283 lines
8.5 KiB
C++
283 lines
8.5 KiB
C++
|
// Redistribution and use in source and binary forms, with or without
|
||
|
|
// modification, are permitted provided that the following conditions
|
||
|
|
// are met:
|
||
|
|
// * Redistributions of source code must retain the above copyright
|
||
|
|
// notice, this list of conditions and the following disclaimer.
|
||
|
|
// * Redistributions in binary form must reproduce the above copyright
|
||
|
|
// notice, this list of conditions and the following disclaimer in the
|
||
|
|
// documentation and/or other materials provided with the distribution.
|
||
|
|
// * Neither the name of NVIDIA CORPORATION nor the names of its
|
||
|
|
// contributors may be used to endorse or promote products derived
|
||
|
|
// from this software without specific prior written permission.
|
||
|
|
//
|
||
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
|
||
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
||
|
|
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||
|
|
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||
|
|
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
||
|
|
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
//
|
||
|
|
// Copyright (c) 2008-2025 NVIDIA Corporation. All rights reserved.
|
||
|
|
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
|
||
|
|
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
|
||
|
|
|
||
|
|
#include "SnippetFontData.h"
|
||
|
|
#include "SnippetFontRenderer.h"
|
||
|
|
#include "SnippetRender.h"
|
||
|
|
|
||
|
|
bool GLFontRenderer::m_isInit=false;
|
||
|
|
unsigned int GLFontRenderer::m_textureObject=0;
|
||
|
|
int GLFontRenderer::m_screenWidth=640;
|
||
|
|
int GLFontRenderer::m_screenHeight=480;
|
||
|
|
float GLFontRenderer::m_color[4]={1.0f, 1.0f, 1.0f, 1.0f};
|
||
|
|
|
||
|
|
namespace
|
||
|
|
{
|
||
|
|
struct RGBAPixel
|
||
|
|
{
|
||
|
|
unsigned char R,G,B,A;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define PIXEL_OPAQUE 0xff
|
||
|
|
}
|
||
|
|
|
||
|
|
bool GLFontRenderer::init()
|
||
|
|
{
|
||
|
|
glGenTextures(1, (GLuint*)&m_textureObject);
|
||
|
|
if(!m_textureObject)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
glBindTexture(GL_TEXTURE_2D, m_textureObject);
|
||
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||
|
|
|
||
|
|
// expand to rgba
|
||
|
|
RGBAPixel* P = new RGBAPixel[OGL_FONT_TEXTURE_WIDTH*OGL_FONT_TEXTURE_HEIGHT];
|
||
|
|
for(int i=0;i<OGL_FONT_TEXTURE_WIDTH*OGL_FONT_TEXTURE_HEIGHT;i++)
|
||
|
|
{
|
||
|
|
if(1)
|
||
|
|
{
|
||
|
|
P[i].R = PIXEL_OPAQUE;
|
||
|
|
P[i].G = PIXEL_OPAQUE;
|
||
|
|
P[i].B = PIXEL_OPAQUE;
|
||
|
|
P[i].A = OGLFontData[i];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
P[i].R = OGLFontData[i];
|
||
|
|
P[i].G = OGLFontData[i];
|
||
|
|
P[i].B = OGLFontData[i];
|
||
|
|
P[i].A = PIXEL_OPAQUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, OGL_FONT_TEXTURE_WIDTH, OGL_FONT_TEXTURE_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, P);
|
||
|
|
|
||
|
|
delete [] P;
|
||
|
|
|
||
|
|
m_isInit = true;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void GLFontRenderer::print(float x, float y, float fontSize, const char* pString, bool forceMonoSpace, int monoSpaceWidth, bool doOrthoProj)
|
||
|
|
{
|
||
|
|
if(1)
|
||
|
|
{
|
||
|
|
const float Saved0 = m_color[0];
|
||
|
|
const float Saved1 = m_color[1];
|
||
|
