mirror of https://github.com/snes9xgit/snes9x.git
98 lines
3.4 KiB
C
98 lines
3.4 KiB
C
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#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 <GL/gl.h>
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#include <GL/glx.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 GL_PIXEL_UNPACK_BUFFER 0x88EC
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#define GL_WRITE_ONLY 0x88B9
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#define GL_STREAM_DRAW 0x88E0
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#define GL_TEXTURE_RECTANGLE 0x84F5
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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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/* The following are procedure pointer types.
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* These aren't necessarily guaranteed to be in GL 1.1 */
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typedef int (*glSwapIntervalProc) (int interval);
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typedef void (*gl_proc) (void);
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typedef gl_proc (*getProcAddressProc) (const GLubyte *name);
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typedef void (*glGenBuffersProc) (GLsizei n, GLuint *buffers);
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typedef void (*glDeleteBuffersProc) (GLsizei n, const GLuint *buffers);
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typedef void (*glBindBufferProc) (GLenum target, GLuint buffer);
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typedef void (*glBufferDataProc) (GLenum target,
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GLsizeiptr size,
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const GLvoid *data,
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GLenum usage);
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typedef void (*glBufferSubDataProc) (GLenum target,
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GLintptr offset,
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GLsizeiptr size,
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const GLvoid *data);
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typedef GLvoid *(*glMapBufferProc) (GLenum target, GLenum access);
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typedef GLboolean (*glUnmapBufferProc) (GLenum target);
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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 (void);
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void deinit (void);
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void clear_buffers (void);
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void update (int width, int height);
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uint16 *get_next_buffer (void);
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uint16 *get_current_buffer (void);
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void push_buffer (uint16 *src);
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void reconfigure (int width, int height);
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static int query_availability (void);
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private:
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void opengl_defaults (void);
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void swap_control (int enable);
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void gl_lock (void);
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void gl_unlock (void);
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void gl_swap (void);
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int load_pixel_buffer_functions (void);
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gl_proc get_aliased_extension (const char **name);
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void update_texture_size (int width, int height);
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getProcAddressProc glGetProcAddress;
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glGenBuffersProc glGenBuffers;
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glBindBufferProc glBindBuffer;
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glBufferDataProc glBufferData;
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glBufferSubDataProc glBufferSubData;
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glMapBufferProc glMapBuffer;
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glUnmapBufferProc glUnmapBuffer;
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glDeleteBuffersProc glDeleteBuffers;
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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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GLenum tex_target;
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int dyn_resizing;
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int filtering;
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int using_pbos;
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GLXContext glx_context;
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};
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#endif /* __GTK_DISPLAY_DRIVER_OPENGL_H */
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