mirror of
https://github.com/nunuhara/xsystem4.git
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Nunuhara Cabbage
f164480f35
Enough to get text on the screen, but it isn't pretty. No antialiasing, kerning, vertical placement isn't correct, probably the size isn't even quite correct, etc.
190 lines
6.7 KiB
C
190 lines
6.7 KiB
C
/* Copyright (C) 2019 Nunuhara Cabbage <nunuhara@haniwa.technology>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://gnu.org/licenses/>.
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*/
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#ifndef SYSTEM4_GFX_CORE_H
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#define SYSTEM4_GFX_CORE_H
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#include <stdbool.h>
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#include <stdint.h>
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#include <SDL.h>
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#include <GL/glew.h>
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#include "gfx/types.h"
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struct cg;
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struct text_metrics;
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enum draw_method {
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DRAW_METHOD_NORMAL = 0,
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DRAW_METHOD_SCREEN = 1,
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DRAW_METHOD_MULTIPLY = 2,
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NR_DRAW_METHODS
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};
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typedef struct texture {
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GLuint handle;
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GLfloat world_transform[16];
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int w, h;
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bool has_alpha;
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int alpha_mod;
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enum draw_method draw_method;
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} Texture;
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struct gfx_render_job;
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typedef struct shader {
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GLuint program;
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// variables
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GLuint world_transform;
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GLuint view_transform;
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GLuint texture;
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GLuint vertex;
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GLuint alpha_mod;
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void (*prepare)(struct gfx_render_job *, void *);
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} Shader;
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struct gfx_render_job {
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struct shader *shader;
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GLuint texture;
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GLfloat *world_transform;
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GLfloat *view_transform;
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void *data;
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};
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int gfx_init(void);
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void gfx_fini(void);
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Texture *gfx_main_surface(void);
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void gfx_set_window_size(int w, int h);
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void gfx_fullscreen(bool on);
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void gfx_set_wait_vsync(bool wait);
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void gfx_load_shader(struct shader *dst, const char *vertex_shader_path, const char *fragment_shader_path);
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// rendering
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void gfx_set_clear_color(int r, int g, int b, int a);
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void gfx_clear(void);
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void gfx_swap(void);
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void gfx_prepare_job(struct gfx_render_job *job);
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void gfx_run_job(struct gfx_render_job *job);
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void gfx_render(struct gfx_render_job *job);
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void gfx_render_texture(struct texture *t, Rectangle *r);
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int gfx_render_text(Texture *dst, Point pos, char *msg, struct text_metrics *tm);
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// texture management
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void gfx_init_texture_blank(struct texture *t, int w, int h);
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void gfx_init_texture_with_cg(struct texture *t, struct cg *cg);
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void gfx_init_texture_with_color(struct texture *t, int w, int h, SDL_Color color);
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void gfx_init_texture_with_pixels(struct texture *t, int w, int h, void *pixels, GLenum format);
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void gfx_copy_main_surface(struct texture *dst);
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void gfx_delete_texture(struct texture *t);
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GLuint gfx_set_framebuffer(GLenum target, Texture *t, int x, int y, int w, int h);
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void gfx_reset_framebuffer(GLenum target, GLuint fbo);
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SDL_Color gfx_get_pixel(Texture *t, int x, int y);
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// drawing
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void gfx_draw_init(void);
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void gfx_copy(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h);
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void gfx_copy_bright(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h, int rate);
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void gfx_copy_amap(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h);
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void gfx_copy_sprite(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h, SDL_Color color);
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void gfx_copy_use_amap_under(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h, int threshold);
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void gfx_copy_use_amap_border(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h, int threshold);
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void gfx_copy_amap_max(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h);
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void gfx_copy_amap_min(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h);
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void gfx_blend_amap(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h);
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void gfx_blend_amap_alpha(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h, int a);
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void gfx_fill(struct texture *dst, int x, int y, int w, int h, int r, int g, int b);
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void gfx_fill_alpha_color(struct texture *dst, int x, int y, int w, int h, int r, int g, int b, int a);
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void gfx_fill_amap(struct texture *dst, int x, int y, int w, int h, int a);
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void gfx_add_da_daxsa(struct texture *dst, int dx, int dy, struct texture *src, int sx, int sy, int w, int h);
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void gfx_copy_stretch(struct texture *dst, int dx, int dy, int dw, int dh, struct texture *src, int sx, int sy, int sw, int sh);
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void gfx_copy_stretch_amap(struct texture *dst, int dx, int dy, int dw, int dh, struct texture *src, int sx, int sy, int sw, int sh);
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void gfx_copy_rot_zoom(Texture *dst, Texture *src, int sx, int sy, int w, int h, float rotate, float mag);
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void gfx_copy_rot_zoom_amap(Texture *dst, Texture *src, int sx, int sy, int w, int h, float rotate, float mag);
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void gfx_copy_rot_zoom_use_amap(Texture *dst, Texture *src, int sx, int sy, int w, int h, float rotate, float mag);
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void gfx_copy_reverse_LR(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h);
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void gfx_copy_reverse_amap_LR(Texture *dst, int dx, int dy, Texture *src, int sx, int sy, int w, int h);
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enum font_weight {
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FW_NORMAL = 400,
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FW_BOLD = 700,
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FW_NORMAL2 = 1400,
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FW_BOLD2 = 1700
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};
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enum font_face {
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FONT_GOTHIC = 0,
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FONT_MINCHO = 1
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};
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struct text_metrics {
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SDL_Color color;
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SDL_Color outline_color;
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unsigned int size;
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enum font_weight weight;
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enum font_face face;
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int outline_left;
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int outline_up;
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int outline_right;
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int outline_down;
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};
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struct font_metrics {
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int size;
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enum font_face face;
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int weight;
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bool underline;
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bool strikeout;
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int space;
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SDL_Color color;
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};
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void gfx_font_init(void);
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bool gfx_set_font(enum font_face face, unsigned int size);
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bool gfx_set_font_size(unsigned int size);
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bool gfx_set_font_face(enum font_face face);
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bool gfx_set_font_weight(enum font_weight weight);
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bool gfx_set_font_underline(bool on);
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bool gfx_set_font_strikeout(bool on);
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bool gfx_set_font_space(int space);
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bool gfx_set_font_color(SDL_Color color);
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int gfx_get_font_size(void);
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enum font_face gfx_get_font_face(void);
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enum font_weight gfx_get_font_weight(void);
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bool gfx_get_font_underline(void);
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bool gfx_get_font_strikeout(void);
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int gfx_get_font_space(void);
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SDL_Color gfx_get_font_color(void);
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int gfx_render_text(Texture *dst, Point pos, char *msg, struct text_metrics *tm);
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void gfx_draw_text_to_amap(Texture *dst, int x, int y, char *text);
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void gfx_draw_text_to_pmap(Texture *dst, int x, int y, char *text);
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struct fnl_font_inst {
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struct fnl_font_face *font;
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float scale;
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SDL_Color color;
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SDL_Color outline_color;
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int outline_size;
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};
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struct fnl_font_face;
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int fnl_draw_text(struct fnl_font_inst *font, Texture *dst, int x, int y, char *text);
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#endif /* SYSTEM4_SDL_CORE_H */
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