void bar_widget::draw_ticks(GLfloat x_offset, int segments, const SDL_Color& color) const
{
// tick marks
if(segments > 1) {
std::vector<GLfloat>& varray = graphics::global_vertex_array();
varray.clear();
for(int n = 1; n < segments; ++n) {
//GLfloat lx = x_offset + GLfloat((segment_length_ * n + (n - 1) * tick_width_ + 1) * scale_);
GLfloat lx = x_offset + tick_distance_ * n;
varray.push_back(lx);
varray.push_back(GLfloat(y()));
varray.push_back(lx);
varray.push_back(GLfloat(y()+height()));
}
glLineWidth(GLfloat(tick_width_) * scale_);
glColor4ub(color.r, color.g, color.b, 255);
#if defined(USE_GLES2)
gles2::manager gles2_manager(gles2::get_simple_shader());
gles2::active_shader()->shader()->vertex_array(2, GL_FLOAT, 0, 0, &varray.front());
glDrawArrays(GL_LINES, 0, varray.size()/2);
#else
glDisable(GL_TEXTURE_2D);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &varray.front());
glDrawArrays(GL_LINES, 0, varray.size()/2);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnable(GL_TEXTURE_2D);
#endif
glLineWidth(1.0f);
}
}
void view3d_widget::render_texture() const
{
gles2::manager gles2_manager(gles2::shader_program::get_global("texture2d"));
GLint cur_id = graphics::texture::get_current_texture();
glBindTexture(GL_TEXTURE_2D, *texture_);
const int w_odd = width() % 2;
const int h_odd = height() % 2;
const int w = width() / 2;
const int h = height() / 2;
glm::mat4 mvp = proj_2d_ * glm::translate(glm::mat4(1.0f), glm::vec3(x()+w, y()+h, 0.0f));
glUniformMatrix4fv(gles2::active_shader()->shader()->mvp_matrix_uniform(), 1, GL_FALSE, glm::value_ptr(mvp));
GLfloat varray[] = {
GLfloat(-w), GLfloat(-h),
GLfloat(-w), GLfloat(h+h_odd),
GLfloat(w+w_odd), GLfloat(-h),
GLfloat(w+w_odd), GLfloat(h+h_odd)
};
const GLfloat tcarray[] = {
0.0f, GLfloat(height())/tex_height_,
0.0f, 0.0f,
GLfloat(width())/tex_width_, GLfloat(height())/tex_height_,
GLfloat(width())/tex_width_, 0.0f,
};
gles2::active_shader()->shader()->vertex_array(2, GL_FLOAT, 0, 0, varray);
gles2::active_shader()->shader()->texture_array(2, GL_FLOAT, 0, 0, tcarray);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindTexture(GL_TEXTURE_2D, cur_id);
}
