b72f255c0a
Since we've had several developers from admirable projects say they would like to use Cogl but would really prefer not to pull in gobject,gmodule and glib as extra dependencies we are investigating if we can get to the point where glib is only an optional dependency. Actually we feel like we only make minimal use of glib anyway, so it may well be quite straightforward to achieve this. This adds a --disable-glib configure option that can be used to disable features that depend on glib. Actually --disable-glib doesn't strictly disable glib at this point because it's more helpful if cogl continues to build as we make incremental progress towards this. The first use of glib that this patch tackles is the use of g_return_val_if_fail and g_return_if_fail which have been replaced with equivalent _COGL_RETURN_VAL_IF_FAIL and _COGL_RETURN_IF_FAIL macros. Reviewed-by: Neil Roberts <neil@linux.intel.com>
581 lines
19 KiB
C
581 lines
19 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2010 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*
|
|
* Authors:
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl-util.h"
|
|
#include "cogl-object-private.h"
|
|
#include "cogl-primitive.h"
|
|
#include "cogl-primitive-private.h"
|
|
#include "cogl-attribute-private.h"
|
|
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
|
|
static void _cogl_primitive_free (CoglPrimitive *primitive);
|
|
|
|
COGL_OBJECT_DEFINE (Primitive, primitive);
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_with_attributes (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
CoglAttribute **attributes,
|
|
int n_attributes)
|
|
{
|
|
CoglPrimitive *primitive;
|
|
int i;
|
|
|
|
primitive = g_slice_alloc (sizeof (CoglPrimitive) +
|
|
sizeof (CoglAttribute *) * (n_attributes - 1));
|
|
primitive->mode = mode;
|
|
primitive->first_vertex = 0;
|
|
primitive->n_vertices = n_vertices;
|
|
primitive->indices = NULL;
|
|
primitive->immutable_ref = 0;
|
|
|
|
primitive->n_attributes = n_attributes;
|
|
primitive->n_embedded_attributes = n_attributes;
|
|
primitive->attributes = &primitive->embedded_attribute;
|
|
for (i = 0; i < n_attributes; i++)
|
|
{
|
|
CoglAttribute *attribute = attributes[i];
|
|
cogl_object_ref (attribute);
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_attribute (attribute), NULL);
|
|
|
|
primitive->attributes[i] = attribute;
|
|
}
|
|
|
|
return _cogl_primitive_object_new (primitive);
|
|
}
|
|
|
|
/* This is just an internal convenience wrapper around
|
|
new_with_attributes that also unrefs the attributes. It is just
|
|
used for the builtin struct constructors */
|
|
static CoglPrimitive *
|
|
_cogl_primitive_new_with_attributes_unref (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
CoglAttribute **attributes,
|
|
int n_attributes)
|
|
{
|
|
CoglPrimitive *primitive;
|
|
int i;
|
|
|
|
primitive = cogl_primitive_new_with_attributes (mode,
|
|
n_vertices,
|
|
attributes,
|
|
n_attributes);
|
|
|
|
for (i = 0; i < n_attributes; i++)
|
|
cogl_object_unref (attributes[i]);
|
|
|
|
return primitive;
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
...)
