bool activate_offscreen() {
#if defined(VSXU_OPENGL_ES) || defined (__APPLE__)
glGetIntegerv (GL_VIEWPORT, viewport);
#endif
bool rebuild = false;
if (alpha_channel->get() != alpha_channel_int)
{
alpha_channel_int = alpha_channel->get();
rebuild = true;
}
if (float_texture->get() != float_texture_int)
{
float_texture_int = float_texture->get();
rebuild = true;
}
if (multisample->get() != multisample_int)
{
multisample_int = multisample->get();
rebuild = true;
}
if (multisample->get() != multisample_int)
{
multisample_int = multisample->get();
rebuild = true;
}
if (texture_size->get() >= 10)
{
glGetIntegerv (GL_VIEWPORT, viewport);
int t_res_x = abs(viewport[2] - viewport[0]);
int t_res_y = abs(viewport[3] - viewport[1]);
if (texture_size->get() == 10) {
if (t_res_x != res_x || t_res_y != res_y) rebuild = true;
}
if (texture_size->get() == 11) {
if (t_res_x / 2 != res_x || t_res_y / 2 != res_y) rebuild = true;
}
if (texture_size->get() == 12) {
if (t_res_x / 4 != res_x || t_res_y / 4 != res_y) rebuild = true;
}
if (texture_size->get() == 13) {
if (t_res_x * 2 != res_x || t_res_y * 2 != res_y) rebuild = true;
}
if (texture_size->get() == 14) {
if (t_res_x * 4 != res_x || t_res_y * 4 != res_y) rebuild = true;
}
}
if (texture_size->get() != tex_size_internal || rebuild)
{
//printf("generating new framebuffer\n");
tex_size_internal = texture_size->get();
switch (tex_size_internal) {
case 0: res_y = res_x = 2048; break;
case 1: res_y = res_x = 1024; break;
case 2: res_y = res_x = 512; break;
case 3: res_y = res_x = 256; break;
case 4: res_y = res_x = 128; break;
case 5: res_y = res_x = 64; break;
case 6: res_y = res_x = 32; break;
case 7: res_y = res_x = 16; break;
case 8: res_y = res_x = 8; break;
case 9: res_y = res_x = 4; break;
case 10: res_x = abs(viewport[2] - viewport[0]); res_y = abs(viewport[3] - viewport[1]); break;
case 11: res_x = abs(viewport[2] - viewport[0]) / 2; res_y = abs(viewport[3] - viewport[1]) / 2; break;
case 12: res_x = abs(viewport[2] - viewport[0]) / 4; res_y = abs(viewport[3] - viewport[1]) / 4; break;
case 13: res_x = abs(viewport[2] - viewport[0]) * 2; res_y = abs(viewport[3] - viewport[1]) * 2; break;
case 14: res_x = abs(viewport[2] - viewport[0]) * 4; res_y = abs(viewport[3] - viewport[1]) * 4; break;
};
texture->reinit_color_depth_buffer
(
res_x,
res_y,
float_texture_int,
alpha_channel_int,
multisample_int
);
}
texture->begin_capture_to_buffer();
//printf("changing viewport to %d\n",res_x);
glViewport(0,0,res_x,res_y);
glDepthMask(GL_TRUE);
glEnable(GL_BLEND);
glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&glsl_prog);
if ( atof((char*)glGetString(GL_VERSION)) >= 2.0 )
glUseProgram(0);
else
glUseProgramObjectARB(0);
loading_done = true;
return true;
}
bool activate_offscreen() {
#if defined(VSXU_OPENGL_ES) || defined (__APPLE__)
glGetIntegerv (GL_VIEWPORT, viewport);
#endif
bool rebuild = false;
if (support_feedback->get() != support_feedback_int)
{
support_feedback_int = support_feedback->get();
rebuild = true;
}
if (alpha_channel->get() != alpha_channel_int)
{
alpha_channel_int = alpha_channel->get();
rebuild = true;
}
if (float_texture->get() != float_texture_int)
{
float_texture_int = float_texture->get();
rebuild = true;
}
if (multisample->get() != multisample_int)
{
multisample_int = multisample->get();
