898 lines
24 KiB
C++
898 lines
24 KiB
C++
/*
|
|
* Copyright 2013 Jeremie Roy. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
|
|
*/
|
|
|
|
#include "../common.h"
|
|
|
|
#include <bgfx/bgfx.h>
|
|
#include <bgfx/embedded_shader.h>
|
|
|
|
#include <stddef.h> // offsetof
|
|
#include <wchar.h> // wcslen
|
|
|
|
#include "text_buffer_manager.h"
|
|
#include "utf8.h"
|
|
#include "../cube_atlas.h"
|
|
|
|
#include "vs_font_basic.bin.h"
|
|
#include "fs_font_basic.bin.h"
|
|
#include "vs_font_distance_field.bin.h"
|
|
#include "fs_font_distance_field.bin.h"
|
|
#include "vs_font_distance_field_subpixel.bin.h"
|
|
#include "fs_font_distance_field_subpixel.bin.h"
|
|
|
|
static const bgfx::EmbeddedShader s_embeddedShaders[] =
|
|
{
|
|
BGFX_EMBEDDED_SHADER(vs_font_basic),
|
|
BGFX_EMBEDDED_SHADER(fs_font_basic),
|
|
BGFX_EMBEDDED_SHADER(vs_font_distance_field),
|
|
BGFX_EMBEDDED_SHADER(fs_font_distance_field),
|
|
BGFX_EMBEDDED_SHADER(vs_font_distance_field_subpixel),
|
|
BGFX_EMBEDDED_SHADER(fs_font_distance_field_subpixel),
|
|
|
|
BGFX_EMBEDDED_SHADER_END()
|
|
};
|
|
|
|
#define MAX_BUFFERED_CHARACTERS (8192 - 5)
|
|
|
|
class TextBuffer
|
|
{
|
|
public:
|
|
|
|
/// TextBuffer is bound to a fontManager for glyph retrieval
|
|
/// @remark the ownership of the manager is not taken
|
|
TextBuffer(FontManager* _fontManager);
|
|
~TextBuffer();
|
|
|
|
void setStyle(uint32_t _flags = STYLE_NORMAL)
|
|
{
|
|
m_styleFlags = _flags;
|
|
}
|
|
|
|
void setTextColor(uint32_t _rgba = 0x000000FF)
|
|
{
|
|
m_textColor = toABGR(_rgba);
|
|
}
|
|
|
|
void setBackgroundColor(uint32_t _rgba = 0x000000FF)
|
|
{
|
|
m_backgroundColor = toABGR(_rgba);
|
|
}
|
|
|
|
void setOverlineColor(uint32_t _rgba = 0x000000FF)
|
|
{
|
|
m_overlineColor = toABGR(_rgba);
|
|
}
|
|
|
|
void setUnderlineColor(uint32_t _rgba = 0x000000FF)
|
|
{
|
|
m_underlineColor = toABGR(_rgba);
|
|
}
|
|
|
|
void setStrikeThroughColor(uint32_t _rgba = 0x000000FF)
|
|
{
|
|
m_strikeThroughColor = toABGR(_rgba);
|
|
}
|
|
|
|
void setPenPosition(float _x, float _y)
|
|
{
|
|
m_penX = _x; m_penY = _y;
|
|
}
|
|
|
|
/// Append an ASCII/utf-8 string to the buffer using current pen
|
|
/// position and color.
|
|
void appendText(FontHandle _fontHandle, const char* _string, const char* _end = NULL);
|
|
|
|
/// Append a wide char unicode string to the buffer using current pen
|
|
/// position and color.
|
|
void appendText(FontHandle _fontHandle, const wchar_t* _string, const wchar_t* _end = NULL);
|
|
|
|
/// Append a whole face of the atlas cube, mostly used for debugging
|
|
/// and visualizing atlas.
|
|
void appendAtlasFace(uint16_t _faceIndex);
|
|
|
|
/// Clear the text buffer and reset its state (pen/color)
|
|
void clearTextBuffer();
|
|
|
|
/// Get pointer to the vertex buffer to submit it to the graphic card.
|
|
const uint8_t* getVertexBuffer()
|
|
{
|
|
return (uint8_t*) m_vertexBuffer;
|
|
}
|
|
|
|
/// Number of vertex in the vertex buffer.
|
|
uint32_t getVertexCount() const
|
|
{
|
|
return m_vertexCount;
|
|
}
|
|
|
|
/// Size in bytes of a vertex.
