mutter/cogl/driver/gles/cogl-shader.c

223 lines
4.5 KiB
C
Raw Normal View History

2008-06-02 06:58:57 -04:00
/*
* Cogl
2008-06-02 06:58:57 -04:00
*
* An object oriented GL/GLES Abstraction/Utility Layer
2008-06-02 06:58:57 -04:00
*
* Copyright (C) 2008,2009 Intel Corporation.
2008-06-02 06:58:57 -04:00
*
* 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/>.
*
*
2008-06-02 06:58:57 -04:00
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-shader-private.h"
2008-06-02 06:58:57 -04:00
#include "cogl-internal.h"
#include "cogl-context.h"
#include "cogl-handle.h"
#ifdef HAVE_COGL_GLES2
static void _cogl_shader_free (CoglShader *shader);
COGL_HANDLE_DEFINE (Shader, shader);
COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (shader);
2008-06-02 06:58:57 -04:00
static void
_cogl_shader_free (CoglShader *shader)
{
/* Frees shader resources but its handle is not
released! Do that separately before this! */
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
glDeleteShader (shader->gl_handle);
}
CoglHandle
cogl_create_shader (CoglShaderType type)
2008-06-02 06:58:57 -04:00
{
CoglShader *shader;
GLenum gl_type;
if (type == COGL_SHADER_TYPE_VERTEX)
gl_type = GL_VERTEX_SHADER;
else if (type == COGL_SHADER_TYPE_FRAGMENT)
gl_type = GL_FRAGMENT_SHADER;
else
{
g_warning ("Unexpected shader type (0x%08lX) given to "
"cogl_create_shader", (unsigned long) type);
return COGL_INVALID_HANDLE;
}
2008-06-02 06:58:57 -04:00
shader = g_slice_new (CoglShader);
shader->gl_handle = glCreateShader (gl_type);
2008-06-02 06:58:57 -04:00
return _cogl_shader_handle_new (shader);
}
void
cogl_shader_source (CoglHandle handle,
const char *source)
2008-06-02 06:58:57 -04:00
{
CoglShader *shader;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
2008-06-02 06:58:57 -04:00
if (!cogl_is_shader (handle))
return;
shader = _cogl_shader_pointer_from_handle (handle);
glShaderSource (shader->gl_handle, 1, &source, NULL);
}
void
cogl_shader_compile (CoglHandle handle)
{
CoglShader *shader;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (!cogl_is_shader (handle))
return;
shader = _cogl_shader_pointer_from_handle (handle);
glCompileShader (shader->gl_handle);
}
cogl: improves header and coding style consistency 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.
2010-02-09 20:57:32 -05:00
char *
cogl_shader_get_info_log (CoglHandle handle)
2008-06-02 06:58:57 -04:00
{
CoglShader *shader;
char buffer[512];
int len = 0;
_COGL_GET_CONTEXT (ctx, NULL);
2008-06-02 06:58:57 -04:00
if (!cogl_is_shader (handle))
return NULL;
2008-06-02 06:58:57 -04:00
shader = _cogl_shader_pointer_from_handle (handle);
glGetShaderInfoLog (shader->gl_handle, 511, &len, buffer);
2008-06-02 06:58:57 -04:00
buffer[len] = '\0';
return g_strdup (buffer);
2008-06-02 06:58:57 -04:00
}
CoglShaderType
cogl_shader_get_type (CoglHandle handle)
2008-06-02 06:58:57 -04:00
{
GLint type;
2008-06-02 06:58:57 -04:00
CoglShader *shader;
if (!cogl_is_shader (handle))
{
g_warning ("Non shader handle type passed to cogl_shader_get_type");
return COGL_SHADER_TYPE_VERTEX;
}
shader = _cogl_shader_pointer_from_handle (handle);
GE (glGetShaderiv (shader->gl_handle, GL_SHADER_TYPE, &type));
if (type == GL_VERTEX_SHADER)
return COGL_SHADER_TYPE_VERTEX;
else if (type == GL_FRAGMENT_SHADER)
return COGL_SHADER_TYPE_VERTEX;
else
{
g_warning ("Unexpected shader type 0x%08lX", (unsigned long)type);
return COGL_SHADER_TYPE_VERTEX;
}
}
gboolean
cogl_shader_is_compiled (CoglHandle handle)
{
GLint status;
CoglShader *shader;
if (!cogl_is_shader (handle))
return FALSE;
2008-06-02 06:58:57 -04:00
shader = _cogl_shader_pointer_from_handle (handle);
GE (glGetShaderiv (shader->gl_handle, GL_COMPILE_STATUS, &status));
if (status == GL_TRUE)
return TRUE;
else
return FALSE;
2008-06-02 06:58:57 -04:00
}
#else /* HAVE_COGL_GLES2 */
/* No support on regular OpenGL 1.1 */
CoglHandle
cogl_create_shader (CoglShaderType type)
2008-06-02 06:58:57 -04:00
{
return COGL_INVALID_HANDLE;
}
gboolean
cogl_is_shader (CoglHandle handle)
{
return FALSE;
}
CoglHandle
cogl_shader_ref (CoglHandle handle)
{
return COGL_INVALID_HANDLE;
}
void
cogl_shader_unref (CoglHandle handle)
{
}
void
cogl_shader_source (CoglHandle shader,
const char *source)
2008-06-02 06:58:57 -04:00
{
}
void
cogl_shader_compile (CoglHandle shader_handle)
{
}
cogl: improves header and coding style consistency 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.
2010-02-09 20:57:32 -05:00
char *
cogl_shader_get_info_log (CoglHandle handle)
2008-06-02 06:58:57 -04:00
{
return NULL;
2008-06-02 06:58:57 -04:00
}
CoglShaderType
cogl_shader_get_type (CoglHandle handle)
2008-06-02 06:58:57 -04:00
{
return COGL_SHADER_TYPE_VERTEX;
}
gboolean
cogl_shader_is_compiled (CoglHandle handle)
{
return FALSE;
2008-06-02 06:58:57 -04:00
}
#endif /* HAVE_COGL_GLES2 */