|
|
{
|
|
va_list ap;
|
|
int n_attributes;
|
|
CoglAttribute **attributes;
|
|
int i;
|
|
CoglAttribute *attribute;
|
|
|
|
va_start (ap, n_vertices);
|
|
for (n_attributes = 0; va_arg (ap, CoglAttribute *); n_attributes++)
|
|
;
|
|
va_end (ap);
|
|
|
|
attributes = g_alloca (sizeof (CoglAttribute *) * n_attributes);
|
|
|
|
va_start (ap, n_vertices);
|
|
for (i = 0; (attribute = va_arg (ap, CoglAttribute *)); i++)
|
|
attributes[i] = attribute;
|
|
va_end (ap);
|
|
|
|
return cogl_primitive_new_with_attributes (mode, n_vertices,
|
|
attributes,
|
|
i);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP2), data);
|
|
CoglAttribute *attributes[1];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2),
|
|
offsetof (CoglVertexP2, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
1);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP3), data);
|
|
CoglAttribute *attributes[1];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3),
|
|
offsetof (CoglVertexP3, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
1);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP2C4), data);
|
|
CoglAttribute *attributes[2];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2C4),
|
|
offsetof (CoglVertexP2C4, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP2C4),
|
|
offsetof (CoglVertexP2C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
2);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP3C4), data);
|
|
CoglAttribute *attributes[2];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3C4),
|
|
offsetof (CoglVertexP3C4, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP3C4),
|
|
offsetof (CoglVertexP3C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
2);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2t2 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2T2 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP2T2), data);
|
|
CoglAttribute *attributes[2];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2T2),
|
|
offsetof (CoglVertexP2T2, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP2T2),
|
|
offsetof (CoglVertexP2T2, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
2);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3t2 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3T2 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP3T2), data);
|
|
CoglAttribute *attributes[2];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3T2),
|
|
offsetof (CoglVertexP3T2, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP3T2),
|
|
offsetof (CoglVertexP3T2, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
2);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2t2c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2T2C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP2T2C4), data);
|
|
CoglAttribute *attributes[3];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2T2C4),
|
|
offsetof (CoglVertexP2T2C4, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP2T2C4),
|
|
offsetof (CoglVertexP2T2C4, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[2] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP2T2C4),
|
|
offsetof (CoglVertexP2T2C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
3);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3t2c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3T2C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (n_vertices * sizeof (CoglVertexP3T2C4), data);
|
|
CoglAttribute *attributes[3];
|
|
|
|
attributes[0] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3T2C4),
|
|
offsetof (CoglVertexP3T2C4, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP3T2C4),
|
|
offsetof (CoglVertexP3T2C4, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[2] = cogl_attribute_new (attribute_buffer,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP3T2C4),
|
|
offsetof (CoglVertexP3T2C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
|
|
cogl_object_unref (attribute_buffer);
|
|
|
|
return _cogl_primitive_new_with_attributes_unref (mode, n_vertices,
|
|
attributes,
|
|
3);
|
|
}
|
|
|
|
static void
|
|
_cogl_primitive_free (CoglPrimitive *primitive)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < primitive->n_attributes; i++)
|
|
cogl_object_unref (primitive->attributes[i]);
|
|
|
|
if (primitive->attributes != &primitive->embedded_attribute)
|
|
g_slice_free1 (sizeof (CoglAttribute *) * primitive->n_attributes,
|
|
primitive->attributes);
|
|
|
|
g_slice_free1 (sizeof (CoglPrimitive) +
|
|
sizeof (CoglAttribute *) *
|
|
(primitive->n_embedded_attributes - 1), primitive);
|
|
}
|
|
|
|
static void
|
|
warn_about_midscene_changes (void)
|
|
{
|
|
static gboolean seen = FALSE;
|
|
if (!seen)
|
|
{
|
|
g_warning ("Mid-scene modification of primitives has "
|
|
"undefined results\n");
|
|
seen = TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_attributes (CoglPrimitive *primitive,
|
|
CoglAttribute **attributes,
