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vertex-buffer: use cogl_get_rectangle_indices

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The functionality of cogl_vertex_buffer_indices_get_for_quads is now
provided by cogl_get_rectangle_indices so this reworks the former to now
work in terms of the latter so we don't have duplicated logic.
This commit is contained in:
Robert Bragg 2010-10-26 18:56:57 +01:00
parent c6761aa93b
commit afb8a64bc4
3 changed files with 37 additions and 81 deletions
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9
cogl/cogl-context.c
View File

@ -195,10 +195,6 @@ cogl_create_context (void)
_context->in_begin_gl_block = FALSE;
_context->quad_indices_byte = COGL_INVALID_HANDLE;
_context->quad_indices_short = COGL_INVALID_HANDLE;
_context->quad_indices_short_len = 0;
_context->quad_buffer_indices_byte = COGL_INVALID_HANDLE;
_context->quad_buffer_indices = COGL_INVALID_HANDLE;
_context->quad_buffer_indices_len = 0;
@ -285,11 +281,6 @@ _cogl_destroy_context (void)
if (_context->logged_vertices)
g_array_free (_context->logged_vertices, TRUE);
if (_context->quad_indices_byte)
cogl_handle_unref (_context->quad_indices_byte);
if (_context->quad_indices_short)
cogl_handle_unref (_context->quad_indices_short);
if (_context->quad_buffer_indices_byte)
cogl_handle_unref (_context->quad_buffer_indices_byte);
if (_context->quad_buffer_indices)

6
cogl/cogl-context.h
View File

@ -145,12 +145,6 @@ typedef struct
/* Pre-generated VBOs containing indices to generate GL_TRIANGLES
out of a vertex array of quads */
/* XXX: These should be removed when the vertex-buffer.c indices
* code is re-worked to use cogl_get_rectangle_indices. */
CoglHandle quad_indices_byte;
unsigned int quad_indices_short_len;
CoglHandle quad_indices_short;
CoglHandle quad_buffer_indices_byte;
unsigned int quad_buffer_indices_len;
CoglHandle quad_buffer_indices;

103
cogl/cogl-vertex-buffer.c
View File

@ -1535,16 +1535,24 @@ cogl_vertex_buffer_draw (CoglHandle handle,
update_primitive_and_draw (buffer, mode, first, count, NULL);
}
static CoglHandle
_cogl_vertex_buffer_indices_new_real (CoglIndices *indices)
{
CoglVertexBufferIndices *buffer_indices =
g_slice_alloc (sizeof (CoglVertexBufferIndices));
buffer_indices->indices = indices;
return _cogl_vertex_buffer_indices_handle_new (buffer_indices);
}
CoglHandle
cogl_vertex_buffer_indices_new (CoglIndicesType indices_type,
const void *indices_array,
int indices_len)
{
CoglVertexBufferIndices *buffer_indices =
g_slice_alloc (sizeof (CoglVertexBufferIndices));
buffer_indices->indices =
CoglIndices *indices =
cogl_indices_new (indices_type, indices_array, indices_len);
return _cogl_vertex_buffer_indices_handle_new (buffer_indices);
return _cogl_vertex_buffer_indices_new_real (indices);
}
CoglIndicesType
@ -1619,78 +1627,41 @@ cogl_vertex_buffer_indices_get_for_quads (unsigned int n_indices)
{
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
/* Check if the indices would fit in a byte array */
if (n_indices <= 256 / 4 * 6)
{
/* Generate the byte array if we haven't already */
if (ctx->quad_indices_byte == COGL_INVALID_HANDLE)
if (ctx->quad_buffer_indices_byte == COGL_INVALID_HANDLE)
{
guint8 *byte_array = g_malloc (256 / 4 * 6 * sizeof (guint8));
guint8 *p = byte_array;
int i, vert_num = 0;
for (i = 0; i < 256 / 4; i++)
{
*(p++) = vert_num + 0;
*(p++) = vert_num + 1;
*(p++) = vert_num + 2;
*(p++) = vert_num + 0;
*(p++) = vert_num + 2;
*(p++) = vert_num + 3;
vert_num += 4;
}
ctx->quad_indices_byte
= cogl_vertex_buffer_indices_new (COGL_INDICES_TYPE_UNSIGNED_BYTE,
byte_array,
256 / 4 * 6);
g_free (byte_array);
/* NB: cogl_get_quad_indices takes n_quads not n_indices... */
CoglIndices *indices = cogl_get_rectangle_indices (256 / 4);
cogl_object_ref (indices);
ctx->quad_buffer_indices_byte =
_cogl_vertex_buffer_indices_new_real (indices);
}
return ctx->quad_indices_byte;
return ctx->quad_buffer_indices_byte;
}
else
{
if (ctx->quad_indices_short_len < n_indices)
if (ctx->quad_buffer_indices_len < n_indices)
{
guint16 *short_array;
guint16 *p;
int i, vert_num = 0;
if (ctx->quad_indices_short != COGL_INVALID_HANDLE)
cogl_handle_unref (ctx->quad_indices_short);
/* Pick a power of two >= MAX (512, n_indices) */
if (ctx->quad_indices_short_len == 0)
ctx->quad_indices_short_len = 512;
while (ctx->quad_indices_short_len < n_indices)
ctx->quad_indices_short_len *= 2;
/* Over-allocate to generate a whole number of quads */
p = short_array = g_malloc ((ctx->quad_indices_short_len
+ 5) / 6 * 6
* sizeof (guint16));
/* Fill in the complete quads */
for (i = 0; i < ctx->quad_indices_short_len; i += 6)
{
*(p++) = vert_num + 0;
*(p++) = vert_num + 1;
*(p++) = vert_num + 2;
*(p++) = vert_num + 0;
*(p++) = vert_num + 2;
*(p++) = vert_num + 3;
vert_num += 4;
}
ctx->quad_indices_short
= cogl_vertex_buffer_indices_new (COGL_INDICES_TYPE_UNSIGNED_SHORT,
short_array,
ctx->quad_indices_short_len);
g_free (short_array);
cogl_handle_unref (ctx->quad_buffer_indices);
ctx->quad_buffer_indices = COGL_INVALID_HANDLE;
}
return ctx->quad_indices_short;
if (ctx->quad_buffer_indices == COGL_INVALID_HANDLE)
{
/* NB: cogl_get_quad_indices takes n_quads not n_indices... */
CoglIndices *indices = cogl_get_rectangle_indices (n_indices / 6);
cogl_object_ref (indices);
ctx->quad_buffer_indices =
_cogl_vertex_buffer_indices_new_real (indices);
}
ctx->quad_buffer_indices_len = n_indices;
return ctx->quad_buffer_indices;
}
g_return_val_if_reached (NULL);
}