void BMFont::DrawString(
const std::string& text,
int x,
int y,
const glm::mat4& modelview,
const glm::mat4& projection,
const ShaderWithVariables& sh
) const
{
if (text.empty())
return;
if (m_texturePages.empty())
return;
assert(m_texturePages.size() == 1);
std::vector<float> verts;
std::vector<unsigned int> indxs;
PopulateArrays(text, x, y, verts, indxs);
const GLuint prog = sh.prog();
glUseProgram(prog);
{
glUniformMatrix4fv(sh.GetUniLoc("mvmtx"), 1, false, glm::value_ptr(modelview));
glUniformMatrix4fv(sh.GetUniLoc("prmtx"), 1, false, glm::value_ptr(projection));
///@todo Support multiple font pages
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_texturePages[0]);
glUniform1i(sh.GetUniLoc("texImage"), 0);
sh.bindVAO();
{
glBindBuffer(GL_ARRAY_BUFFER, sh.GetVboLoc("vPosition"));
glBufferData(GL_ARRAY_BUFFER, verts.size()*sizeof(float), &verts[0], GL_STATIC_DRAW);
glVertexAttribPointer(sh.GetAttrLoc("vPosition"), 3, GL_FLOAT, GL_FALSE, 5*sizeof(float), NULL);
glVertexAttribPointer(sh.GetAttrLoc("vTexCoord"), 2, GL_FLOAT, GL_FALSE, 5*sizeof(float),
(void*)(3*sizeof(float)));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, sh.GetVboLoc("elements"));
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indxs.size()*sizeof(unsigned int), &indxs[0], GL_STATIC_DRAW);
glDrawElements(GL_TRIANGLES,
indxs.size(),
GL_UNSIGNED_INT,
0);
}
glBindVertexArray(0);
}
glUseProgram(0);
}
void NISParse_CreateKeyframeList(void)
{
AllocateKeyframes();
PopulateArrays();
}
