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82 lines
2.4 KiB
82 lines
2.4 KiB
2 years ago
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// 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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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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#pragma once
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#include <boost/utility.hpp>
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#include <stack>
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#if defined (SG_MAC)
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#include <OpenGL/gl.h>
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#elif defined (_GLES2)
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#include <GLES2/gl2.h>
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#else
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#include <GL/glew.h> // Must be included before <GL/gl.h>
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#include <GL/gl.h>
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#endif
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class GL_utils : private boost::noncopyable {
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public:
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static GL_utils& instance ();
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enum GLenum_Mode {
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GL_UTILS_MODELVIEW,
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GL_UTILS_PROJECTION,
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GL_UTILS_TEXTURE,
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GL_UTILS_COLOR,
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GL_UTILS_LAST,
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GL_UTILS_UNSET
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};
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GLuint load_program (const char *vert_shader_src, const char *frag_shader_src);
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void glMatrixMode (const GL_utils::GLenum_Mode mode);
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void glLoadIdentity ();
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void gluOrtho2D (const GLfloat left,
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const GLfloat right,
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const GLfloat bottom,
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const GLfloat top);
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void glOrtho (const GLfloat left,
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const GLfloat right,
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const GLfloat bottom,
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const GLfloat top,
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const GLfloat nearVal,
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const GLfloat farVal);
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void glTranslatef (const GLfloat x, const GLfloat y, const GLfloat z);
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void glRotatef (const GLfloat angle, const GLfloat x, const GLfloat y, const GLfloat z);
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void glScalef (const GLfloat x, const GLfloat y, const GLfloat z);
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// C' = C X M
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void glMultMatrixf (const GLfloat m[4][4]);
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void glPushMatrix ();
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void glPopMatrix ();
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GLfloat* get_top_matrix (const GL_utils::GLenum_Mode mode);
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void Debug (const GL_utils::GLenum_Mode mode) const;
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private:
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explicit GL_utils ();
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virtual ~GL_utils ();
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GLuint load_shader (GLenum type, const char *shader_src);
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typedef struct {
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GLfloat m[4][4];
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} Matrix;
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std::stack <Matrix> m_Matrix[GL_UTILS_LAST];
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GLenum_Mode m_Current_Matrix_Mode;
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};
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