4coder/4ed_render_format.cpp

226 lines
7.0 KiB
C++

/*
* Mr. 4th Dimention - Allen Webster
*
* 10.11.2017
*
* Render buffer fill helpers.
*
*/
// TOP
internal void
draw_push_clip(Render_Target *target, i32_Rect clip_box){
render_push_clip(target, clip_box);
}
internal i32_Rect
draw_pop_clip(Render_Target *target){
i32_Rect result = render_pop_clip(target);
return(result);
}
internal void
draw_change_clip(Render_Target *target, i32_Rect clip_box){
render_change_clip(target, clip_box);
}
internal void
begin_frame(Render_Target *target, void *font_set){
target->buffer.pos = 0;
target->font_set = font_set;
}
internal void
begin_render_section(Render_Target *target, System_Functions *system,
i32 frame_index, f32 literal_dt, f32 animation_dt){
target->clip_top = -1;
i32_Rect clip;
clip.x0 = 0;
clip.y0 = 0;
clip.x1 = target->width;
clip.y1 = target->height;
draw_push_clip(target, clip);
target->frame_index = frame_index;
target->literal_dt = literal_dt;
target->animation_dt = animation_dt;
}
internal void
end_render_section(Render_Target *target, System_Functions *system){
Assert(target->clip_top == 0);
}
////////////////////////////////
#define CmdHeader(t) cmd.header.size = sizeof(cmd), cmd.header.type = t
internal void
draw_rectangle(Render_Target *target, f32_Rect rect, u32 color){
Render_Command_Rectangle cmd = {};
CmdHeader(RenCom_Rectangle);
cmd.color = color;
cmd.vertices[0] = V2(rect.x0, rect.y0);
cmd.vertices[1] = V2(rect.x1, rect.y0);
cmd.vertices[2] = V2(rect.x0, rect.y1);
cmd.vertices[3] = V2(rect.x1, rect.y1);
void *h = render_begin_push(target, &cmd, cmd.header.size);
render_end_push(target, h);
}
internal void
draw_rectangle_outline(Render_Target *target, f32_Rect rect, u32 color){
draw_rectangle(target, Rf32(rect.x0, rect.y0, rect.x1, rect.y0 + 1), color);
draw_rectangle(target, Rf32(rect.x1 - 1, rect.y0, rect.x1, rect.y1), color);
draw_rectangle(target, Rf32(rect.x0, rect.y1 - 1, rect.x1, rect.y1), color);
draw_rectangle(target, Rf32(rect.x0, rect.y0, rect.x0 + 1, rect.y1), color);
}
internal void
draw_font_glyph(Render_Target *target, Face_ID font_id, u32 codepoint, f32 x, f32 y, u32 color, u32 flags){
Render_Command_Glyph cmd = {};
CmdHeader(RenCom_Glyph);
cmd.pos.x = x;
cmd.pos.y = y;
cmd.color = color;
cmd.font_id = font_id;
cmd.codepoint = codepoint;
cmd.flags = flags;
void *h = render_begin_push(target, &cmd, cmd.header.size);
render_end_push(target, h);
}
////////////////////////////////
internal void
draw_rectangle(Render_Target *target, i32_Rect rect, u32 color){
draw_rectangle(target, f32R(rect), color);
}
internal void
draw_rectangle_outline(Render_Target *target, i32_Rect rect, u32 color){
draw_rectangle_outline(target, f32R(rect), color);
}
internal void
draw_margin(Render_Target *target, f32_Rect outer, f32_Rect inner, u32 color){
draw_rectangle(target, f32R(outer.x0, outer.y0, outer.x1, inner.y0), color);
draw_rectangle(target, f32R(outer.x0, inner.y1, outer.x1, outer.y1), color);
draw_rectangle(target, f32R(outer.x0, inner.y0, inner.x0, inner.y1), color);
draw_rectangle(target, f32R(inner.x1, inner.y0, outer.x1, inner.y1), color);
