0f5f4e8645
We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
339 lines
7.8 KiB
C
339 lines
7.8 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2008,2009 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, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl.h"
|
|
|
|
#include "cogl-internal.h"
|
|
#include "cogl-context.h"
|
|
#include "cogl-handle.h"
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
|
|
#include <string.h>
|
|
|
|
#include "cogl-shader-private.h"
|
|
#include "cogl-program.h"
|
|
|
|
static void _cogl_program_free (CoglProgram *program);
|
|
|
|
COGL_HANDLE_DEFINE (Program, program);
|
|
|
|
static void
|
|
_cogl_program_free (CoglProgram *program)
|
|
{
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* Unref all of the attached shaders */
|
|
g_slist_foreach (program->attached_shaders, (GFunc) cogl_handle_unref, NULL);
|
|
/* Destroy the list */
|
|
g_slist_free (program->attached_shaders);
|
|
|
|
_cogl_gles2_clear_cache_for_program ((CoglHandle) program);
|
|
|
|
if (ctx->drv.gles2.settings.user_program == (CoglHandle) program)
|
|
{
|
|
ctx->drv.gles2.settings.user_program = COGL_INVALID_HANDLE;
|
|
ctx->drv.gles2.settings_dirty = TRUE;
|
|
}
|
|
|
|
for (i = 0; i < COGL_GLES2_NUM_CUSTOM_UNIFORMS; i++)
|
|
if (program->custom_uniform_names[i])
|
|
g_free (program->custom_uniform_names[i]);
|
|
}
|
|
|
|
CoglHandle
|
|
cogl_create_program (void)
|
|
{
|
|
CoglProgram *program;
|
|
|
|
program = g_slice_new (CoglProgram);
|
|
program->attached_shaders = NULL;
|
|
memset (program->custom_uniform_names, 0,
|
|
COGL_GLES2_NUM_CUSTOM_UNIFORMS * sizeof (char *));
|
|
|
|
return _cogl_program_handle_new (program);
|
|
}
|
|
|
|
void
|
|
cogl_program_attach_shader (CoglHandle program_handle,
|
|
CoglHandle shader_handle)
|
|
{
|
|
CoglProgram *program;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (!cogl_is_program (program_handle) || !cogl_is_shader (shader_handle))
|
|
return;
|
|
|
|
program = _cogl_program_pointer_from_handle (program_handle);
|
|
program->attached_shaders
|
|
= g_slist_prepend (program->attached_shaders,
|
|
cogl_handle_ref (shader_handle));
|
|
|
|
/* Whenever the shader changes we will need to relink the program
|
|
with the fixed functionality shaders so we should forget the
|
|
cached programs */
|
|
_cogl_gles2_clear_cache_for_program (program);
|
|
}
|
|
|
|
void
|
|
cogl_program_link (CoglHandle handle)
|
|
{
|
|
/* There's no point in linking the program here because it will have
|
|
to be relinked with a different fixed functionality shader
|
|
whenever the settings change */
|
|
}
|
|
|
|
void
|
|
cogl_program_use (CoglHandle handle)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (handle != COGL_INVALID_HANDLE && !cogl_is_program (handle))
|
|
return;
|
|
|
|
ctx->drv.gles2.settings.user_program = handle;
|
|
ctx->drv.gles2.settings_dirty = TRUE;
|
|
}
|
|
|
|
int
|
|
cogl_program_get_uniform_location (CoglHandle handle,
|
|
const char *uniform_name)
|
|
{
|
|
int i;
|
|
CoglProgram *program;
|
|
|
|
if (!cogl_is_program (handle))
|
|
return -1;
|
|
|
|
program = _cogl_program_pointer_from_handle (handle);
|
|
|
|
/* We can't just ask the GL program object for the uniform location
|
|
directly because it will change every time the program is linked
|
|
with a new fixed functionality shader. Instead we make our own
|
|
mapping of uniform numbers and cache the names */
|
|
for (i = 0; program->custom_uniform_names[i]
|
|
&& i < COGL_GLES2_NUM_CUSTOM_UNIFORMS; i++)
|
|
if (!strcmp (program->custom_uniform_names[i], uniform_name))
|
|
return i;
|
|
|
|
if (i < COGL_GLES2_NUM_CUSTOM_UNIFORMS)
|
|
{
|
|
program->custom_uniform_names[i] = g_strdup (uniform_name);
|
|
return i;
|
|
}
|
|
else
|
