95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
#ifndef __GTK_DISPLAY_DRIVER_OPENGL_H
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#define __GTK_DISPLAY_DRIVER_OPENGL_H
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#include "gtk_s9x.h"
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#include "gtk_display_driver.h"
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#include <epoxy/gl.h>
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#include "gtk_opengl_context.h"
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#ifdef GDK_WINDOWING_X11
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#include "gtk_glx_context.h"
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#endif
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#ifdef GDK_WINDOWING_WAYLAND
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#include "gtk_wayland_egl_context.h"
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#endif
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#include "shaders/glsl.h"
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#define PBO_FMT_16 0
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#define PBO_FMT_24 1
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#define PBO_FMT_32 2
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#define BUFFER_OFFSET(i) ((char *) NULL + (i))
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#ifdef __BIG_ENDIAN__
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/* We have to reverse the bytes on MSB systems. This can be slow */
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/* GL_UNSIGNED_INT_8_8_8_8_REV = 0x8367 */
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#define PBO_BGRA_NATIVE_ORDER 0x8367
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#else
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#define PBO_BGRA_NATIVE_ORDER GL_UNSIGNED_BYTE
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#endif
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#define PBO_GET_FORMAT(x) (((x) == PBO_FMT_32) ? GL_BGRA : GL_RGB)
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#define PBO_GET_PACKING(x) (((x) == PBO_FMT_16) ? GL_UNSIGNED_SHORT_5_6_5 : (((x) == PBO_FMT_24) ? GL_UNSIGNED_BYTE : PBO_BGRA_NATIVE_ORDER))
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class S9xOpenGLDisplayDriver : public S9xDisplayDriver
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{
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public:
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S9xOpenGLDisplayDriver (Snes9xWindow *window, Snes9xConfig *config);
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void refresh (int width, int height);
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int init ();
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void deinit ();
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void clear_buffers ();
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void update (int width, int height, int yoffset);
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uint16 *get_next_buffer ();
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uint16 *get_current_buffer ();
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void push_buffer (uint16 *src);
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void reconfigure (int width, int height);
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void *get_parameters ();
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void save (const char *filename);
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static int query_availability ();
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private:
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int opengl_defaults ();
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void swap_buffers ();
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int pbos_available ();
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int shaders_available ();
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int load_shaders (const char *);
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void update_texture_size (int width, int height);
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int init_gl ();
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void resize ();
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GLint texture_width;
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GLint texture_height;
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GLfloat vertices[8];
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GLfloat texcoords[8];
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GLuint texmap;
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GLuint pbo;
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GLuint program;
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GLuint fragment_shader;
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GLuint vertex_shader;
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int dyn_resizing;
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int using_pbos;
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int using_shaders;
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int initialized;
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int using_glsl_shaders;
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GLSLShader *glsl_shader;
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GdkWindow *gdk_window;
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int output_window_width;
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int output_window_height;
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OpenGLContext *context;
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#ifdef GDK_WINDOWING_X11
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GTKGLXContext glx;
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#endif
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#ifdef GDK_WINDOWING_WAYLAND
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WaylandEGLContext wl;
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#endif
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};
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#endif /* __GTK_DISPLAY_DRIVER_OPENGL_H */
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