|
|
int n_attributes)
|
|
{
|
|
int i;
|
|
|
|
_COGL_RETURN_IF_FAIL (cogl_is_primitive (primitive));
|
|
|
|
if (G_UNLIKELY (primitive->immutable_ref))
|
|
{
|
|
warn_about_midscene_changes ();
|
|
return;
|
|
}
|
|
|
|
/* NB: we don't unref the previous attributes before refing the new
|
|
* in case we would end up releasing the last reference for an
|
|
* attribute thats actually in the new list too. */
|
|
for (i = 0; i < n_attributes; i++)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_attribute (attributes[i]));
|
|
cogl_object_ref (attributes[i]);
|
|
}
|
|
|
|
for (i = 0; i < primitive->n_attributes; i++)
|
|
cogl_object_unref (primitive->attributes[i]);
|
|
|
|
/* First try to use the embedded storage assocated with the
|
|
* primitive, else fallback to slice allocating separate storage for
|
|
* the attribute pointers... */
|
|
|
|
if (n_attributes <= primitive->n_embedded_attributes)
|
|
{
|
|
if (primitive->attributes != &primitive->embedded_attribute)
|
|
g_slice_free1 (sizeof (CoglAttribute *) * primitive->n_attributes,
|
|
primitive->attributes);
|
|
primitive->attributes = &primitive->embedded_attribute;
|
|
}
|
|
else
|
|
{
|
|
if (primitive->attributes != &primitive->embedded_attribute)
|
|
g_slice_free1 (sizeof (CoglAttribute *) * primitive->n_attributes,
|
|
primitive->attributes);
|
|
primitive->attributes =
|
|
g_slice_alloc (sizeof (CoglAttribute *) * n_attributes);
|
|
}
|
|
|
|
memcpy (primitive->attributes, attributes,
|
|
sizeof (CoglAttribute *) * n_attributes);
|
|
|
|
primitive->n_attributes = n_attributes;
|
|
}
|
|
|
|
int
|
|
cogl_primitive_get_first_vertex (CoglPrimitive *primitive)
|
|
{
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), 0);
|
|
|
|
return primitive->first_vertex;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_first_vertex (CoglPrimitive *primitive,
|
|
int first_vertex)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_primitive (primitive));
|
|
|
|
if (G_UNLIKELY (primitive->immutable_ref))
|
|
{
|
|
warn_about_midscene_changes ();
|
|
return;
|
|
}
|
|
|
|
primitive->first_vertex = first_vertex;
|
|
}
|
|
|
|
int
|
|
cogl_primitive_get_n_vertices (CoglPrimitive *primitive)
|
|
{
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), 0);
|
|
|
|
return primitive->n_vertices;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_n_vertices (CoglPrimitive *primitive,
|
|
int n_vertices)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_primitive (primitive));
|
|
|
|
primitive->n_vertices = n_vertices;
|
|
}
|
|
|
|
CoglVerticesMode
|
|
cogl_primitive_get_mode (CoglPrimitive *primitive)
|
|
{
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), 0);
|
|
|
|
return primitive->mode;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_mode (CoglPrimitive *primitive,
|
|
CoglVerticesMode mode)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_primitive (primitive));
|
|
|
|
if (G_UNLIKELY (primitive->immutable_ref))
|
|
{
|
|
warn_about_midscene_changes ();
|
|
return;
|
|
}
|
|
|
|
primitive->mode = mode;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_indices (CoglPrimitive *primitive,
|
|
CoglIndices *indices)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_primitive (primitive));
|
|
|
|
if (G_UNLIKELY (primitive->immutable_ref))
|
|
{
|
|
warn_about_midscene_changes ();
|
|
return;
|
|
}
|
|
|
|
if (indices)
|
|
cogl_object_ref (indices);
|
|
if (primitive->indices)
|
|
cogl_object_unref (primitive->indices);
|
|
primitive->indices = indices;
|
|
}
|
|
|
|
CoglPrimitive *
|
|
_cogl_primitive_immutable_ref (CoglPrimitive *primitive)
|
|
{
|
|
int i;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), NULL);
|
|
|
|
primitive->immutable_ref++;
|
|
|
|
for (i = 0; i < primitive->n_attributes; i++)
|
|
_cogl_attribute_immutable_ref (primitive->attributes[i]);
|
|
|
|
return primitive;
|
|
}
|
|
|
|
void
|
|
_cogl_primitive_immutable_unref (CoglPrimitive *primitive)
|
|
{
|
|
int i;
|
|
|
|
_COGL_RETURN_IF_FAIL (cogl_is_primitive (primitive));
|
|
_COGL_RETURN_IF_FAIL (primitive->immutable_ref > 0);
|
|
|
|
primitive->immutable_ref--;
|
|
|
|
for (i = 0; i < primitive->n_attributes; i++)
|
|
_cogl_attribute_immutable_unref (primitive->attributes[i]);
|
|
}
|
|
|
|
void
|
|
_cogl_primitive_draw (CoglPrimitive *primitive,
|
|
CoglDrawFlags flags)
|
|
{
|
|
if (primitive->indices)
|
|
_cogl_draw_indexed_attributes (primitive->mode,
|
|
primitive->first_vertex,
|
|
primitive->n_vertices,
|
|
primitive->indices,
|
|
primitive->attributes,
|
|
primitive->n_attributes,
|
|
flags);
|
|
else
|
|
_cogl_draw_attributes (primitive->mode,
|
|
primitive->first_vertex,
|
|
primitive->n_vertices,
|
|
primitive->attributes,
|
|
primitive->n_attributes,
|
|
flags);
|
|
}
|
|
|
|
/* XXX: cogl_draw_primitive() ? */
|
|
void
|
|
cogl_primitive_draw (CoglPrimitive *primitive)
|
|
{
|
|
_cogl_primitive_draw (primitive, 0 /* no flags */);
|
|
}
|