136 lines
3.4 KiB
C++
136 lines
3.4 KiB
C++
#include "render.hpp"
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#include "minmax.hpp"
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#include "transform.hpp"
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#include "holly/ta_global_parameter.hpp"
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#include "holly/ta_fifo_polygon_converter.hpp"
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#include "sh7091/serial.hpp"
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static inline uint32_t get_font_ix(const struct font * font,
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char_type c)
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{
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uint32_t ix;
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if (c >= font->first_char_code && c <= font->last_char_code) {
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ix = c - font->first_char_code;
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} else if (c == '\n') {
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ix = '#' - font->first_char_code;
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} else if ('%' <= font->last_char_code) {
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ix = '%' - font->first_char_code;
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} else {
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ix = 0;
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}
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return ix;
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}
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constexpr inline int32_t int_26_6(int32_t n)
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{
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int32_t v = n >> 6;
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//float d = n & 63;
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//return v + (d / 64.f);
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return v;
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}
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cursor_advance render_primary_buffer(ta_parameter_writer& parameter,
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const font * font,
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const glyph * glyphs,
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const gap_buffer& gb,
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const viewport_window& window)
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{
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int32_t first_line = min(-1, max(window.first_line, gb.line.length - 1));
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cursor_advance cursor = { 0 };
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int32_t h_advance = 0;
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int32_t v_advance = 0;
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int32_t init_i = first_line >= 0 ? gb.line.offsets[first_line] + 1 : 0;
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for (int32_t i = init_i; i <= gb.size; i++) {
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if (i == gb.gap_start) {
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uint32_t ix = get_font_ix(font, ' ');
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auto& glyph = glyphs[ix];
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cursor.x = h_advance + glyph.metrics.horiBearingX;
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cursor.y = v_advance - glyph.metrics.horiBearingY;
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cursor.width = glyph.metrics.horiAdvance;
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cursor.height = font->face_metrics.height;
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i = gb.gap_end;
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}
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if (i == gb.size)
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break;
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int32_t x = window.box.x0 + int_26_6(h_advance);
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int32_t y = window.box.y0 + int_26_6(v_advance);
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char_type c = gb.buf[i];
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uint32_t ix = get_font_ix(font, c);
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auto& glyph = glyphs[ix];
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if (x + int_26_6(glyph.metrics.horiAdvance) <= window.box.x1) {
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transform_glyph(parameter,
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font->texture_width,
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font->texture_height,
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glyph,
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x,
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y
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);
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}
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if (c == '\n') {
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h_advance = 0;
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v_advance += font->face_metrics.height;
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if (int_26_6(v_advance + font->face_metrics.height) > window.box.y1) {
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break;
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}
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} else {
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h_advance += glyph.metrics.horiAdvance;
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}
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}
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return cursor;
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}
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void render_cursor(ta_parameter_writer& parameter,
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const cursor_advance& cursor,
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const viewport_window& window)
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{
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float x = window.box.x0 + int_26_6(cursor.x);
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float y = window.box.y0 + int_26_6(cursor.y);
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float width = int_26_6(cursor.width);
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float height = int_26_6(cursor.height);
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transform_sprite(parameter,
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x, // x
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y, // y
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width,
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height
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);
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}
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void render(ta_parameter_writer& parameter,
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const font * font,
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const glyph * glyphs,
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const gap_buffer& gb,
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const viewport_window& window)
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{
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cursor_advance cursor = render_primary_buffer(parameter, font, glyphs, gb, window);
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parameter.append<ta_global_parameter::end_of_list>() = ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
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ta_polygon_converter_transfer(parameter.buf, parameter.offset);
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ta_wait_opaque_list();
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parameter.offset = 0;
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/*
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render_cursor(parameter, cursor, window);
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parameter.append<ta_global_parameter::end_of_list>() = ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
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ta_polygon_converter_transfer(parameter.buf, parameter.offset);
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serial::string("wait tl\n");
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ta_wait_translucent_list();
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serial::string("done tl\n");
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*/
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}
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