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Support GL_ARB_texture_rectangle in MutterShapedTexture

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mutter-shaped-texture.c: Retrieve the target from the cogl_texture
  and use it, instead of hardcoding GL_TEXTURE_2D.
This commit is contained in:
Owen W. Taylor 2008-11-05 17:45:00 -05:00
parent 026008a700
commit f826fb1d9a
1 changed files with 22 additions and 14 deletions
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36
src/compositor/mutter/mutter-shaped-texture.c
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@ -233,6 +233,7 @@ mutter_shaped_texture_ensure_mask (MutterShapedTexture *stex)
CoglHandle paint_tex; CoglHandle paint_tex;
guint tex_width, tex_height; guint tex_width, tex_height;
GLuint mask_gl_tex; GLuint mask_gl_tex;
GLenum mask_target;
paint_tex = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (stex)); paint_tex = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (stex));
@ -291,14 +292,17 @@ mutter_shaped_texture_ensure_mask (MutterShapedTexture *stex)
priv->mask_width = tex_width; priv->mask_width = tex_width;
priv->mask_height = tex_height; priv->mask_height = tex_height;
cogl_texture_get_gl_texture (priv->mask_texture, &mask_gl_tex, NULL); cogl_texture_get_gl_texture (priv->mask_texture, &mask_gl_tex, &mask_target);
mutter_shaped_texture_get_gl_size (priv->mask_texture, mutter_shaped_texture_get_gl_size (priv->mask_texture,
&priv->mask_gl_width, &priv->mask_gl_width,
&priv->mask_gl_height); &priv->mask_gl_height);
if ((guint) priv->mask_gl_width == tex_width if (mask_target == GL_TEXTURE_RECTANGLE_ARB)
&& (guint) priv->mask_gl_height == tex_height) mutter_shaped_texture_set_coord_array (0.0f, 0.0f, tex_width, tex_height,
priv->mask_tex_coords);
else if ((guint) priv->mask_gl_width == tex_width
&& (guint) priv->mask_gl_height == tex_height)
mutter_shaped_texture_set_coord_array (0.0f, 0.0f, 1.0f, 1.0f, mutter_shaped_texture_set_coord_array (0.0f, 0.0f, 1.0f, 1.0f,
priv->mask_tex_coords); priv->mask_tex_coords);
else else
@ -322,6 +326,7 @@ mutter_shaped_texture_paint (ClutterActor *actor)
GLboolean vertex_array_was_enabled, tex_coord_array_was_enabled; GLboolean vertex_array_was_enabled, tex_coord_array_was_enabled;
GLboolean color_array_was_enabled; GLboolean color_array_was_enabled;
GLuint paint_gl_tex, mask_gl_tex; GLuint paint_gl_tex, mask_gl_tex;
GLenum paint_target, mask_target;
guint paint_gl_width, paint_gl_height; guint paint_gl_width, paint_gl_height;
GLfloat vertex_coords[8], paint_tex_coords[8]; GLfloat vertex_coords[8], paint_tex_coords[8];
ClutterActorBox alloc; ClutterActorBox alloc;
@ -358,18 +363,18 @@ mutter_shaped_texture_paint (ClutterActor *actor)
mutter_shaped_texture_ensure_mask (stex); mutter_shaped_texture_ensure_mask (stex);
cogl_texture_get_gl_texture (paint_tex, &paint_gl_tex, NULL); cogl_texture_get_gl_texture (paint_tex, &paint_gl_tex, &paint_target);
cogl_texture_get_gl_texture (priv->mask_texture, &mask_gl_tex, NULL); cogl_texture_get_gl_texture (priv->mask_texture, &mask_gl_tex, &mask_target);
/* We need to keep track of the some of the old state so that we /* We need to keep track of the some of the old state so that we
don't confuse Cogl */ don't confuse Cogl */
texture_was_enabled = glIsEnabled (GL_TEXTURE_2D); texture_was_enabled = glIsEnabled (paint_target);
blend_was_enabled = glIsEnabled (GL_BLEND); blend_was_enabled = glIsEnabled (GL_BLEND);