}
internal void
draw_margin(Render_Target *target, f32_Rect outer, f32 width, u32 color){
f32_Rect inner = rect_inner(outer, width);
draw_margin(target, outer, inner, color);
}
internal void
draw_margin(Render_Target *target, i32_Rect outer, i32_Rect inner, u32 color){
draw_rectangle(target, i32R(outer.x0, outer.y0, outer.x1, inner.y0), color);
draw_rectangle(target, i32R(outer.x0, inner.y1, outer.x1, outer.y1), color);
draw_rectangle(target, i32R(outer.x0, inner.y0, inner.x0, inner.y1), color);
draw_rectangle(target, i32R(inner.x1, inner.y0, outer.x1, inner.y1), color);
}
internal void
draw_margin(Render_Target *target, i32_Rect outer, i32 width, u32 color){
i32_Rect inner = rect_inner(outer, width);
draw_margin(target, outer, inner, color);
}
internal Vec2
snap_point_to_boundary(Vec2 point){
point.x = (f32)(floor32(point.x));
point.y = (f32)(floor32(point.y));
return(point);
}
internal f32
draw_string(Render_Target *target, Face_ID font_id, String_Const_u8 string, Vec2 point, u32 color, u32 flags, Vec2 delta){
f32 total_delta = 0.f;
Face *face = 0;
if (face != 0){
point = snap_point_to_boundary(point);
f32 byte_advance = face->byte_advance;
f32 *byte_sub_advances = face->byte_sub_advances;
u8 *str = (u8*)string.str;
u8 *str_end = str + string.size;
Translation_State tran = {};
Translation_Emits emits = {};
for (u32 i = 0; str < str_end; ++str, ++i){
translating_fully_process_byte(&tran, *str, i, (i32)string.size, &emits);
for (TRANSLATION_DECL_EMIT_LOOP(J, emits)){
TRANSLATION_DECL_GET_STEP(step, behavior, J, emits);
if (behavior.do_codepoint_advance){
u32 codepoint = step.value;
if (color != 0){
draw_font_glyph(target, font_id, codepoint, point.x, point.y, color, flags);
}
f32 d = font_get_glyph_advance(face, codepoint);
point += d*delta;
total_delta += d;
}
else if (behavior.do_number_advance){
u8 n = (u8)(step.value);
if (color != 0){
u8 cs[3];
cs[0] = '\\';
byte_to_ascii(n, cs+1);
Vec2 pp = point;
for (u32 j = 0; j < 3; ++j){
draw_font_glyph(target, font_id, cs[j], pp.x, pp.y, color, flags);
pp += delta*byte_sub_advances[j];
}
}
point += byte_advance*delta;
total_delta += byte_advance;
}
}
}
}
return(total_delta);
}
internal f32
draw_string(Render_Target *target, Face_ID font_id, String_Const_u8 string, Vec2 point, u32 color){
return(draw_string(target, font_id, string, point, color, 0, V2(1.f, 0.f)));
}
internal f32
draw_string(Render_Target *target, Face_ID font_id, u8 *str, Vec2 point,
u32 color, u32 flags, Vec2 delta){
return(draw_string(target, font_id, SCu8(str), point, color, flags, delta));
}
internal f32
draw_string(Render_Target *target, Face_ID font_id, u8 *str, Vec2 point,
u32 color){
return(draw_string(target, font_id, SCu8(str), point, color, 0, V2(1.f, 0.f)));
}
internal f32
font_string_width(Render_Target *target, Face_ID font_id, String_Const_u8 str){
return(draw_string(target, font_id, str, V2(0, 0), 0, 0, V2(0, 0)));
}
internal f32
font_string_width(Render_Target *target, Face_ID font_id, u8 *str){
return(draw_string(target, font_id, SCu8(str), V2(0, 0), 0, 0, V2(0, 0)));
}
// BOTTOM