mirror of
https://github.com/brl/mutter.git
synced 2024-11-10 07:56:14 -05:00
9b0fd92527
This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
554 lines
17 KiB
C
554 lines
17 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-object-private.h"
|
|
#include "cogl-primitive.h"
|
|
#include "cogl-primitive-private.h"
|
|
#include "cogl-attribute-private.h"
|
|
|
|
#include <stdarg.h>
|
|
|
|
static void _cogl_primitive_free (CoglPrimitive *primitive);
|
|
|
|
COGL_OBJECT_DEFINE (Primitive, primitive);
|
|
|
|
/* XXX: should we have an n_attributes arg instead of NULL terminating? */
|
|
CoglPrimitive *
|
|
cogl_primitive_new_with_attributes_array (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
CoglAttribute **attributes)
|
|
{
|
|
CoglPrimitive *primitive = g_slice_new (CoglPrimitive);
|
|
int i;
|
|
|
|
primitive->mode = mode;
|
|
primitive->first_vertex = 0;
|
|
primitive->n_vertices = n_vertices;
|
|
primitive->indices = NULL;
|
|
primitive->attributes =
|
|
g_array_new (TRUE, FALSE, sizeof (CoglAttribute *));
|
|
primitive->immutable_ref = 0;
|
|
|
|
for (i = 0; attributes[i]; i++)
|
|
{
|
|
CoglAttribute *attribute = attributes[i];
|
|
cogl_object_ref (attribute);
|
|
|
|
g_return_val_if_fail (cogl_is_attribute (attribute), NULL);
|
|
|
|
g_array_append_val (primitive->attributes, 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_array_unref (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
CoglAttribute **attributes)
|
|
{
|
|
CoglPrimitive *primitive;
|
|
int i;
|
|
|
|
primitive = cogl_primitive_new_with_attributes_array (mode,
|
|
n_vertices,
|
|
attributes);
|
|
|
|
for (i = 0; attributes[i]; 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 + 1));
|
|
attributes[n_attributes] = NULL;
|
|
|
|
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_array (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP2), data);
|
|
CoglAttribute *attributes[2];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2),
|
|
offsetof (CoglVertexP2, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP3), data);
|
|
CoglAttribute *attributes[2];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3),
|
|
offsetof (CoglVertexP3, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2C4 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP2C4), data);
|
|
CoglAttribute *attributes[3];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2C4),
|
|
offsetof (CoglVertexP2C4, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (array,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP2C4),
|
|
offsetof (CoglVertexP2C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
attributes[2] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3C4 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP3C4), data);
|
|
CoglAttribute *attributes[3];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3C4),
|
|
offsetof (CoglVertexP3C4, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (array,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP3C4),
|
|
offsetof (CoglVertexP3C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
attributes[2] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2t2 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2T2 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP2T2), data);
|
|
CoglAttribute *attributes[3];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2T2),
|
|
offsetof (CoglVertexP2T2, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (array,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP2T2),
|
|
offsetof (CoglVertexP2T2, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[2] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3t2 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3T2 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP3T2), data);
|
|
CoglAttribute *attributes[3];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3T2),
|
|
offsetof (CoglVertexP3T2, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (array,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP3T2),
|
|
offsetof (CoglVertexP3T2, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[2] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p2t2c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP2T2C4 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP2T2C4), data);
|
|
CoglAttribute *attributes[4];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP2T2C4),
|
|
offsetof (CoglVertexP2T2C4, x),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (array,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP2T2C4),
|
|
offsetof (CoglVertexP2T2C4, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[2] = cogl_attribute_new (array,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP2T2C4),
|
|
offsetof (CoglVertexP2T2C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
attributes[3] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