rebuild = true;
}
if (multisample->get() != multisample_int)
{
multisample_int = multisample->get();
rebuild = true;
}
if (texture_size->get() >= 10)
{
glGetIntegerv (GL_VIEWPORT, viewport);
int t_res_x = abs(viewport[2] - viewport[0]);
int t_res_y = abs(viewport[3] - viewport[1]);
if (texture_size->get() == 10) {
if (t_res_x != res_x || t_res_y != res_y) rebuild = true;
}
if (texture_size->get() == 11) {
if (t_res_x / 2 != res_x || t_res_y / 2 != res_y) rebuild = true;
}
if (texture_size->get() == 12) {
if (t_res_x / 4 != res_x || t_res_y / 4 != res_y) rebuild = true;
}
if (texture_size->get() == 13) {
if (t_res_x * 2 != res_x || t_res_y * 2 != res_y) rebuild = true;
}
if (texture_size->get() == 14) {
if (t_res_x * 4 != res_x || t_res_y * 4 != res_y) rebuild = true;
}
}
if (texture_size->get() != tex_size_internal || rebuild) {
//printf("generating new framebuffer\n");
tex_size_internal = texture_size->get();
switch (tex_size_internal) {
case 0: res_y = res_x = 2048; break;
case 1: res_y = res_x = 1024; break;
case 2: res_y = res_x = 512; break;
case 3: res_y = res_x = 256; break;
case 4: res_y = res_x = 128; break;
case 5: res_y = res_x = 64; break;
case 6: res_y = res_x = 32; break;
case 7: res_y = res_x = 16; break;
case 8: res_y = res_x = 8; break;
case 9: res_y = res_x = 4; break;
case 10: res_x = abs(viewport[2] - viewport[0]); res_y = abs(viewport[3] - viewport[1]); break;
case 11: res_x = abs(viewport[2] - viewport[0]) / 2; res_y = abs(viewport[3] - viewport[1]) / 2; break;
case 12: res_x = abs(viewport[2] - viewport[0]) / 4; res_y = abs(viewport[3] - viewport[1]) / 4; break;
case 13: res_x = abs(viewport[2] - viewport[0]) * 2; res_y = abs(viewport[3] - viewport[1]) * 2; break;
case 14: res_x = abs(viewport[2] - viewport[0]) * 4; res_y = abs(viewport[3] - viewport[1]) * 4; break;
};
if (0 == support_feedback_int)
{
texture->reinit_color_depth_buffer
(
res_x,
res_y,
float_texture_int,
alpha_channel_int,
multisample_int
);
texture->bind();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL,0);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
texture->_bind();
}
if (1 == support_feedback_int)
{
// feedback textures ignores foreign depth buffer...
texture->reinit_color_depth_buffer
(
res_x,
res_y,
float_texture_int,
alpha_channel_int,
multisample_int
);
texture->bind();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL,0);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
texture->_bind();
texture2->reinit_color_depth_buffer
(
res_x,
res_y,
float_texture_int,
alpha_channel_int,
multisample_int
);
texture2->bind();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL,0);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
texture2->_bind();
}
}
if (!which_buffer || support_feedback->get() == 0)
texture->begin_capture_to_buffer();
else
texture2->begin_capture_to_buffer();
//printf("changing viewport to %d\n",res_x);
glViewport(0,0,res_x,res_y);
glDepthMask(GL_TRUE);
glClearColor(clear_color->get(0),clear_color->get(1),clear_color->get(2),clear_color->get(3));
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glEnable(GL_BLEND);
glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&glsl_prog);
if ( atof((char*)glGetString(GL_VERSION)) >= 2.0 )
glUseProgram(0);
else
glUseProgramObjectARB(0);
loading_done = true;
return true;
}