|
|
uint32_t getVertexSize() const
|
|
{
|
|
return sizeof(TextVertex);
|
|
}
|
|
|
|
/// get a pointer to the index buffer to submit it to the graphic
|
|
const uint16_t* getIndexBuffer() const
|
|
{
|
|
return m_indexBuffer;
|
|
}
|
|
|
|
/// number of index in the index buffer
|
|
uint32_t getIndexCount() const
|
|
{
|
|
return m_indexCount;
|
|
}
|
|
|
|
/// Size in bytes of an index.
|
|
uint32_t getIndexSize() const
|
|
{
|
|
return sizeof(uint16_t);
|
|
}
|
|
|
|
uint32_t getTextColor() const
|
|
{
|
|
return toABGR(m_textColor);
|
|
}
|
|
|
|
TextRectangle getRectangle() const
|
|
{
|
|
return m_rectangle;
|
|
}
|
|
|
|
private:
|
|
void appendGlyph(FontHandle _handle, CodePoint _codePoint);
|
|
void verticalCenterLastLine(float _txtDecalY, float _top, float _bottom);
|
|
|
|
static uint32_t toABGR(uint32_t _rgba)
|
|
{
|
|
return ( ( (_rgba >> 0) & 0xff) << 24)
|
|
| ( ( (_rgba >> 8) & 0xff) << 16)
|
|
| ( ( (_rgba >> 16) & 0xff) << 8)
|
|
| ( ( (_rgba >> 24) & 0xff) << 0)
|
|
;
|
|
}
|
|
|
|
uint32_t m_styleFlags;
|
|
|
|
// color states
|
|
uint32_t m_textColor;
|
|
|
|
uint32_t m_backgroundColor;
|
|
uint32_t m_overlineColor;
|
|
uint32_t m_underlineColor;
|
|
uint32_t m_strikeThroughColor;
|
|
|
|
//position states
|
|
float m_penX;
|
|
float m_penY;
|
|
|
|
float m_originX;
|
|
float m_originY;
|
|
|
|
float m_lineAscender;
|
|
float m_lineDescender;
|
|
float m_lineGap;
|
|
|
|
TextRectangle m_rectangle;
|
|
FontManager* m_fontManager;
|
|
|
|
void setVertex(uint32_t _i, float _x, float _y, uint32_t _rgba, uint8_t _style = STYLE_NORMAL)
|
|
{
|
|
m_vertexBuffer[_i].x = _x;
|
|
m_vertexBuffer[_i].y = _y;
|
|
m_vertexBuffer[_i].rgba = _rgba;
|
|
m_styleBuffer[_i] = _style;
|
|
}
|
|
|
|
struct TextVertex
|
|
{
|
|
float x, y;
|
|
int16_t u, v, w, t;
|
|
uint32_t rgba;
|
|
};
|
|
|
|
TextVertex* m_vertexBuffer;
|
|
uint16_t* m_indexBuffer;
|
|
uint8_t* m_styleBuffer;
|
|
|
|
uint32_t m_indexCount;
|
|
uint32_t m_lineStartIndex;
|
|
uint16_t m_vertexCount;
|
|
};
|
|
|
|
TextBuffer::TextBuffer(FontManager* _fontManager)
|
|
: m_styleFlags(STYLE_NORMAL)
|
|
, m_textColor(0xffffffff)
|
|
, m_backgroundColor(0xffffffff)
|
|
, m_overlineColor(0xffffffff)
|
|
, m_underlineColor(0xffffffff)
|
|
, m_strikeThroughColor(0xffffffff)
|
|
, m_penX(0)
|
|
, m_penY(0)
|
|
, m_originX(0)
|
|
, m_originY(0)
|
|
, m_lineAscender(0)
|
|
, m_lineDescender(0)
|
|
, m_lineGap(0)
|
|
, m_fontManager(_fontManager)
|
|
, m_vertexBuffer(new TextVertex[MAX_BUFFERED_CHARACTERS * 4])
|
|
, m_indexBuffer(new uint16_t[MAX_BUFFERED_CHARACTERS * 6])
|
|
, m_styleBuffer(new uint8_t[MAX_BUFFERED_CHARACTERS * 4])
|
|
, m_indexCount(0)
|
|
, m_lineStartIndex(0)
|
|
, m_vertexCount(0)
|
|
{
|
|
m_rectangle.width = 0;
|
|
m_rectangle.height = 0;
|
|
}
|
|
|
|
TextBuffer::~TextBuffer()
|
|
{
|
|
delete [] m_vertexBuffer;
|
|
delete [] m_indexBuffer;
|
|
delete [] m_styleBuffer;
|
|
}
|
|
|
|
void TextBuffer::appendText(FontHandle _fontHandle, const char* _string, const char* _end)
|
|
{
|
|
if (m_vertexCount == 0)
|
|
{
|
|
m_originX = m_penX;
|
|
m_originY = m_penY;
|
|
m_lineDescender = 0;
|
|
m_lineAscender = 0;
|
|
m_lineGap = 0;
|
|
}
|
|
|
|
CodePoint codepoint = 0;
|
|
uint32_t state = 0;
|
|
|
|
if (_end == NULL)
|
|
{
|
|
_end = _string + bx::strnlen(_string);
|
|
}
|
|
BX_CHECK(_end >= _string);
