6db0d42193
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cogl_shader_get_parameteriv has been replaced by cogl_shader_get_type and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.
176 lines
4.4 KiB
C
176 lines
4.4 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2007,2008,2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl.h"
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#include "cogl-shader-private.h"
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#include "cogl-internal.h"
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#include "cogl-context.h"
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#include "cogl-handle.h"
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#include <glib.h>
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/* Expecting ARB functions not to be defined */
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#define glCreateShaderObjectARB ctx->pf_glCreateShaderObjectARB
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#define glGetObjectParameterivARB ctx->pf_glGetObjectParameterivARB
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#define glGetInfoLogARB ctx->pf_glGetInfoLogARB
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#define glCompileShaderARB ctx->pf_glCompileShaderARB
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#define glShaderSourceARB ctx->pf_glShaderSourceARB
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#define glDeleteObjectARB ctx->pf_glDeleteObjectARB
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static void _cogl_shader_free (CoglShader *shader);
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COGL_HANDLE_DEFINE (Shader, shader);
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static void
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_cogl_shader_free (CoglShader *shader)
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{
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/* Frees shader resources but its handle is not
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released! Do that separately before this! */
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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glDeleteObjectARB (shader->gl_handle);
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}
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CoglHandle
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cogl_create_shader (CoglShaderType type)
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{
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CoglShader *shader;
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GLenum gl_type;
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_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
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if (type == COGL_SHADER_TYPE_VERTEX)
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gl_type = GL_VERTEX_SHADER;
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else if (type == COGL_SHADER_TYPE_FRAGMENT)
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gl_type = GL_FRAGMENT_SHADER;
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else
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{
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g_warning ("Unexpected shader type (0x%08lX) given to "
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"cogl_create_shader", (unsigned long) type);
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return COGL_INVALID_HANDLE;
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}
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shader = g_slice_new (CoglShader);
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shader->gl_handle = glCreateShaderObjectARB (gl_type);
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return _cogl_shader_handle_new (shader);
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}
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void
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cogl_shader_source (CoglHandle handle,
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const char *source)
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{
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CoglShader *shader;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (!cogl_is_shader (handle))
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return;
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shader = _cogl_shader_pointer_from_handle (handle);
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glShaderSourceARB (shader->gl_handle, 1, &source, NULL);
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}
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void
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cogl_shader_compile (CoglHandle handle)
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{
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CoglShader *shader;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (!cogl_is_shader (handle))
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return;
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shader = _cogl_shader_pointer_from_handle (handle);
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glCompileShaderARB (shader->gl_handle);
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}
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void
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cogl_shader_get_info_log (CoglHandle handle,
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size_t size,
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char *buffer)
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{
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CoglShader *shader;
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int len;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (!cogl_is_shader (handle))
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return;
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shader = _cogl_shader_pointer_from_handle (handle);
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glGetInfoLogARB (shader->gl_handle, size-1, &len, buffer);
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buffer[len]='\0';
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}
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CoglShaderType
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cogl_shader_get_type (CoglHandle handle)
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{
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GLint type;
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CoglShader *shader;
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_COGL_GET_CONTEXT (ctx, COGL_SHADER_TYPE_VERTEX);
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if (!cogl_is_shader (handle))
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{
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g_warning ("Non shader handle type passed to cogl_shader_get_type");
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return COGL_SHADER_TYPE_VERTEX;
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}
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shader = _cogl_shader_pointer_from_handle (handle);
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GE (glGetObjectParameterivARB (shader->gl_handle, GL_SHADER_TYPE, &type));
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if (type == GL_VERTEX_SHADER)
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return COGL_SHADER_TYPE_VERTEX;
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else if (type == GL_FRAGMENT_SHADER)
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return COGL_SHADER_TYPE_VERTEX;
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else
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{
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g_warning ("Unexpected shader type 0x%08lX", (unsigned long)type);
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return COGL_SHADER_TYPE_VERTEX;
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}
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}
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gboolean
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cogl_shader_is_compiled (CoglHandle handle)
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{
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GLint status;
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CoglShader *shader;
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_COGL_GET_CONTEXT (ctx, FALSE);
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if (!cogl_is_shader (handle))
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return FALSE;
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shader = _cogl_shader_pointer_from_handle (handle);
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GE (glGetObjectParameterivARB (shader->gl_handle, GL_COMPILE_STATUS, &status));
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if (status == GL_TRUE)
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return TRUE;
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else
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return FALSE;
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}
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