795
This commit is contained in:
Cedric BAIL 2008-06-10 12:18:54 +00:00
parent e2aa481463
commit 0de14ee3ef
2 changed files with 56 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
legacy/evas/src/modules/engines/gl_common/evas_gl_common.h
View File

@ -133,6 +133,8 @@ struct _Evas_GL_Image
struct _Evas_GL_Polygon
{
Evas_List *points;
GLuint dl;
Evas_Bool changed : 1;
};
struct _Evas_GL_Polygon_Point

92
legacy/evas/src/modules/engines/gl_common/evas_gl_polygon.c
View File

@ -14,6 +14,7 @@ evas_gl_common_poly_point_add(Evas_GL_Polygon *poly, int x, int y)
pt->x = x;
pt->y = y;
poly->points = evas_list_append(poly->points, pt);
poly->changed = 1;
return poly;
}
@ -29,6 +30,7 @@ evas_gl_common_poly_points_clear(Evas_GL_Polygon *poly)
poly->points = evas_list_remove(poly->points, pt);
free(pt);
}
if (poly->dl > 0) glDeleteLists(poly->dl, 1);
free(poly);
return NULL;
}
@ -106,48 +108,62 @@ evas_gl_common_poly_draw(Evas_GL_Context *gc, Evas_GL_Polygon *poly)
evas_gl_common_context_read_buf_set(gc, GL_BACK);
evas_gl_common_context_write_buf_set(gc, GL_BACK);
if (poly->changed || poly->dl <= 0)
{
if (poly->dl > 0) glDeleteLists(poly->dl, 1);
poly->dl = glGenLists(1);
glNewList(poly->dl, GL_COMPILE_AND_EXECUTE);
#ifdef GLU_TESS
if (!tess)
{
tess = gluNewTess();
if (!tess)
{
tess = gluNewTess();
gluTessCallback(tess, GLU_TESS_BEGIN, _evas_gl_tess_begin_cb);
gluTessCallback(tess, GLU_TESS_END, _evas_gl_tess_end_cb);
gluTessCallback(tess, GLU_TESS_ERROR, _evas_gl_tess_error_cb);
gluTessCallback(tess, GLU_TESS_VERTEX, _evas_gl_tess_vertex_cb);
gluTessCallback(tess, GLU_TESS_COMBINE, _evas_gl_tess_combine_cb);
}
num = 0;
num = evas_list_count(poly->points);
i = 0;
glp = malloc(num * 6 * sizeof(GLdouble));
gluTessNormal(tess, 0, 0, 1);
gluTessProperty(tess, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
gluTessBeginPolygon(tess, NULL);
gluTessBeginContour(tess);
for (l = poly->points; l; l = l->next)
{
Evas_GL_Polygon_Point *p;
gluTessCallback(tess, GLU_TESS_BEGIN, _evas_gl_tess_begin_cb);
gluTessCallback(tess, GLU_TESS_END, _evas_gl_tess_end_cb);
gluTessCallback(tess, GLU_TESS_ERROR, _evas_gl_tess_error_cb);
gluTessCallback(tess, GLU_TESS_VERTEX, _evas_gl_tess_vertex_cb);
gluTessCallback(tess, GLU_TESS_COMBINE, _evas_gl_tess_combine_cb);
}
num = 0;
num = evas_list_count(poly->points);
i = 0;
glp = malloc(num * 6 * sizeof(GLdouble));
gluTessNormal(tess, 0, 0, 1);
gluTessProperty(tess, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
gluTessBeginPolygon(tess, NULL);
gluTessBeginContour(tess);
for (l = poly->points; l; l = l->next)
{
Evas_GL_Polygon_Point *p;
p = l->data;
glp[i++] = p->x;
glp[i++] = p->y;
glp[i++] = 0;
gluTessVertex(tess, &(glp[i - 3]), &(glp[i - 3]));
i += 3;
}
gluTessEndContour(tess);
gluTessEndPolygon(tess);
free(glp);
p = l->data;
glp[i++] = p->x;
glp[i++] = p->y;
glp[i++] = 0;
gluTessVertex(tess, &(glp[i - 3]), &(glp[i - 3]));
i += 3;
}
gluTessEndContour(tess);
gluTessEndPolygon(tess);
free(glp);
#else
glBegin(GL_POLYGON);
for (l = poly->points; l; l = l->next)
{
Evas_GL_Polygon_Point *p;
glBegin(GL_POLYGON);
for (l = poly->points; l; l = l->next)
{
Evas_GL_Polygon_Point *p;
p = l->data;
glVertex2i(p->x, p->y);
}
glEnd();
p = l->data;
glVertex2i(p->x, p->y);
}
glEnd();
#endif
glEndList();
poly->changed = 0;
return ;
}
glCallList(poly->dl);
}