|
|
|
|
for (; *_string && _string < _end ; ++_string)
|
|
{
|
|
if (utf8_decode(&state, (uint32_t*)&codepoint, *_string) == UTF8_ACCEPT )
|
|
{
|
|
appendGlyph(_fontHandle, codepoint);
|
|
}
|
|
}
|
|
|
|
BX_CHECK(state == UTF8_ACCEPT, "The string is not well-formed");
|
|
}
|
|
|
|
void TextBuffer::appendText(FontHandle _fontHandle, const wchar_t* _string, const wchar_t* _end)
|
|
{
|
|
if (m_vertexCount == 0)
|
|
{
|
|
m_originX = m_penX;
|
|
m_originY = m_penY;
|
|
m_lineDescender = 0;
|
|
m_lineAscender = 0;
|
|
m_lineGap = 0;
|
|
}
|
|
|
|
if (_end == NULL)
|
|
{
|
|
_end = _string + wcslen(_string);
|
|
}
|
|
BX_CHECK(_end >= _string);
|
|
|
|
for (const wchar_t* _current = _string; _current < _end; ++_current)
|
|
{
|
|
uint32_t _codePoint = *_current;
|
|
appendGlyph(_fontHandle, _codePoint);
|
|
}
|
|
}
|
|
|
|
void TextBuffer::appendAtlasFace(uint16_t _faceIndex)
|
|
{
|
|
if( m_vertexCount/4 >= MAX_BUFFERED_CHARACTERS)
|
|
{
|
|
return;
|
|
}
|
|
|
|
float x0 = m_penX;
|
|
float y0 = m_penY;
|
|
float x1 = x0 + (float)m_fontManager->getAtlas()->getTextureSize();
|
|
float y1 = y0 + (float)m_fontManager->getAtlas()->getTextureSize();
|
|
|
|
m_fontManager->getAtlas()->packFaceLayerUV(_faceIndex
|
|
, (uint8_t*)m_vertexBuffer
|
|
, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u)
|
|
, sizeof(TextVertex)
|
|
);
|
|
|
|
setVertex(m_vertexCount + 0, x0, y0, m_backgroundColor);
|
|
setVertex(m_vertexCount + 1, x0, y1, m_backgroundColor);
|
|
setVertex(m_vertexCount + 2, x1, y1, m_backgroundColor);
|
|
setVertex(m_vertexCount + 3, x1, y0, m_backgroundColor);
|
|
|
|
m_indexBuffer[m_indexCount + 0] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 1] = m_vertexCount + 1;
|
|
m_indexBuffer[m_indexCount + 2] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 3] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 4] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 5] = m_vertexCount + 3;
|
|
m_vertexCount += 4;
|
|
m_indexCount += 6;
|
|
}
|
|
|
|
void TextBuffer::clearTextBuffer()
|
|
{
|
|
m_penX = 0;
|
|
m_penY = 0;
|
|
m_originX = 0;
|
|
m_originY = 0;
|
|
|
|
m_vertexCount = 0;
|
|
m_indexCount = 0;
|
|
m_lineStartIndex = 0;
|
|
m_lineAscender = 0;
|
|
m_lineDescender = 0;
|
|
m_lineGap = 0;
|
|
m_rectangle.width = 0;
|
|
m_rectangle.height = 0;
|
|
}
|
|
|
|
void TextBuffer::appendGlyph(FontHandle _handle, CodePoint _codePoint)
|
|
{
|
|
if (_codePoint == L'\t')
|
|
{
|
|
for (uint32_t ii = 0; ii < 4; ++ii)
|
|
{
|
|
appendGlyph(_handle, L' ');
|
|
}
|
|
return;
|
|
}
|
|
|
|
const GlyphInfo* glyph = m_fontManager->getGlyphInfo(_handle, _codePoint);
|
|
BX_WARN(NULL != glyph, "Glyph not found (font handle %d, code point %d)", _handle.idx, _codePoint);
|
|
if (NULL == glyph)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if( m_vertexCount/4 >= MAX_BUFFERED_CHARACTERS)
|
|
{
|
|
return;
|
|
}
|
|
|
|
const FontInfo& font = m_fontManager->getFontInfo(_handle);
|
|
|
|
if (_codePoint == L'\n')
|
|
{
|
|
m_penX = m_originX;
|
|
m_penY += m_lineGap + m_lineAscender -m_lineDescender;
|
|
m_lineGap = font.lineGap;
|
|
m_lineDescender = font.descender;
|
|
m_lineAscender = font.ascender;
|
|
m_lineStartIndex = m_vertexCount;
|
|
return;
|
|
}
|
|
|
|
//is there a change of font size that require the text on the left to be centered again ?
