mirror of
https://github.com/brl/mutter.git
synced 2024-11-26 18:11:05 -05:00
54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
599 lines
20 KiB
C
599 lines
20 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx, 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx, 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx, 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx, 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2T2 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx, 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3T2 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx, 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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2T2C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx,
|
|
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 (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3T2C4 *data)
|
|
{
|
|
CoglAttributeBuffer *attribute_buffer =
|
|
cogl_attribute_buffer_new (ctx,
|
|
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 CoglBool 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,
|
|
int n_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;
|
|
primitive->n_vertices = n_indices;
|
|
}
|
|
|
|
CoglIndices *
|
|
cogl_primitive_get_indices (CoglPrimitive *primitive)
|
|
{
|
|
return primitive->indices;
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_copy (CoglPrimitive *primitive)
|
|
{
|
|
CoglPrimitive *copy;
|
|
|
|
copy = cogl_primitive_new_with_attributes (primitive->mode,
|
|
primitive->n_vertices,
|
|
primitive->attributes,
|
|
primitive->n_attributes);
|
|
|
|
cogl_primitive_set_indices (copy, primitive->indices, primitive->n_vertices);
|
|
cogl_primitive_set_first_vertex (copy, primitive->first_vertex);
|
|
|
|
return copy;
|
|
}
|
|
|
|
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_foreach_attribute (CoglPrimitive *primitive,
|
|
CoglPrimitiveAttributeCallback callback,
|
|
void *user_data)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < primitive->n_attributes; i++)
|
|
if (!callback (primitive, primitive->attributes[i], user_data))
|
|
break;
|
|
}
|