void liquid_render_liquid(map_liquid_type *liq)
{
int lmap_txt_idx;
float uv_shift;
// uv factor
uv_shift=liquid_tide_get_uv_factor(liq);
// get light map
if (!setup.debug_on) {
lmap_txt_idx=liq->lmap_txt_idx;
}
else {
lmap_txt_idx=lmap_white_bitmap.gl_id;
}
// draw the reflection liquid
// or just the regular texture
if (!liquid_render_liquid_create_vertex(liq,uv_shift,FALSE)) return;
liquid_render_liquid_layer(liq,liq->txt_idx,lmap_txt_idx,TRUE);
// count the liquid polys
view.count.liquid_poly+=((liq->vbo.vertex_count+2)>>2);
// draw the overlay?
if ((!liq->overlay.on) || (liq->overlay.txt_idx==-1)) return;
// draw the overlay
view.count.liquid_poly+=((liq->vbo.vertex_count+2)>>2);
if (!liquid_render_liquid_create_vertex(liq,(uv_shift*0.5f),TRUE)) return;
liquid_render_liquid_layer(liq,liq->overlay.txt_idx,lmap_txt_idx,FALSE);
}
void liquid_render_liquid(int tick,map_liquid_type *liq)
{
int v_sz,quad_cnt,frame;
bool shader_on;
texture_type *texture;
view_glsl_light_list_type light_list;
// setup texture
texture=&map.textures[liq->txt_idx];
frame=texture->animate.current_frame&max_texture_frame_mask;
if (texture->additive) {
glBlendFunc(GL_SRC_ALPHA,GL_ONE);
}
else {
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
}
// determine if shader in use
shader_on=(!dim3_debug) && (texture->shader_idx!=-1);
// create vertexes
v_sz=liquid_render_liquid_get_max_vertex(liq);
liquid_render_liquid_create_vertex(tick,liq,v_sz,shader_on);
// create quads
quad_cnt=liquid_render_liquid_create_quads(liq);
if (quad_cnt==0) {
view_unbind_liquid_vertex_object();
return;
}
// start vertex and UV array
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3,GL_FLOAT,0,0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2,GL_FLOAT,0,(void*)((v_sz*3)*sizeof(float)));
// shader drawing
if (shader_on) {
gl_lights_build_from_liquid(liq,&light_list);
gl_shader_draw_start();
gl_shader_draw_execute(texture,liq->txt_idx,frame,-1,1.0f,liq->alpha,&light_list);
glDrawElements(GL_QUADS,(quad_cnt*4),GL_UNSIGNED_INT,(GLvoid*)0);
gl_shader_draw_end();
}
// regular simple texture drawing
else {
// need color pointers for simple drawing
glEnableClientState(GL_COLOR_ARRAY);
glColorPointer(3,GL_FLOAT,0,(void*)((v_sz*(3+2))*sizeof(float)));
// draw texture
gl_texture_transparent_start();
gl_texture_transparent_set(texture->frames[frame].bitmap.gl_id,liq->alpha);
glDrawElements(GL_QUADS,(quad_cnt*4),GL_UNSIGNED_INT,(GLvoid*)0);
gl_texture_transparent_end();
// disable color array
glDisableClientState(GL_COLOR_ARRAY);
}
// end arrays
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
// unmap VBOs
view_unbind_liquid_index_object();
view_unbind_liquid_vertex_object();
}