|
|
if (font.ascender > m_lineAscender
|
|
|| (font.descender < m_lineDescender) )
|
|
{
|
|
if (font.descender < m_lineDescender)
|
|
{
|
|
m_lineDescender = font.descender;
|
|
m_lineGap = font.lineGap;
|
|
}
|
|
|
|
float txtDecals = (font.ascender - m_lineAscender);
|
|
m_lineAscender = font.ascender;
|
|
m_lineGap = font.lineGap;
|
|
verticalCenterLastLine( (txtDecals), (m_penY - m_lineAscender), (m_penY + m_lineAscender - m_lineDescender + m_lineGap) );
|
|
}
|
|
|
|
float kerning = 0 * font.scale;
|
|
m_penX += kerning;
|
|
|
|
const GlyphInfo& blackGlyph = m_fontManager->getBlackGlyph();
|
|
const Atlas* atlas = m_fontManager->getAtlas();
|
|
|
|
if (m_styleFlags & STYLE_BACKGROUND
|
|
&& m_backgroundColor & 0xff000000)
|
|
{
|
|
float x0 = (m_penX - kerning);
|
|
float y0 = (m_penY);
|
|
float x1 = ( (float)x0 + (glyph->advance_x) );
|
|
float y1 = (m_penY + m_lineAscender - m_lineDescender + m_lineGap);
|
|
|
|
atlas->packUV(blackGlyph.regionIndex
|
|
, (uint8_t*)m_vertexBuffer
|
|
, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u)
|
|
, sizeof(TextVertex)
|
|
);
|
|
|
|
const uint16_t vertexCount = m_vertexCount;
|
|
setVertex(vertexCount + 0, x0, y0, m_backgroundColor, STYLE_BACKGROUND);
|
|
setVertex(vertexCount + 1, x0, y1, m_backgroundColor, STYLE_BACKGROUND);
|
|
setVertex(vertexCount + 2, x1, y1, m_backgroundColor, STYLE_BACKGROUND);
|
|
setVertex(vertexCount + 3, x1, y0, m_backgroundColor, STYLE_BACKGROUND);
|
|
|
|
m_indexBuffer[m_indexCount + 0] = vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 1] = vertexCount + 1;
|
|
m_indexBuffer[m_indexCount + 2] = vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 3] = vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 4] = vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 5] = vertexCount + 3;
|
|
m_vertexCount += 4;
|
|
m_indexCount += 6;
|
|
}
|
|
|
|
if (m_styleFlags & STYLE_UNDERLINE
|
|
&& m_underlineColor & 0xFF000000)
|
|
{
|
|
float x0 = (m_penX - kerning);
|
|
float y0 = (m_penY + m_lineAscender - m_lineDescender * 0.5f);
|
|
float x1 = ( (float)x0 + (glyph->advance_x) );
|
|
float y1 = y0 + font.underlineThickness;
|
|
|
|
atlas->packUV(blackGlyph.regionIndex
|
|
, (uint8_t*)m_vertexBuffer
|
|
, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u)
|
|
, sizeof(TextVertex)
|
|
);
|
|
|
|
setVertex(m_vertexCount + 0, x0, y0, m_underlineColor, STYLE_UNDERLINE);
|
|
setVertex(m_vertexCount + 1, x0, y1, m_underlineColor, STYLE_UNDERLINE);
|
|
setVertex(m_vertexCount + 2, x1, y1, m_underlineColor, STYLE_UNDERLINE);
|
|
setVertex(m_vertexCount + 3, x1, y0, m_underlineColor, STYLE_UNDERLINE);
|
|
|
|
m_indexBuffer[m_indexCount + 0] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 1] = m_vertexCount + 1;
|
|
m_indexBuffer[m_indexCount + 2] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 3] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 4] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 5] = m_vertexCount + 3;
|
|
m_vertexCount += 4;
|
|
m_indexCount += 6;
|
|
}
|
|
|
|
if (m_styleFlags & STYLE_OVERLINE
|
|
&& m_overlineColor & 0xFF000000)
|
|
{
|
|
float x0 = (m_penX - kerning);
|
|
float y0 = (m_penY);
|
|
float x1 = ( (float)x0 + (glyph->advance_x) );
|
|
float y1 = y0 + font.underlineThickness;
