256 lines
7.0 KiB
C
256 lines
7.0 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) 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-program.h"
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#include "cogl-shader-private.h"
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#include "cogl-internal.h"
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#include "cogl-handle.h"
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#include "cogl-context.h"
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#include "cogl-journal-private.h"
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#include <glib.h>
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#define glCreateProgramObject ctx->drv.pf_glCreateProgramObject
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#define glAttachObject ctx->drv.pf_glAttachObject
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#define glUseProgramObject ctx->drv.pf_glUseProgramObject
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#define glLinkProgram ctx->drv.pf_glLinkProgram
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#define glGetUniformLocation ctx->drv.pf_glGetUniformLocation
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#define glUniform1f ctx->drv.pf_glUniform1f
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#define glUniform2f ctx->drv.pf_glUniform2f
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#define glUniform3f ctx->drv.pf_glUniform3f
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#define glUniform4f ctx->drv.pf_glUniform4f
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#define glUniform1fv ctx->drv.pf_glUniform1fv
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#define glUniform2fv ctx->drv.pf_glUniform2fv
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#define glUniform3fv ctx->drv.pf_glUniform3fv
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#define glUniform4fv ctx->drv.pf_glUniform4fv
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#define glUniform1i ctx->drv.pf_glUniform1i
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#define glUniform2i ctx->drv.pf_glUniform2i
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#define glUniform3i ctx->drv.pf_glUniform3i
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#define glUniform4i ctx->drv.pf_glUniform4i
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#define glUniform1iv ctx->drv.pf_glUniform1iv
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#define glUniform2iv ctx->drv.pf_glUniform2iv
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#define glUniform3iv ctx->drv.pf_glUniform3iv
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#define glUniform4iv ctx->drv.pf_glUniform4iv
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#define glUniformMatrix2fv ctx->drv.pf_glUniformMatrix2fv
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#define glUniformMatrix3fv ctx->drv.pf_glUniformMatrix3fv
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#define glUniformMatrix4fv ctx->drv.pf_glUniformMatrix4fv
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#define glDeleteObject ctx->drv.pf_glDeleteObject
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static void _cogl_program_free (CoglProgram *program);
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COGL_HANDLE_DEFINE (Program, program);
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static void
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_cogl_program_free (CoglProgram *program)
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{
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/* Frees program 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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glDeleteObject (program->gl_handle);
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}
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CoglHandle
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cogl_create_program (void)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, 0);
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program = g_slice_new (CoglProgram);
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program->gl_handle = glCreateProgramObject ();
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return _cogl_program_handle_new (program);
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}
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void
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cogl_program_attach_shader (CoglHandle program_handle,
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CoglHandle shader_handle)
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{
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CoglProgram *program;
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CoglShader *shader;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (!cogl_is_program (program_handle) || !cogl_is_shader (shader_handle))
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return;
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program = _cogl_program_pointer_from_handle (program_handle);
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shader = _cogl_shader_pointer_from_handle (shader_handle);
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glAttachObject (program->gl_handle, shader->gl_handle);
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}
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void
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cogl_program_link (CoglHandle handle)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (!cogl_is_program (handle))
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return;
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program = _cogl_program_pointer_from_handle (handle);
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glLinkProgram (program->gl_handle);
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}
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void
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cogl_program_use (CoglHandle handle)
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{
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CoglProgram *program;
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GLhandleARB gl_handle;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (handle != COGL_INVALID_HANDLE && !cogl_is_program (handle))
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return;
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/* The Cogl journal doesn't currently cope with the use of
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* shaders so we have to flush all priitives whenever the
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* current shader changes... */
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_cogl_journal_flush ();
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if (handle == COGL_INVALID_HANDLE)
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gl_handle = 0;
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else
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{
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program = _cogl_program_pointer_from_handle (handle);
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gl_handle = program->gl_handle;
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}
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glUseProgramObject (gl_handle);
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}
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int
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cogl_program_get_uniform_location (CoglHandle handle,
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const char *uniform_name)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, 0);
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if (!cogl_is_program (handle))
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return 0;
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program = _cogl_program_pointer_from_handle (handle);
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return glGetUniformLocation (program->gl_handle, uniform_name);
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}
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void
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cogl_program_uniform_1f (int uniform_no,
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float value)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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glUniform1f (uniform_no, value);
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}
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void
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cogl_program_uniform_1i (int uniform_no,
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int value)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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glUniform1i (uniform_no, value);
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}
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void
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cogl_program_uniform_float (int uniform_no,
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int size,
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int count,
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const GLfloat *value)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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switch (size)
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{
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case 1:
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glUniform1fv (uniform_no, count, value);
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break;
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case 2:
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glUniform2fv (uniform_no, count, value);
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break;
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case 3:
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glUniform3fv (uniform_no, count, value);
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break;
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case 4:
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glUniform4fv (uniform_no, count, value);
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break;
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default:
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g_warning ("%s called with invalid size parameter", G_STRFUNC);
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}
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}
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void
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cogl_program_uniform_int (int uniform_no,
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int size,
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int count,
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const int *value)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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switch (size)
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{
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case 1:
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glUniform1iv (uniform_no, count, value);
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break;
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case 2:
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glUniform2iv (uniform_no, count, value);
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break;
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case 3:
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glUniform3iv (uniform_no, count, value);
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break;
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case 4:
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glUniform4iv (uniform_no, count, value);
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break;
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default:
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g_warning ("%s called with invalid size parameter", G_STRFUNC);
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}
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}
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void
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cogl_program_uniform_matrix (int uniform_no,
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int size,
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int count,
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gboolean transpose,
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const GLfloat *value)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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switch (size)
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{
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case 2 :
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glUniformMatrix2fv (uniform_no, count, transpose, value);
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break;
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case 3 :
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glUniformMatrix3fv (uniform_no, count, transpose, value);
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break;
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case 4 :
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glUniformMatrix4fv (uniform_no, count, transpose, value);
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break;
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default :
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g_warning ("%s called with invalid size parameter", G_STRFUNC);
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}
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}
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