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Add cogl_texture_multiple_rectangles

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This takes an array of sets of 8 floats to describe the rectangles. It
tries to send the geometry with a single glDrawArrays as far as
possible. cogl_texture_rectangle is now just a wrapper around
cogl_texture_multiple_rectangles.
This commit is contained in:
Neil Roberts 2008-11-28 12:44:21 +00:00
parent 47a21cd94f
commit c502c5c3f4
2 changed files with 55 additions and 24 deletions
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5
cogl-texture.h
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@ -385,6 +385,11 @@ void cogl_texture_polygon (CoglHandle handle,
CoglTextureVertex *vertices,
gboolean use_color);
void cogl_texture_multiple_rectangles
(CoglHandle handle,
const CoglFixed *verts,
guint n_rects);
G_END_DECLS
#endif /* __COGL_TEXTURE_H__ */

74
gl/cogl-texture.c
View File

@ -2172,15 +2172,9 @@ _cogl_texture_quad_hw (CoglTexture *tex,
}
void
cogl_texture_rectangle (CoglHandle handle,
CoglFixed x1,
CoglFixed y1,
CoglFixed x2,
CoglFixed y2,
CoglFixed tx1,
CoglFixed ty1,
CoglFixed tx2,
CoglFixed ty2)
cogl_texture_multiple_rectangles (CoglHandle handle,
const CoglFixed *verts,
guint n_rects)
{
CoglTexture *tex;
gulong enable_flags = (COGL_ENABLE_TEXTURE_2D
@ -2202,9 +2196,6 @@ cogl_texture_rectangle (CoglHandle handle,
if (tex->slice_gl_handles->len == 0)
return;
if (tx1 == tx2 || ty1 == ty2)
return;
/* Prepare GL state */
if (ctx->color_alpha < 255
|| tex->bitmap.format & COGL_A_BIT)
@ -2217,22 +2208,57 @@ cogl_texture_rectangle (CoglHandle handle,
g_array_set_size (ctx->texture_vertices, 0);
/* If there is only one GL texture and either the texture is NPOT
(no waste) or all of the coordinates are in the range [0,1] then
we can use hardware tiling */
if (tex->slice_gl_handles->len == 1
&& (cogl_features_available (COGL_FEATURE_TEXTURE_NPOT)
|| (tx1 >= 0 && tx1 <= COGL_FIXED_1
&& tx2 >= 0 && tx2 <= COGL_FIXED_1
&& ty1 >= 0 && ty1 <= COGL_FIXED_1
&& ty2 >= 0 && ty2 <= COGL_FIXED_1)))
_cogl_texture_quad_hw (tex, x1,y1, x2,y2, tx1,ty1, tx2,ty2);
else
_cogl_texture_quad_sw (tex, x1,y1, x2,y2, tx1,ty1, tx2,ty2);
while (n_rects-- > 0)
{
if (verts[4] != verts[6] && verts[5] != verts[7])
{
/* If there is only one GL texture and either the texture is
NPOT (no waste) or all of the coordinates are in the
range [0,1] then we can use hardware tiling */
if (tex->slice_gl_handles->len == 1
&& (cogl_features_available (COGL_FEATURE_TEXTURE_NPOT)
|| (verts[4] >= 0 && verts[4] <= COGL_FIXED_1
&& verts[6] >= 0 && verts[6] <= COGL_FIXED_1
&& verts[5] >= 0 && verts[5] <= COGL_FIXED_1
&& verts[7] >= 0 && verts[7] <= COGL_FIXED_1)))
_cogl_texture_quad_hw (tex, verts[0],verts[1], verts[2],verts[3],
verts[4],verts[5], verts[6],verts[7]);
else
_cogl_texture_quad_sw (tex, verts[0],verts[1], verts[2],verts[3],
verts[4],verts[5], verts[6],verts[7]);
}
verts += 8;
}
_cogl_texture_flush_vertices ();
}
void
cogl_texture_rectangle (CoglHandle handle,
CoglFixed x1,
CoglFixed y1,
CoglFixed x2,
CoglFixed y2,
CoglFixed tx1,
CoglFixed ty1,
CoglFixed tx2,
CoglFixed ty2)
{
CoglFixed verts[8];
verts[0] = x1;
verts[1] = y1;
verts[2] = x2;
verts[3] = y2;
verts[4] = tx1;
verts[5] = ty1;
verts[6] = tx2;
verts[7] = ty2;
cogl_texture_multiple_rectangles (handle, verts, 1);
}
void
cogl_texture_polygon (CoglHandle handle,
guint n_vertices,