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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#ifndef _GROPENGLTEXTURE_H
#define _GROPENGLTEXTURE_H
#include "globalincs/pstypes.h"
#include "graphics/gropengl.h"
#include "graphics/gropenglextension.h"
typedef struct tcache_slot_opengl {
GLuint texture_id;
GLenum texture_target;
GLenum wrap_mode;
float u_scale, v_scale;
int bitmap_handle;
int size;
ushort w, h;
ubyte bpp;
ubyte mipmap_levels;
tcache_slot_opengl() :
texture_id(0), texture_target(GL_TEXTURE_2D), wrap_mode(GL_REPEAT),
u_scale(1.0f), v_scale(1.0f), bitmap_handle(-1), size(0), w(0), h(0),
bpp(0), mipmap_levels(0)
{
}
void reset()
{
texture_id = 0;
texture_target = GL_TEXTURE_2D;
wrap_mode = GL_REPEAT;
u_scale = 1.0f;
v_scale = 1.0f;
bitmap_handle = -1;
size = 0;
w = 0;
h = 0;
bpp = 0;
mipmap_levels = 0;
}
} tcache_slot_opengl;
extern int GL_min_texture_width;
extern GLint GL_max_texture_width;
extern int GL_min_texture_height;
extern GLint GL_max_texture_height;
extern GLint GL_supported_texture_units;
extern int GL_mipmap_filter;
extern GLenum GL_texture_target;
extern GLenum GL_texture_face;
extern GLfloat GL_anisotropy;
extern bool GL_rendering_to_texture;
extern GLint GL_max_renderbuffer_size;
void opengl_switch_arb(int unit, int state);
void opengl_tcache_init();
void opengl_free_texture_slot(int n);
void opengl_tcache_flush();
void opengl_tcache_shutdown();
void opengl_tcache_frame();
void opengl_set_additive_tex_env();
void opengl_set_modulate_tex_env();
void opengl_preload_init();
GLfloat opengl_get_max_anisotropy();
void opengl_kill_render_target(int slot);
int opengl_make_render_target(int handle, int slot, int *w, int *h, ubyte *bpp, int *mm_lvl, int flags);
int opengl_set_render_target(int slot, int face = -1, int is_static = 0);
void gr_opengl_get_bitmap_from_texture(void* data_out, int bitmap_num);
int opengl_get_texture(GLenum target, GLenum pixel_format, GLenum data_format, int num_mipmaps, int width, int height, int bytes_per_pixel, void* image_data, int offset);
size_t opengl_export_render_target( int slot, int width, int height, int alpha, int num_mipmaps, ubyte *image_data );
void opengl_set_texture_target(GLenum target = GL_TEXTURE_2D);
void opengl_set_texture_face(GLenum face = GL_TEXTURE_2D);
int gr_opengl_tcache_set(int bitmap_handle, int bitmap_type, float *u_scale, float *v_scale, int stage = 0);
int gr_opengl_preload(int bitmap_num, int is_aabitmap);
void gr_opengl_set_texture_panning(float u, float v, bool enable);
void gr_opengl_set_texture_addressing(int mode);
GLuint opengl_get_rtt_framebuffer();
#endif //_GROPENGLTEXTURE_H
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