|
|
|
|
m_fontManager->getAtlas()->packUV(blackGlyph.regionIndex
|
|
, (uint8_t*)m_vertexBuffer
|
|
, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u)
|
|
, sizeof(TextVertex)
|
|
);
|
|
|
|
setVertex(m_vertexCount + 0, x0, y0, m_overlineColor, STYLE_OVERLINE);
|
|
setVertex(m_vertexCount + 1, x0, y1, m_overlineColor, STYLE_OVERLINE);
|
|
setVertex(m_vertexCount + 2, x1, y1, m_overlineColor, STYLE_OVERLINE);
|
|
setVertex(m_vertexCount + 3, x1, y0, m_overlineColor, STYLE_OVERLINE);
|
|
|
|
m_indexBuffer[m_indexCount + 0] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 1] = m_vertexCount + 1;
|
|
m_indexBuffer[m_indexCount + 2] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 3] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 4] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 5] = m_vertexCount + 3;
|
|
m_vertexCount += 4;
|
|
m_indexCount += 6;
|
|
}
|
|
|
|
if (m_styleFlags & STYLE_STRIKE_THROUGH
|
|
&& m_strikeThroughColor & 0xFF000000)
|
|
{
|
|
float x0 = (m_penX - kerning);
|
|
float y0 = (m_penY + 0.666667f * font.ascender);
|
|
float x1 = ( (float)x0 + (glyph->advance_x) );
|
|
float y1 = y0 + font.underlineThickness;
|
|
|
|
atlas->packUV(blackGlyph.regionIndex
|
|
, (uint8_t*)m_vertexBuffer
|
|
, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u)
|
|
, sizeof(TextVertex)
|
|
);
|
|
|
|
setVertex(m_vertexCount + 0, x0, y0, m_strikeThroughColor, STYLE_STRIKE_THROUGH);
|
|
setVertex(m_vertexCount + 1, x0, y1, m_strikeThroughColor, STYLE_STRIKE_THROUGH);
|
|
setVertex(m_vertexCount + 2, x1, y1, m_strikeThroughColor, STYLE_STRIKE_THROUGH);
|
|
setVertex(m_vertexCount + 3, x1, y0, m_strikeThroughColor, STYLE_STRIKE_THROUGH);
|
|
|
|
m_indexBuffer[m_indexCount + 0] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 1] = m_vertexCount + 1;
|
|
m_indexBuffer[m_indexCount + 2] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 3] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 4] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 5] = m_vertexCount + 3;
|
|
m_vertexCount += 4;
|
|
m_indexCount += 6;
|
|
}
|
|
|
|
float x0 = m_penX + (glyph->offset_x);
|
|
float y0 = (m_penY + m_lineAscender + (glyph->offset_y) );
|
|
float x1 = (x0 + glyph->width);
|
|
float y1 = (y0 + glyph->height);
|
|
|
|
atlas->packUV(glyph->regionIndex
|
|
, (uint8_t*)m_vertexBuffer
|
|
, sizeof(TextVertex) * m_vertexCount + offsetof(TextVertex, u)
|
|
, sizeof(TextVertex)
|
|
);
|
|
|
|
setVertex(m_vertexCount + 0, x0, y0, m_textColor);
|
|
setVertex(m_vertexCount + 1, x0, y1, m_textColor);
|
|
setVertex(m_vertexCount + 2, x1, y1, m_textColor);
|
|
setVertex(m_vertexCount + 3, x1, y0, m_textColor);
|
|
|
|
m_indexBuffer[m_indexCount + 0] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 1] = m_vertexCount + 1;
|
|
m_indexBuffer[m_indexCount + 2] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 3] = m_vertexCount + 0;
|
|
m_indexBuffer[m_indexCount + 4] = m_vertexCount + 2;
|
|
m_indexBuffer[m_indexCount + 5] = m_vertexCount + 3;
|
|
m_vertexCount += 4;
|
|
m_indexCount += 6;
|
|
|
|
m_penX += glyph->advance_x;
|
|
if (m_penX > m_rectangle.width)
|
|
{
|
|
m_rectangle.width = m_penX;
|
|
}
|
|
|
|
if ( (m_penY +m_lineAscender - m_lineDescender+m_lineGap) > m_rectangle.height)