CoglPrimitive *
|
|
cogl_primitive_new_p3t2c4 (CoglVerticesMode mode,
|
|
int n_vertices,
|
|
const CoglVertexP3T2C4 *data)
|
|
{
|
|
CoglVertexArray *array =
|
|
cogl_vertex_array_new (n_vertices * sizeof (CoglVertexP3T2C4), data);
|
|
CoglAttribute *attributes[4];
|
|
|
|
attributes[0] = cogl_attribute_new (array,
|
|
"cogl_position_in",
|
|
sizeof (CoglVertexP3T2C4),
|
|
offsetof (CoglVertexP3T2C4, x),
|
|
3,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[1] = cogl_attribute_new (array,
|
|
"cogl_tex_coord0_in",
|
|
sizeof (CoglVertexP3T2C4),
|
|
offsetof (CoglVertexP3T2C4, s),
|
|
2,
|
|
COGL_ATTRIBUTE_TYPE_FLOAT);
|
|
attributes[2] = cogl_attribute_new (array,
|
|
"cogl_color_in",
|
|
sizeof (CoglVertexP3T2C4),
|
|
offsetof (CoglVertexP3T2C4, r),
|
|
4,
|
|
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
|
|
attributes[3] = NULL;
|
|
|
|
cogl_object_unref (array);
|
|
|
|
return _cogl_primitive_new_with_attributes_array_unref (mode, n_vertices,
|
|
attributes);
|
|
}
|
|
|
|
static void
|
|
free_attributes_list (CoglPrimitive *primitive)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < primitive->attributes->len; i++)
|
|
{
|
|
CoglAttribute *attribute =
|
|
g_array_index (primitive->attributes, CoglAttribute *, i);
|
|
cogl_object_unref (attribute);
|
|
}
|
|
g_array_set_size (primitive->attributes, 0);
|
|
}
|
|
|
|
static void
|
|
_cogl_primitive_free (CoglPrimitive *primitive)
|
|
{
|
|
free_attributes_list (primitive);
|
|
|
|
g_array_free (primitive->attributes, TRUE);
|
|
|
|
g_slice_free (CoglPrimitive, primitive);
|
|
}
|
|
|
|
static void
|
|
warn_about_midscene_changes (void)
|
|
{
|
|
static gboolean seen = FALSE;
|
|
if (!seen)
|
|
{
|
|
g_warning ("Mid-scene modification of buffers has "
|
|
"undefined results\n");
|
|
seen = TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_attributes (CoglPrimitive *primitive,
|
|
CoglAttribute **attributes)
|
|
{
|
|
int i;
|
|
|
|
g_return_if_fail (cogl_is_primitive (primitive));
|
|
|
|
if (G_UNLIKELY (primitive->immutable_ref))
|
|
{
|
|
warn_about_midscene_changes ();
|
|
return;
|
|
}
|
|
|
|
free_attributes_list (primitive);
|
|
|
|
g_array_set_size (primitive->attributes, 0);
|
|
for (i = 0; attributes[i]; i++)
|
|
{
|
|
cogl_object_ref (attributes[i]);
|
|
g_return_if_fail (cogl_is_attribute (attributes[i]));
|
|
g_array_append_val (primitive->attributes, attributes[i]);
|
|
}
|
|
}
|
|
|
|
int
|
|
cogl_primitive_get_first_vertex (CoglPrimitive *primitive)
|
|
{
|
|
g_return_val_if_fail (cogl_is_primitive (primitive), 0);
|
|
|
|
return primitive->first_vertex;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_first_vertex (CoglPrimitive *primitive,
|
|
int first_vertex)
|
|
{
|
|
g_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)
|
|
{
|
|
g_return_val_if_fail (cogl_is_primitive (primitive), 0);
|
|
|
|
return primitive->n_vertices;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_n_vertices (CoglPrimitive *primitive,
|
|
int n_vertices)
|
|
{
|
|
g_return_if_fail (cogl_is_primitive (primitive));
|
|
|
|
primitive->n_vertices = n_vertices;
|
|
}
|
|
|
|
CoglVerticesMode
|
|
cogl_primitive_get_mode (CoglPrimitive *primitive)
|
|
{
|
|
g_return_val_if_fail (cogl_is_primitive (primitive), 0);
|
|
|
|
return primitive->mode;
|
|
}
|
|
|
|
void
|
|
cogl_primitive_set_mode (CoglPrimitive *primitive,
|
|
CoglVerticesMode mode)
|
|
{
|
|
g_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)
|
|
{
|
|
g_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;
|
|
|
|
g_return_val_if_fail (cogl_is_primitive (primitive), NULL);
|
|
|
|
primitive->immutable_ref++;
|
|
|
|
for (i = 0; i < primitive->attributes->len; i++)
|
|
{
|
|
CoglAttribute *attribute =
|
|
g_array_index (primitive->attributes, CoglAttribute *, i);
|
|
_cogl_attribute_immutable_ref (attribute);
|
|
}
|
|
|
|
return primitive;
|
|
}
|
|
|
|
void
|
|
_cogl_primitive_immutable_unref (CoglPrimitive *primitive)
|
|
{
|
|
int i;
|
|
|
|
g_return_if_fail (cogl_is_primitive (primitive));
|
|
g_return_if_fail (primitive->immutable_ref > 0);
|
|
|
|
primitive->immutable_ref--;
|
|
|
|
for (i = 0; i < primitive->attributes->len; i++)
|
|
{
|
|
CoglAttribute *attribute =
|
|
g_array_index (primitive->attributes, CoglAttribute *, i);
|
|
_cogl_attribute_immutable_unref (attribute);
|
|
}
|
|
}
|
|
|
|
/* XXX: cogl_draw_primitive() ? */
|
|
void
|
|
cogl_primitive_draw (CoglPrimitive *primitive)
|
|
{
|
|
CoglAttribute **attributes =
|
|
(CoglAttribute **)primitive->attributes->data;
|
|
|
|
if (primitive->indices)
|
|
cogl_draw_indexed_attributes_array (primitive->mode,
|
|
primitive->first_vertex,
|
|
primitive->n_vertices,
|
|
primitive->indices,
|
|
attributes);
|
|
else
|
|
cogl_draw_attributes_array (primitive->mode,
|
|
primitive->first_vertex,
|
|
primitive->n_vertices,
|
|
attributes);
|
|
}
|
|
|