|
/* We've run out of space for new uniform names so just pretend it
|
|
isn't there */
|
|
return -1;
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_1f (int uniform_no,
|
|
float value)
|
|
{
|
|
cogl_program_uniform_float (uniform_no, 1, 1, &value);
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_1i (int uniform_no,
|
|
int value)
|
|
{
|
|
cogl_program_uniform_int (uniform_no, 1, 1, &value);
|
|
}
|
|
|
|
static void
|
|
cogl_program_uniform_x (int uniform_no,
|
|
int size,
|
|
int count,
|
|
CoglBoxedType type,
|
|
gsize value_size,
|
|
gconstpointer value)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (uniform_no >= 0 && uniform_no < COGL_GLES2_NUM_CUSTOM_UNIFORMS
|
|
&& size >= 1 && size <= 4 && count >= 1)
|
|
{
|
|
CoglBoxedValue *bv = ctx->drv.gles2.custom_uniforms + uniform_no;
|
|
|
|
if (count == 1)
|
|
{
|
|
if (bv->count > 1)
|
|
g_free (bv->v.array);
|
|
|
|
memcpy (bv->v.float_value, value, value_size);
|
|
}
|
|
else
|
|
{
|
|
if (bv->count > 1)
|
|
{
|
|
if (bv->count != count || bv->size != size || bv->type != type)
|
|
{
|
|
g_free (bv->v.array);
|
|
bv->v.array = g_malloc (count * value_size);
|
|
}
|
|
}
|
|
else
|
|
bv->v.array = g_malloc (count * value_size);
|
|
|
|
memcpy (bv->v.array, value, count * value_size);
|
|
}
|
|
|
|
bv->type = type;
|
|
bv->size = size;
|
|
bv->count = count;
|
|
|
|
ctx->drv.gles2.dirty_custom_uniforms |= 1 << uniform_no;
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_float (int uniform_no,
|
|
int size,
|
|
int count,
|
|
const GLfloat *value)
|
|
{
|
|
cogl_program_uniform_x (uniform_no, size, count, COGL_BOXED_FLOAT,
|
|
sizeof (float) * size, value);
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_int (int uniform_no,
|
|
int size,
|
|
int count,
|
|
const GLint *value)
|
|
{
|
|
cogl_program_uniform_x (uniform_no, size, count, COGL_BOXED_INT,
|
|
sizeof (int) * size, value);
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_matrix (int uniform_no,
|
|
int size,
|
|
int count,
|
|
gboolean transpose,
|
|
const GLfloat *value)
|
|
{
|
|
CoglBoxedValue *bv;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
bv = ctx->drv.gles2.custom_uniforms + uniform_no;
|
|
|
|
cogl_program_uniform_x (uniform_no, size, count, COGL_BOXED_MATRIX,
|
|
sizeof (float) * size * size, value);
|
|
|
|
bv->transpose = transpose;
|
|
}
|
|
|
|
#else /* HAVE_COGL_GLES2 */
|
|
|
|
/* No support on regular OpenGL 1.1 */
|
|
|
|
CoglHandle
|
|
cogl_create_program (void)
|
|
{
|
|
return COGL_INVALID_HANDLE;
|
|
}
|
|
|
|
gboolean
|
|
cogl_is_program (CoglHandle handle)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
CoglHandle
|
|
cogl_program_ref (CoglHandle handle)
|
|
{
|
|
return COGL_INVALID_HANDLE;
|
|
}
|
|
|
|
void
|
|
cogl_program_unref (CoglHandle handle)
|
|
{
|
|
}
|
|
|
|
void
|
|
cogl_program_attach_shader (CoglHandle program_handle,
|
|
CoglHandle shader_handle)
|
|
{
|
|
}
|
|
|
|
void
|
|
cogl_program_link (CoglHandle program_handle)
|
|
{
|
|
}
|
|
|
|
void
|
|
cogl_program_use (CoglHandle program_handle)
|
|
{
|
|
}
|
|
|
|
int
|
|
cogl_program_get_uniform_location (CoglHandle program_handle,
|
|
const char *uniform_name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_1f (int uniform_no,
|
|
float value)
|
|
{
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_float (int uniform_no,
|
|
int size,
|
|
int count,
|
|
const GLfloat *value)
|
|
{
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_int (int uniform_no,
|
|
int size,
|
|
int count,
|
|
const int *value)
|
|
{
|
|
}
|
|
|
|
void
|
|
cogl_program_uniform_matrix (int uniform_no,
|
|
int size,
|
|
int count,
|
|
gboolean transpose,
|
|
const GLfloat *value)
|
|
{
|
|
}
|
|
|
|
|
|
#endif /* HAVE_COGL_GLES2 */
|