|
const float Saved2 = m_color[2];
|
||
|
|
|
||
|
|
m_color[0] = 0.0f;
|
||
|
|
m_color[1] = 0.0f;
|
||
|
|
m_color[2] = 0.0f;
|
||
|
|
|
||
|
|
// const float Offset = fontSize * 0.05f;
|
||
|
|
// const float Offset = fontSize * 0.075f;
|
||
|
|
const float Offset = fontSize * 0.1f;
|
||
|
|
|
||
|
|
print_(x+Offset, y-Offset, fontSize, pString, forceMonoSpace, monoSpaceWidth, doOrthoProj);
|
||
|
|
//print_(x-Offset, y-Offset, fontSize, pString, forceMonoSpace, monoSpaceWidth, doOrthoProj);
|
||
|
|
//print_(x+Offset, y+Offset, fontSize, pString, forceMonoSpace, monoSpaceWidth, doOrthoProj);
|
||
|
|
//print_(x-Offset, y+Offset, fontSize, pString, forceMonoSpace, monoSpaceWidth, doOrthoProj);
|
||
|
|
|
||
|
|
m_color[0] = Saved0;
|
||
|
|
m_color[1] = Saved1;
|
||
|
|
m_color[2] = Saved2;
|
||
|
|
}
|
||
|
|
print_(x, y, fontSize, pString, forceMonoSpace, monoSpaceWidth, doOrthoProj);
|
||
|
|
}
|
||
|
|
|
||
|
|
void GLFontRenderer::print_(float x, float y, float fontSize, const char* pString, bool forceMonoSpace, int monoSpaceWidth, bool doOrthoProj)
|
||
|
|
{
|
||
|
|
x = x*m_screenWidth;
|
||
|
|
y = y*m_screenHeight;
|
||
|
|
fontSize = fontSize*m_screenHeight;
|
||
|
|
|
||
|
|
if(!m_isInit)
|
||
|
|
m_isInit = init();
|
||
|
|
|
||
|
|
unsigned int num = (unsigned int)(strlen(pString));
|
||
|
|
if(m_isInit && num > 0)
|
||
|
|
{
|
||
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||
|
|
glDisable(GL_DEPTH_TEST);
|
||
|
|
glDisable(GL_LIGHTING);
|
||
|
|
|
||
|
|
glEnable(GL_TEXTURE_2D);
|
||
|
|
glBindTexture(GL_TEXTURE_2D, m_textureObject);
|
||
|
|
|
||
|
|
if(doOrthoProj)
|
||
|
|
{
|
||
|
|
glMatrixMode(GL_PROJECTION);
|
||
|
|
glPushMatrix();
|
||
|
|
glLoadIdentity();
|
||
|
|
glOrtho(0, m_screenWidth, 0, m_screenHeight, -1, 1);
|
||
|
|
}
|
||
|
|
glMatrixMode(GL_MODELVIEW);
|
||
|
|
glPushMatrix();
|
||
|
|
glLoadIdentity();
|
||
|
|
|
||
|
|
glEnable(GL_BLEND);
|
||
|
|
glDisable(GL_CULL_FACE);
|
||
|
|
|
||
|
|
glColor4f(m_color[0], m_color[1], m_color[2], m_color[3]);
|
||
|
|
|
||
|
|
const float glyphHeightUV = ((float)OGL_FONT_CHARS_PER_COL)/OGL_FONT_TEXTURE_HEIGHT*2 - 1.0f/128.0f;
|
||
|
|
//const float glyphHeightUV = ((float)OGL_FONT_CHARS_PER_COL)/OGL_FONT_TEXTURE_HEIGHT*2;
|
||
|
|
|
||
|
|
float translate = 0.0f;
|
||
|
|
|
||
|
|
float* pVertList = new float[num*3*6];
|
||
|
|
float* pTextureCoordList = new float[num*2*6];
|
||
|
|
|
||
|
|
int vertIndex = 0;
|
||
|
|
int textureCoordIndex = 0;
|
||
|
|
|
||
|
|
float translateDown = 0.0f;
|
||
|
|
unsigned int count = 0;
|
||
|
|
|
||
|
|
for(unsigned int i=0;i<num; i++)
|
||
|
|
{
|
||
|
|
const float glyphWidthUV = ((float)OGL_FONT_CHARS_PER_ROW)/OGL_FONT_TEXTURE_WIDTH;
|
||
|
|
|
||
|
|
if (pString[i] == '\n')
|
||
|
|
{
|
||
|
|
translateDown-=0.005f*m_screenHeight+fontSize;
|
||
|
|
translate = 0.0f;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
int c = pString[i]-OGL_FONT_CHAR_BASE;
|
||
|
|
if (c < OGL_FONT_CHARS_PER_ROW*OGL_FONT_CHARS_PER_COL)
|
||
|
|
{
|
||
|
|
count++;
|
||
|
|
|
||
|
|
float glyphWidth = (float)GLFontGlyphWidth[c]+1;
|
||
|
|
if(forceMonoSpace)
|
||
|
|
glyphWidth = (float)monoSpaceWidth;
|
||
|
|
|
||
|
|
glyphWidth = glyphWidth*(fontSize/(((float)OGL_FONT_TEXTURE_WIDTH)/OGL_FONT_CHARS_PER_ROW))-0.01f;
|
||
|
|
|
||
|
|
const float cxUV = float((c)%OGL_FONT_CHARS_PER_ROW)/OGL_FONT_CHARS_PER_ROW+0.008f;
