181 lines
3.3 KiB
C
181 lines
3.3 KiB
C
/*
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* Mr. 4th Dimention - Allen Webster
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*
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* 17.12.2014
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*
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* Rendering layer for project codename "4ed"
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*
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*/
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// TOP
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#ifndef FRED_RENDERING_H
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#define FRED_RENDERING_H
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//
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// Fonts
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//
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#include "file/4coder_font_data.h"
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struct Font_Table_Entry{
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u32 hash;
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String name;
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i16 font_id;
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};
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struct Font_Info{
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Render_Font *font;
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String filename;
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String name;
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i32 pt_size;
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};
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struct Font_Slot{
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Font_Slot *next, *prev;
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i16 font_id;
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u8 padding[6];
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};
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#define Font_Load_Sig(name) i32 name(Render_Font *font_out, char *filename, char *fontname, i32 pt_size, i32 tab_width, b32 store_texture)
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typedef Font_Load_Sig(Font_Load);
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#define Release_Font_Sig(name) void name(Render_Font *font)
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typedef Release_Font_Sig(Release_Font);
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struct Font_Set{
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Font_Info *info;
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Font_Table_Entry *entries;
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u32 count, max;
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void *font_block;
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Font_Slot free_slots;
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Font_Slot used_slots;
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Font_Load *font_load;
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Release_Font *release_font;
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b8 *font_used_flags;
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i16 used_this_frame;
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i16 live_max;
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};
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//
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// Render Commands
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//
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enum Render_Piece_Type{
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piece_type_rectangle,
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piece_type_outline,
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piece_type_gradient,
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piece_type_glyph,
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piece_type_mono_glyph,
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piece_type_mono_glyph_advance,
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piece_type_change_clip
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};
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struct Render_Piece_Header{
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i32 type;
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};
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struct Render_Piece_Rectangle{
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f32_Rect rect;
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u32 color;
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};
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struct Render_Piece_Gradient{
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f32_Rect rect;
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u32 left_color;
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u32 right_color;
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};
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struct Render_Piece_Glyph{
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Vec2 pos;
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u32 color;
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i16 font_id;
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u8 character;
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};
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struct Render_Piece_Glyph_Advance{
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Vec2 pos;
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u32 color;
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f32 advance;
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i16 font_id;
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u8 character;
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};
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struct Render_Piece_Change_Clip{
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i32_Rect box;
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};
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struct Render_Piece_Combined{
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Render_Piece_Header header;
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union{
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Render_Piece_Rectangle rectangle;
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Render_Piece_Gradient gradient;
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Render_Piece_Glyph glyph;
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Render_Piece_Glyph_Advance glyph_advance;
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};
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};
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struct Render_Target;
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#define Draw_Push_Clip_Sig(name) void name(Render_Target *target, i32_Rect clip_box)
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typedef Draw_Push_Clip_Sig(Draw_Push_Clip);
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#define Draw_Pop_Clip_Sig(name) i32_Rect name(Render_Target *target)
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typedef Draw_Pop_Clip_Sig(Draw_Pop_Clip);
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#define Draw_Push_Piece_Sig(name) void name(Render_Target *target, Render_Piece_Combined piece)
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typedef Draw_Push_Piece_Sig(Draw_Push_Piece);
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//
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// Render target stuff
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//
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struct Render_Target{
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void *handle;
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void *context;
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i32_Rect clip_boxes[5];
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i32 clip_top;
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b32 clip_all;
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i32 width, height;
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i32 bound_texture;
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u32 color;
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// TODO(allen): change this to a Partition
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char *push_buffer;
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i32 size, max;
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Draw_Push_Clip *push_clip;
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Draw_Pop_Clip *pop_clip;
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Draw_Push_Piece *push_piece;
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// TODO(allen): Does the font set really belong here? Actually, do we still want it at all?
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Font_Set font_set;
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Partition *partition;
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};
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#define DpiMultiplier(n,dpi) ((n) * (dpi) / 96)
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inline i32_Rect
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rect_from_target(Render_Target *target){
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i32_Rect r;
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r.x0 = 0;
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r.y0 = 0;
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r.x1 = target->width;
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r.y1 = target->height;
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return(r);
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}
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inline Font_Info*
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get_font_info(Font_Set *set, i16 font_id){
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Font_Info *result = set->info + font_id - 1;
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return(result);
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}
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#endif
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// BOTTOM
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