vertex_array_was_enabled = glIsEnabled (GL_VERTEX_ARRAY); vertex_array_was_enabled = glIsEnabled (GL_VERTEX_ARRAY);
tex_coord_array_was_enabled = glIsEnabled (GL_TEXTURE_COORD_ARRAY); tex_coord_array_was_enabled = glIsEnabled (GL_TEXTURE_COORD_ARRAY);
color_array_was_enabled = glIsEnabled (GL_COLOR_ARRAY); color_array_was_enabled = glIsEnabled (GL_COLOR_ARRAY);
glEnable (GL_TEXTURE_2D); glEnable (paint_target);
glEnable (GL_BLEND); glEnable (GL_BLEND);
glEnableClientState (GL_VERTEX_ARRAY); glEnableClientState (GL_VERTEX_ARRAY);
glEnableClientState (GL_TEXTURE_COORD_ARRAY); glEnableClientState (GL_TEXTURE_COORD_ARRAY);
@ -379,7 +384,7 @@ mutter_shaped_texture_paint (ClutterActor *actor)
cogl_color (&white); cogl_color (&white);
/* Put the main painting texture in the first texture unit */ /* Put the main painting texture in the first texture unit */
glBindTexture (GL_TEXTURE_2D, paint_gl_tex); glBindTexture (paint_target, paint_gl_tex);
/* We need the actual size of the texture so that we can calculate /* We need the actual size of the texture so that we can calculate
the right texture coordinates if NPOTs textures are not supported the right texture coordinates if NPOTs textures are not supported
@ -391,9 +396,9 @@ mutter_shaped_texture_paint (ClutterActor *actor)
/* Put the mask texture in the second texture unit */ /* Put the mask texture in the second texture unit */
tst_active_texture (GL_TEXTURE1); tst_active_texture (GL_TEXTURE1);
tst_client_active_texture (GL_TEXTURE1); tst_client_active_texture (GL_TEXTURE1);
glBindTexture (GL_TEXTURE_2D, mask_gl_tex); glBindTexture (mask_target, mask_gl_tex);
glEnable (GL_TEXTURE_2D); glEnable (mask_target);
glEnableClientState (GL_TEXTURE_COORD_ARRAY); glEnableClientState (GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer (2, GL_FLOAT, 0, priv->mask_tex_coords); glTexCoordPointer (2, GL_FLOAT, 0, priv->mask_tex_coords);
@ -419,8 +424,11 @@ mutter_shaped_texture_paint (ClutterActor *actor)
- alloc.y1), - alloc.y1),
vertex_coords); vertex_coords);
if ((guint) paint_gl_width == tex_width if (paint_target == GL_TEXTURE_RECTANGLE_ARB)
&& (guint) paint_gl_height == tex_height) mutter_shaped_texture_set_coord_array (0.0f, 0.0f, tex_width, tex_height,
paint_tex_coords);
else if ((guint) paint_gl_width == tex_width
&& (guint) paint_gl_height == tex_height)
mutter_shaped_texture_set_coord_array (0.0f, 0.0f, 1.0f, 1.0f, mutter_shaped_texture_set_coord_array (0.0f, 0.0f, 1.0f, 1.0f,
paint_tex_coords); paint_tex_coords);
else else
@ -434,7 +442,7 @@ mutter_shaped_texture_paint (ClutterActor *actor)
glDrawArrays (GL_TRIANGLE_STRIP, 0, 4); glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
/* Disable the second texture unit and coord array */ /* Disable the second texture unit and coord array */
glDisable (GL_TEXTURE_2D); glDisable (mask_target);
glDisableClientState (GL_TEXTURE_COORD_ARRAY); glDisableClientState (GL_TEXTURE_COORD_ARRAY);
/* Go back to operating on the first texture unit */ /* Go back to operating on the first texture unit */
@ -443,7 +451,7 @@ mutter_shaped_texture_paint (ClutterActor *actor)
/* Restore the old state */ /* Restore the old state */
if (!texture_was_enabled) if (!texture_was_enabled)
glDisable (GL_TEXTURE_2D); glDisable (paint_target);
if (!blend_was_enabled) if (!blend_was_enabled)
glDisable (GL_BLEND); glDisable (GL_BLEND);
if (!vertex_array_was_enabled) if (!vertex_array_was_enabled)