68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
#pragma once
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#include <SDL.h>
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#include <SDL_opengl.h>
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#include "physics.h"
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// Recommended for compatibility bullshit.
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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# define RMASK 0xff000000
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# define GMASK 0x00ff0000
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# define BMASK 0x0000ff00
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# define AMASK 0x000000ff
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#else
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# define RMASK 0x000000ff
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# define GMASK 0x0000ff00
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# define BMASK 0x00ff0000
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# define AMASK 0xff000000
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#endif
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#define RGBMASK RMASK,GMASK,BMASK,AMASK
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// Info about opengl screen.
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typedef struct {
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int w, h; // Window dimensions.
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int depth; // Depth in bpp.
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int fullscreen; // 1 = fullscreen, 0 = windowed.
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int r, g, b, a; // Framebuffer values in bits.
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int doublebuf; // Double buffer.
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} gl_info;
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extern gl_info gl_screen; // Local structure set with gl_init etc.
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// Spritesheet info.
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typedef struct {
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double w, h; // Real size of the image (excluding POT buffer.
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double rw, rh; // Size of POT surface.
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double sx, sy; // Number of sprites on x and y axes.
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double sw, sh; // Size of each sprite.
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GLuint texture; // The opengl texture itself.
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} gl_texture;
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// Font info.
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typedef struct {
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float h; // Height.
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GLuint* textures;
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GLuint list_base;
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} gl_font;
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// gl_font loading/freeing.
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// If font is NULL it uses the internal default font, same with gl_print
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void gl_fontInit(gl_font* font, const char* fname, unsigned int h);
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void gl_freeFont(gl_font* font);
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// gl_texute loading/freeing.
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gl_texture* gl_loadImage(SDL_Surface* surface); // Frees the surface.
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gl_texture* gl_newImage(const char* path);
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gl_texture* gl_newSprite(const char* path, const int sx, const int sy);
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void gl_freeTexture(gl_texture* texture);
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// Rendering.
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void gl_blitSprite(const gl_texture* sprite, const Vec2* pos, const int sx, const int sy);
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void gl_blitStatic(const gl_texture* texture, const Vec2* pos);
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void gl_bindCamera(const Vec2* pos);
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void gl_print(const gl_font* ft_font, const Vec2* pos, const char* fmt, ...);
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// Initialize/cleanup.
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int gl_init(void);
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void gl_exit(void);
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