mutter/clutter/cogl/gles/cogl-program.c
Robert Bragg 36cfb60307 [cogl] Remove the COGL{enum,int,uint} typedefs
COGLenum, COGLint and COGLuint which were simply typedefs for GL{enum,int,uint}
have been removed from the API and replaced with specialised enum typedefs, int
and unsigned int. These were causing problems for generating bindings and also
considered poor style.

The cogl texture filter defines CGL_NEAREST and CGL_LINEAR etc are now replaced
by a namespaced typedef 'CoglTextureFilter' so they should be replaced with
COGL_TEXTURE_FILTER_NEAREST and COGL_TEXTURE_FILTER_LINEAR etc.

The shader type defines CGL_VERTEX_SHADER and CGL_FRAGMENT_SHADER are handled by
a CoglShaderType typedef and should be replaced with COGL_SHADER_TYPE_VERTEX and
COGL_SHADER_TYPE_FRAGMENT.

cogl_shader_get_parameteriv has been replaced by cogl_shader_get_type and
cogl_shader_is_compiled. More getters can be added later if desired.
2009-05-12 14:53:44 +01:00

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->gles2.settings.user_program == (CoglHandle) program)
{
ctx->gles2.settings.user_program = COGL_INVALID_HANDLE;
ctx->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->gles2.settings.user_program = handle;
ctx->gles2.settings_dirty = TRUE;
}
int
cogl_program_get_uniform_location (CoglHandle handle,
const gchar *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,
gfloat value)
{
cogl_program_uniform_float (uniform_no, 1, 1, &value);
}
void
cogl_program_uniform_1i (int uniform_no,
gint value)
{
cogl_program_uniform_int (uniform_no, 1, 1, &value);
}
static void
cogl_program_uniform_x (int uniform_no,
gint size,
gint count,
CoglBoxedType type,
size_t 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->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->gles2.dirty_custom_uniforms |= 1 << uniform_no;
}
}
void
cogl_program_uniform_float (int uniform_no,
gint size,
gint 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,
gint size,
gint count,
const GLint *value)
{
cogl_program_uniform_x (uniform_no, size, count, COGL_BOXED_INT,
sizeof (gint) * size, value);
}
void
cogl_program_uniform_matrix (int uniform_no,
gint size,
gint count,
gboolean transpose,
const GLfloat *value)
{
CoglBoxedValue *bv;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
bv = ctx->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 gchar *uniform_name)
{
return 0;
}
void
cogl_program_uniform_1f (int uniform_no,
gfloat value)
{
}
void
cogl_program_uniform_float (int uniform_no,
gint size,
gint count,
const GLfloat *value)
{
}
void
cogl_program_uniform_int (int uniform_no,
gint size,
gint count,
const int *value)
{
}
void
cogl_program_uniform_matrix (int uniform_no,
gint size,
gint count,
gboolean transpose,
const GLfloat *value)
{
}
#endif /* HAVE_COGL_GLES2 */