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

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/*
* Cogl
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*
* An object oriented GL/GLES Abstraction/Utility Layer
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*
* Copyright (C) 2008,2009 Intel Corporation.
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*
* 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-shader-private.h"
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#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);
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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 (COGLenum shaderType)
{
CoglShader *shader;
_COGL_GET_CONTEXT (ctx, 0);
shader = g_slice_new (CoglShader);
shader->gl_handle = glCreateShader (shaderType);
shader->type = shaderType;
return _cogl_shader_handle_new (shader);
}
void
cogl_shader_source (CoglHandle handle,
const gchar *source)
{
CoglShader *shader;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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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);
}
void
cogl_shader_get_info_log (CoglHandle handle,
guint size,
gchar *buffer)
{
CoglShader *shader;
COGLint len = 0;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (!cogl_is_shader (handle))
return;
shader = _cogl_shader_pointer_from_handle (handle);
glGetShaderInfoLog (shader->gl_handle, size - 1, &len, buffer);
buffer[len] = '\0';
}
void
cogl_shader_get_parameteriv (CoglHandle handle,
COGLenum pname,
COGLint *dest)
{
CoglShader *shader;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (!cogl_is_shader (handle))
return;
shader = _cogl_shader_pointer_from_handle (handle);
glGetShaderiv (shader->gl_handle, pname, dest);
}
#else /* HAVE_COGL_GLES2 */
/* No support on regular OpenGL 1.1 */
CoglHandle
cogl_create_shader (COGLenum shaderType)
{
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 gchar *source)
{
}
void
cogl_shader_compile (CoglHandle shader_handle)
{
}
void
cogl_shader_get_info_log (CoglHandle handle,
guint size,
gchar *buffer)
{
}
void
cogl_shader_get_parameteriv (CoglHandle handle,
COGLenum pname,
COGLint *dest)
{
}
#endif /* HAVE_COGL_GLES2 */