|
||
|
|
const float cyUV = float((c)/OGL_FONT_CHARS_PER_ROW)/OGL_FONT_CHARS_PER_COL+0.008f;
|
||
|
|
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cxUV;
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cyUV+glyphHeightUV;
|
||
|
|
|
||
|
|
pVertList[vertIndex++] = x+0+translate;
|
||
|
|
pVertList[vertIndex++] = y+0+translateDown;
|
||
|
|
pVertList[vertIndex++] = 0;
|
||
|
|
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cxUV+glyphWidthUV;
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cyUV;
|
||
|
|
|
||
|
|
pVertList[vertIndex++] = x+fontSize+translate;
|
||
|
|
pVertList[vertIndex++] = y+fontSize+translateDown;
|
||
|
|
pVertList[vertIndex++] = 0;
|
||
|
|
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cxUV;
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cyUV;
|
||
|
|
|
||
|
|
pVertList[vertIndex++] = x+0+translate;
|
||
|
|
pVertList[vertIndex++] = y+fontSize+translateDown;
|
||
|
|
pVertList[vertIndex++] = 0;
|
||
|
|
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cxUV;
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cyUV+glyphHeightUV;
|
||
|
|
|
||
|
|
pVertList[vertIndex++] = x+0+translate;
|
||
|
|
pVertList[vertIndex++] = y+0+translateDown;
|
||
|
|
pVertList[vertIndex++] = 0;
|
||
|
|
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cxUV+glyphWidthUV;
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cyUV+glyphHeightUV;
|
||
|
|
|
||
|
|
pVertList[vertIndex++] = x+fontSize+translate;
|
||
|
|
pVertList[vertIndex++] = y+0+translateDown;
|
||
|
|
pVertList[vertIndex++] = 0;
|
||
|
|
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cxUV+glyphWidthUV;
|
||
|
|
pTextureCoordList[textureCoordIndex++] = cyUV;
|
||
|
|
|
||
|
|
pVertList[vertIndex++] = x+fontSize+translate;
|
||
|
|
pVertList[vertIndex++] = y+fontSize+translateDown;
|
||
|
|
pVertList[vertIndex++] = 0;
|
||
|
|
|
||
|
|
translate+=glyphWidth;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
||
|
|
// glVertexPointer(3, GL_FLOAT, num*6, pVertList);
|
||
|
|
glVertexPointer(3, GL_FLOAT, 3*4, pVertList);
|
||
|
|
|
||
|
|
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
||
|
|
// glTexCoordPointer(2, GL_FLOAT, num*6, pTextureCoordList);
|
||
|
|
glTexCoordPointer(2, GL_FLOAT, 2*4, pTextureCoordList);
|
||
|
|
|
||
|
|
glDrawArrays(GL_TRIANGLES, 0, count*6);
|
||
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
||
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
||
|
|
|
||
|
|
delete[] pVertList;
|
||
|
|
delete[] pTextureCoordList;
|
||
|
|
|
||
|
|
// glMatrixMode(GL_MODELVIEW);
|
||
|
|
// glPopMatrix();
|
||
|
|
|
||
|
|
if(doOrthoProj)
|
||
|
|
{
|
||
|
|
glMatrixMode(GL_PROJECTION);
|
||
|
|
glPopMatrix();
|
||
|
|
}
|
||
|
|
glMatrixMode(GL_MODELVIEW);
|
||
|
|
glPopMatrix();
|
||
|
|
|
||
|
|
glEnable(GL_DEPTH_TEST);
|
||
|
|
glEnable(GL_LIGHTING);
|
||
|
|
glDisable(GL_TEXTURE_2D);
|
||
|
|
glDisable(GL_BLEND);
|
||
|
|
glEnable(GL_CULL_FACE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void GLFontRenderer::setScreenResolution(int screenWidth, int screenHeight)
|
||
|
|
{
|
||
|
|
m_screenWidth = screenWidth;
|
||
|
|
m_screenHeight = screenHeight;
|
||
|
|
}
|
||
|
|
|
||
|
|
void GLFontRenderer::setColor(float r, float g, float b, float a)
|
||
|
|
{
|
||
|
|
m_color[0] = r;
|
||
|
|
m_color[1] = g;
|
||
|
|
m_color[2] = b;
|
||
|
|
m_color[3] = a;
|
||
|
|
}
|