|
|
{
|
|
m_rectangle.height = (m_penY +m_lineAscender - m_lineDescender+m_lineGap);
|
|
}
|
|
}
|
|
|
|
void TextBuffer::verticalCenterLastLine(float _dy, float _top, float _bottom)
|
|
{
|
|
for (uint32_t ii = m_lineStartIndex; ii < m_vertexCount; ii += 4)
|
|
{
|
|
if (m_styleBuffer[ii] == STYLE_BACKGROUND)
|
|
{
|
|
m_vertexBuffer[ii + 0].y = _top;
|
|
m_vertexBuffer[ii + 1].y = _bottom;
|
|
m_vertexBuffer[ii + 2].y = _bottom;
|
|
m_vertexBuffer[ii + 3].y = _top;
|
|
}
|
|
else
|
|
{
|
|
m_vertexBuffer[ii + 0].y += _dy;
|
|
m_vertexBuffer[ii + 1].y += _dy;
|
|
m_vertexBuffer[ii + 2].y += _dy;
|
|
m_vertexBuffer[ii + 3].y += _dy;
|
|
}
|
|
}
|
|
}
|
|
|
|
TextBufferManager::TextBufferManager(FontManager* _fontManager)
|
|
: m_fontManager(_fontManager)
|
|
{
|
|
m_textBuffers = new BufferCache[MAX_TEXT_BUFFER_COUNT];
|
|
|
|
bgfx::RendererType::Enum type = bgfx::getRendererType();
|
|
|
|
m_basicProgram = bgfx::createProgram(
|
|
bgfx::createEmbeddedShader(s_embeddedShaders, type, "vs_font_basic")
|
|
, bgfx::createEmbeddedShader(s_embeddedShaders, type, "fs_font_basic")
|
|
, true
|
|
);
|
|
|
|
m_distanceProgram = bgfx::createProgram(
|
|
bgfx::createEmbeddedShader(s_embeddedShaders, type, "vs_font_distance_field")
|
|
, bgfx::createEmbeddedShader(s_embeddedShaders, type, "fs_font_distance_field")
|
|
, true
|
|
);
|
|
|
|
m_distanceSubpixelProgram = bgfx::createProgram(
|
|
bgfx::createEmbeddedShader(s_embeddedShaders, type, "vs_font_distance_field_subpixel")
|
|
, bgfx::createEmbeddedShader(s_embeddedShaders, type, "fs_font_distance_field_subpixel")
|
|
, true
|
|
);
|
|
|
|
m_vertexDecl
|
|
.begin()
|
|
.add(bgfx::Attrib::Position, 2, bgfx::AttribType::Float)
|
|
.add(bgfx::Attrib::TexCoord0, 4, bgfx::AttribType::Int16, true)
|
|
.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true)
|
|
.end();
|
|
|
|
s_texColor = bgfx::createUniform("s_texColor", bgfx::UniformType::Int1);
|
|
}
|
|
|
|
TextBufferManager::~TextBufferManager()
|
|
{
|
|
BX_CHECK(m_textBufferHandles.getNumHandles() == 0, "All the text buffers must be destroyed before destroying the manager");
|
|
delete [] m_textBuffers;
|
|
|
|
bgfx::destroyUniform(s_texColor);
|
|
|
|
bgfx::destroyProgram(m_basicProgram);
|
|
bgfx::destroyProgram(m_distanceProgram);
|
|
bgfx::destroyProgram(m_distanceSubpixelProgram);
|
|
}
|
|
|
|
TextBufferHandle TextBufferManager::createTextBuffer(uint32_t _type, BufferType::Enum _bufferType)
|
|
{
|
|
uint16_t textIdx = m_textBufferHandles.alloc();
|
|
BufferCache& bc = m_textBuffers[textIdx];
|
|
|
|
bc.textBuffer = new TextBuffer(m_fontManager);
|
|
bc.fontType = _type;
|
|
bc.bufferType = _bufferType;
|
|
bc.indexBufferHandleIdx = bgfx::invalidHandle;
|
|
bc.vertexBufferHandleIdx = bgfx::invalidHandle;
|
|
|
|
TextBufferHandle ret = {textIdx};
|
|
return ret;
|
|
}
|
|
|
|
void TextBufferManager::destroyTextBuffer(TextBufferHandle _handle)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
m_textBufferHandles.free(_handle.idx);
|
|
delete bc.textBuffer;
|
|
bc.textBuffer = NULL;
|
|
|
|
if (bc.vertexBufferHandleIdx == bgfx::invalidHandle)
|
|
{
|
|
return;
|
|
}
|
|
|
|
switch (bc.bufferType)
|
|
{
|
|
case BufferType::Static:
|
|
{
|
|
bgfx::IndexBufferHandle ibh;
|
|
bgfx::VertexBufferHandle vbh;
