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[texture] Do not mix fixed point and units values

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Like we did for ClutterActor in commit cdb78ec4, fix ClutterTexture
usage of CoglFixed and ClutterUnit values without conversion between
the two types.
This commit is contained in:
Emmanuele Bassi 2008-12-19 13:42:17 +00:00
parent f6e9a701e4
commit cf5d69139d
1 changed files with 24 additions and 16 deletions
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40
clutter/clutter-texture.c
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@ -417,7 +417,8 @@ clutter_texture_set_fbo_projection (ClutterActor *self)
ClutterTexturePrivate *priv = CLUTTER_TEXTURE (self)->priv;
ClutterVertex verts[4];
ClutterFixed viewport[4];
ClutterFixed x_min, x_max, y_min, y_max;
ClutterUnit x_min, x_max, y_min, y_max;
ClutterFixed tx_min, tx_max, ty_min, ty_max;
ClutterPerspective perspective;
ClutterStage *stage;
ClutterFixed tan_angle, near_size;
@ -450,21 +451,26 @@ clutter_texture_set_fbo_projection (ClutterActor *self)
/* Convert the coordinates back to [-1,1] range */
cogl_get_viewport (viewport);
x_min = COGL_FIXED_DIV (x_min, viewport[2]) * 2 - COGL_FIXED_1;
x_max = COGL_FIXED_DIV (x_max, viewport[2]) * 2 - COGL_FIXED_1;
y_min = COGL_FIXED_DIV (y_min, viewport[3]) * 2 - COGL_FIXED_1;
y_max = COGL_FIXED_DIV (y_max, viewport[3]) * 2 - COGL_FIXED_1;
tx_min = COGL_FIXED_DIV (CLUTTER_UNITS_TO_FIXED (x_min), viewport[2])
* 2 - COGL_FIXED_1;
tx_max = COGL_FIXED_DIV (CLUTTER_UNITS_TO_FIXED (x_max), viewport[2])
* 2 - COGL_FIXED_1;
ty_min = COGL_FIXED_DIV (CLUTTER_UNITS_TO_FIXED (y_min), viewport[3])
* 2 - COGL_FIXED_1;
ty_max = COGL_FIXED_DIV (CLUTTER_UNITS_TO_FIXED (y_max), viewport[3])
* 2 - COGL_FIXED_1;
/* Set up a projection matrix so that the actor will be projected as
if it was drawn at its original location */
tan_angle = clutter_tani (CLUTTER_ANGLE_FROM_DEGX (perspective.fovy / 2));
tan_angle = cogl_angle_tan (COGL_ANGLE_FROM_DEGX (perspective.fovy / 2));
near_size = COGL_FIXED_MUL (perspective.z_near, tan_angle);
cogl_frustum (COGL_FIXED_MUL (x_min, near_size),
COGL_FIXED_MUL (x_max, near_size),
COGL_FIXED_MUL (-y_min, near_size),
COGL_FIXED_MUL (-y_max, near_size),
perspective.z_near, perspective.z_far);
cogl_frustum (COGL_FIXED_MUL (tx_min, near_size),
COGL_FIXED_MUL (tx_max, near_size),
COGL_FIXED_MUL (-ty_min, near_size),
COGL_FIXED_MUL (-ty_max, near_size),
perspective.z_near, perspective.z_far);
}
static void
@ -544,8 +550,10 @@ clutter_texture_paint (ClutterActor *self)
/* Restore the perspective matrix using cogl_perspective so that
the inverse matrix will be right */
cogl_perspective (perspective.fovy, perspective.aspect,
perspective.z_near, perspective.z_far);
cogl_perspective (perspective.fovy,
perspective.aspect,
perspective.z_near,
perspective.z_far);
/* If there is a shader on top of the shader stack, turn it back on. */
if (shader)
@ -588,9 +596,9 @@ clutter_texture_paint (ClutterActor *self)
/* Paint will have translated us */
cogl_texture_rectangle (priv->texture, 0, 0,
COGL_FIXED_FROM_INT (x_2 - x_1),
COGL_FIXED_FROM_INT (y_2 - y_1),
0, 0, t_w, t_h);
COGL_FIXED_FROM_INT (x_2 - x_1),
COGL_FIXED_FROM_INT (y_2 - y_1),
0, 0, t_w, t_h);
}
static void