10 static const char *use_flag_str[] = {
11 "#define USE_TEXMAP\n",
12 "#define USE_MIRROR\n"
14 #define NUM_USE_FLAGS ((int)(sizeof use_flag_str / sizeof *use_flag_str))
17 static RenderTarget *rtmirror;
35 if(!rtmirror && !once) {
37 rtmirror = new RenderTarget;
38 if(!rtmirror->create(vp_width, vp_height, GL_SRGB)) {
39 error_log("failed to create mirror render target (%dx%d)\n", vp_width, vp_height);
43 int numsdr = 1 << NUM_USE_FLAGS;
44 shaders = new unsigned int[numsdr];
46 for(int i=0; i<numsdr; i++) {
47 clear_shader_header(0);
49 for(int j=0; j<NUM_USE_FLAGS; j++) {
51 add_shader_header(0, use_flag_str[j]);
55 if(!(shaders[i] = create_program_load("sdr/lightmap.v.glsl", "sdr/lightmap.p.glsl"))) {
58 set_uniform_int(shaders[i], "texmap", MTL_TEX_DIFFUSE);
59 set_uniform_int(shaders[i], "lightmap", MTL_TEX_LIGHTMAP);
60 set_uniform_int(shaders[i], "mirrortex", MTL_TEX_REFLECT);
66 void Renderer::destroy()
70 void Renderer::set_scene(MetaScene *mscn)
75 MetaScene *Renderer::get_scene() const
80 // render mirror reflections if ...
82 mscn->mirrors && /* scene contains mirrors */ \
83 (ropt & RENDER_MIRRORS) && /* mirror rendering is enabled */ \
84 rtmirror /* mirror render target succesfully created */
86 void Renderer::draw() const
90 if(DO_MIRRORS && current_render_target() != rtmirror) {
91 // check if the render target needs resizing
92 if(rtmirror->get_width() != vp_width || rtmirror->get_height() != vp_height) {
93 if(!rtmirror->resize(vp_width, vp_height)) {
94 error_log("failed to resize mirror render target (%dx%d)\n", vp_width, vp_height);
99 FlatMirror *mir = mscn->mirrors;
107 int num = (int)mscn->scenes.size();
108 for(int i=0; i<num; i++) {
109 Scene *scn = mscn->scenes[i];
111 int nobj = (int)scn->objects.size();
112 for(int j=0; j<nobj; j++) {
113 // don't draw mirrors, we already did that earlier (if mirror rendering enabled)
114 if((ropt & RENDER_MIRRORS) && scn->objects[j]->mtl.flat_mirror) {
117 draw_object(scn->objects[j]);
122 void Renderer::draw_object(Object *obj) const
125 SceneNode *n = obj->node;
135 unsigned int use_mask = 0;
136 if(obj->mtl.stdtex[MTL_TEX_DIFFUSE]) {
137 use_mask |= USE_TEXMAP;
139 if(obj->mtl.stdtex[MTL_TEX_REFLECT] && obj->mtl.flat_mirror) {
140 use_mask |= USE_MIRROR;
143 unsigned int sdr = shaders[use_mask];
144 if(use_mask & USE_MIRROR) {
145 float sx = 1.0f / rtmirror->texture()->get_width();
146 float sy = 1.0f / rtmirror->texture()->get_height();
147 set_uniform_float2(sdr, "mirtex_scale", sx, sy);
148 set_uniform_float(sdr, "reflectivity", obj->mtl.reflect);
156 void Renderer::draw_mirror(FlatMirror *mir) const
158 push_render_target(rtmirror);
159 glClearColor(1, 0, 0, 1);
160 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
161 glClearColor(1, 1, 1, 1);
163 glMatrixMode(GL_MODELVIEW);
166 // TODO update mirror plane for movable mirrors?
169 mirmat.mirror(mir->wplane.normal, -dot(mir->wplane.normal, mir->wplane.pt));
170 glMultMatrixf(mirmat[0]);
179 if(dbg_key_pending & 1) {
180 dump_gl_texture(rtmirror->texture()->get_id(), "mirror.ppm");
181 dbg_key_pending &= ~1;
184 int nobj = mir->objects.size();
185 for(int i=0; i<nobj; i++) {
186 Object *obj = (Object*)mir->objects[i];
188 Texture *prev_refl_tex = obj->mtl.stdtex[MTL_TEX_REFLECT];
189 obj->mtl.stdtex[MTL_TEX_REFLECT] = rtmirror->texture();
191 draw_object(mir->objects[i]);
193 obj->mtl.stdtex[MTL_TEX_REFLECT] = prev_refl_tex;