|
|
ibh.idx = bc.indexBufferHandleIdx;
|
|
vbh.idx = bc.vertexBufferHandleIdx;
|
|
bgfx::destroyIndexBuffer(ibh);
|
|
bgfx::destroyVertexBuffer(vbh);
|
|
}
|
|
|
|
break;
|
|
|
|
case BufferType::Dynamic:
|
|
bgfx::DynamicIndexBufferHandle ibh;
|
|
bgfx::DynamicVertexBufferHandle vbh;
|
|
ibh.idx = bc.indexBufferHandleIdx;
|
|
vbh.idx = bc.vertexBufferHandleIdx;
|
|
bgfx::destroyDynamicIndexBuffer(ibh);
|
|
bgfx::destroyDynamicVertexBuffer(vbh);
|
|
|
|
break;
|
|
|
|
case BufferType::Transient: // destroyed every frame
|
|
break;
|
|
}
|
|
}
|
|
|
|
void TextBufferManager::submitTextBuffer(TextBufferHandle _handle, uint8_t _id, int32_t _depth)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
|
|
uint32_t indexSize = bc.textBuffer->getIndexCount() * bc.textBuffer->getIndexSize();
|
|
uint32_t vertexSize = bc.textBuffer->getVertexCount() * bc.textBuffer->getVertexSize();
|
|
|
|
if (0 == indexSize || 0 == vertexSize)
|
|
{
|
|
return;
|
|
}
|
|
|
|
bgfx::setTexture(0, s_texColor, m_fontManager->getAtlas()->getTextureHandle() );
|
|
|
|
bgfx::ProgramHandle program = BGFX_INVALID_HANDLE;
|
|
switch (bc.fontType)
|
|
{
|
|
case FONT_TYPE_ALPHA:
|
|
program = m_basicProgram;
|
|
bgfx::setState(0
|
|
| BGFX_STATE_RGB_WRITE
|
|
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
|
|
);
|
|
break;
|
|
|
|
case FONT_TYPE_DISTANCE:
|
|
program = m_distanceProgram;
|
|
bgfx::setState(0
|
|
| BGFX_STATE_RGB_WRITE
|
|
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
|
|
);
|
|
break;
|
|
|
|
case FONT_TYPE_DISTANCE_SUBPIXEL:
|
|
program = m_distanceSubpixelProgram;
|
|
bgfx::setState(0
|
|
| BGFX_STATE_RGB_WRITE
|
|
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_FACTOR, BGFX_STATE_BLEND_INV_SRC_COLOR)
|
|
, bc.textBuffer->getTextColor()
|
|
);
|
|
break;
|
|
}
|
|
|
|
switch (bc.bufferType)
|
|
{
|
|
case BufferType::Static:
|
|
{
|
|
bgfx::IndexBufferHandle ibh;
|
|
bgfx::VertexBufferHandle vbh;
|
|
|
|
if (bgfx::invalidHandle == bc.vertexBufferHandleIdx)
|
|
{
|
|
ibh = bgfx::createIndexBuffer(
|
|
bgfx::copy(bc.textBuffer->getIndexBuffer(), indexSize)
|
|
);
|
|
|
|
vbh = bgfx::createVertexBuffer(
|
|
bgfx::copy(bc.textBuffer->getVertexBuffer(), vertexSize)
|
|
, m_vertexDecl
|
|
);
|
|
|
|
bc.vertexBufferHandleIdx = vbh.idx;
|
|
bc.indexBufferHandleIdx = ibh.idx;
|
|
}
|
|
else
|
|
{
|
|
vbh.idx = bc.vertexBufferHandleIdx;
|
|
ibh.idx = bc.indexBufferHandleIdx;
|
|
}
|
|
|
|
bgfx::setVertexBuffer(vbh, 0, bc.textBuffer->getVertexCount() );
|
|
bgfx::setIndexBuffer(ibh, 0, bc.textBuffer->getIndexCount() );
|
|
}
|
|
break;
|
|
|
|
case BufferType::Dynamic:
|
|
{
|
|
bgfx::DynamicIndexBufferHandle ibh;
|
|
bgfx::DynamicVertexBufferHandle vbh;
|
|
|
|
if (bgfx::invalidHandle == bc.vertexBufferHandleIdx )
|
|
{
|
|
ibh = bgfx::createDynamicIndexBuffer(
|
|
bgfx::copy(bc.textBuffer->getIndexBuffer(), indexSize)
|
|
);
|
|
|
|
vbh = bgfx::createDynamicVertexBuffer(
|
|
bgfx::copy(bc.textBuffer->getVertexBuffer(), vertexSize)
|
|
, m_vertexDecl
|
|
);
|
|
|
|
bc.indexBufferHandleIdx = ibh.idx;
|
|
bc.vertexBufferHandleIdx = vbh.idx;
|
|
}
|
|
else
|
|
{
|
|
ibh.idx = bc.indexBufferHandleIdx;
|
|
vbh.idx = bc.vertexBufferHandleIdx;
|
|
|
|
bgfx::updateDynamicIndexBuffer(ibh
|
|
, 0
|
|
