src/sdl/ogl.hpp

   1 /*
   2  * Copyright (c) 2007-2013, Czirkos Zoltan http://code.google.com/p/gdash/
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  18  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
  19  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  20  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  21  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef NEWOGL_HPP_INCLUDED
  25 #define NEWOGL_HPP_INCLUDED
  26
  27 #include <SDL_opengl.h>
  28
  29 #include <glib.h>
  30 #include <string>
  31 #include <vector>
  32 #include "sdl/sdlabstractscreen.hpp"
  33
  34 class SDLNewOGLScreen: public SDLAbstractScreen {
  35 private:
  36     bool shader_support;
  37     bool timed_flips;
  38     double oglscaling;
  39
  40     GLuint glprogram;
  41     std::vector<GLuint> shaders;
  42     GLuint texture;
  43
  44     /// used when loading the xml
  45     std::string shadertext;
  46     static void start_element(GMarkupParseContext *context, const gchar *element_name, const gchar **attribute_names, const gchar **attribute_values, gpointer user_data, GError **error);
  47     static void end_element(GMarkupParseContext *context, const gchar *element_name, gpointer user_data, GError **error);
  48     static void text(GMarkupParseContext *context, const gchar *text, gsize text_len, gpointer user_data, GError **error);
  49
  50     void set_uniform_float(char const *name, GLfloat value);
  51     void set_uniform_2float(char const *name, GLfloat value1, GLfloat value2);
  52     void set_texture_bilinear(bool bilinear);
  53
  54 public:
  55     SDLNewOGLScreen(PixbufFactory &pixbuf_factory);
  56     virtual void set_properties(int scaling_factor_, GdScalingType scaling_type_, bool pal_emulation_);
  57     virtual void set_title(char const *);
  58     virtual void configure_size();
  59     virtual void flip();
  60     virtual bool has_timed_flips() const;
  61     void uninit();
  62     ~SDLNewOGLScreen();
  63     virtual Pixmap *create_pixmap_from_pixbuf(Pixbuf const &pb, bool keep_alpha) const;
  64 };
  65
  66 #endif