, bgfx::copy(bc.textBuffer->getIndexBuffer(), indexSize)
|
|
);
|
|
|
|
bgfx::updateDynamicVertexBuffer(vbh
|
|
, 0
|
|
, bgfx::copy(bc.textBuffer->getVertexBuffer(), vertexSize)
|
|
);
|
|
}
|
|
|
|
bgfx::setVertexBuffer(vbh, 0, bc.textBuffer->getVertexCount() );
|
|
bgfx::setIndexBuffer(ibh, 0, bc.textBuffer->getIndexCount() );
|
|
}
|
|
break;
|
|
|
|
case BufferType::Transient:
|
|
{
|
|
bgfx::TransientIndexBuffer tib;
|
|
bgfx::TransientVertexBuffer tvb;
|
|
bgfx::allocTransientIndexBuffer(&tib, bc.textBuffer->getIndexCount() );
|
|
bgfx::allocTransientVertexBuffer(&tvb, bc.textBuffer->getVertexCount(), m_vertexDecl);
|
|
bx::memCopy(tib.data, bc.textBuffer->getIndexBuffer(), indexSize);
|
|
bx::memCopy(tvb.data, bc.textBuffer->getVertexBuffer(), vertexSize);
|
|
bgfx::setVertexBuffer(&tvb, 0, bc.textBuffer->getVertexCount() );
|
|
bgfx::setIndexBuffer(&tib, 0, bc.textBuffer->getIndexCount() );
|
|
}
|
|
break;
|
|
}
|
|
|
|
bgfx::submit(_id, program, _depth);
|
|
}
|
|
|
|
void TextBufferManager::setStyle(TextBufferHandle _handle, uint32_t _flags)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setStyle(_flags);
|
|
}
|
|
|
|
void TextBufferManager::setTextColor(TextBufferHandle _handle, uint32_t _rgba)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setTextColor(_rgba);
|
|
}
|
|
|
|
void TextBufferManager::setBackgroundColor(TextBufferHandle _handle, uint32_t _rgba)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setBackgroundColor(_rgba);
|
|
}
|
|
|
|
void TextBufferManager::setOverlineColor(TextBufferHandle _handle, uint32_t _rgba)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setOverlineColor(_rgba);
|
|
}
|
|
|
|
void TextBufferManager::setUnderlineColor(TextBufferHandle _handle, uint32_t _rgba)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setUnderlineColor(_rgba);
|
|
}
|
|
|
|
void TextBufferManager::setStrikeThroughColor(TextBufferHandle _handle, uint32_t _rgba)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setStrikeThroughColor(_rgba);
|
|
}
|
|
|
|
void TextBufferManager::setPenPosition(TextBufferHandle _handle, float _x, float _y)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->setPenPosition(_x, _y);
|
|
}
|
|
|
|
void TextBufferManager::appendText(TextBufferHandle _handle, FontHandle _fontHandle, const char* _string, const char* _end)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->appendText(_fontHandle, _string, _end);
|
|
}
|
|
|
|
void TextBufferManager::appendText(TextBufferHandle _handle, FontHandle _fontHandle, const wchar_t* _string, const wchar_t* _end)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->appendText(_fontHandle, _string, _end);
|
|
}
|
|
|
|
void TextBufferManager::appendAtlasFace(TextBufferHandle _handle, uint16_t _faceIndex)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->appendAtlasFace(_faceIndex);
|
|
}
|
|
|
|
void TextBufferManager::clearTextBuffer(TextBufferHandle _handle)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
bc.textBuffer->clearTextBuffer();
|
|
}
|
|
|
|
TextRectangle TextBufferManager::getRectangle(TextBufferHandle _handle) const
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
BufferCache& bc = m_textBuffers[_handle.idx];
|
|
return bc.textBuffer->getRectangle();
|
|
}
|