148 lines
5.0 KiB
C++
148 lines
5.0 KiB
C++
// Filename: test_texmem.cxx
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// Created by: drose (03Sep02)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#include "pandaFramework.h"
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#include "geomQuad.h"
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#include "textureAttrib.h"
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#include "cmath.h"
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#include "mathNumbers.h"
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NodePath bogus_scene;
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NodePath old_bogus_scene;
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void
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event_T(CPT_Event, void *data) {
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PandaFramework *framework = (PandaFramework *)data;
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WindowFramework *wf = framework->get_window(0);
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GraphicsStateGuardian *gsg = wf->get_graphics_window()->get_gsg();
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Camera *camera = wf->get_camera(0);
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NodePath models = framework->get_models();
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NodePath render = wf->get_render();
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if (!bogus_scene.is_empty()) {
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// We are undoing a previous shift-t.
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old_bogus_scene = bogus_scene;
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old_bogus_scene.detach_node();
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bogus_scene = NodePath();
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models.show();
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return;
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}
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// We are doing a new shift-t. Hide the normal models, and create a
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// new bogus node to show the texture grid object.
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models.hide();
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bogus_scene = render.attach_new_node("bogus");
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// Try to force a flush of the texture memory by making a scene with
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// lots of bogus textures.
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static const int num_quads_side = 20;
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static const int tex_x_size = 256;
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static const int tex_y_size = 256;
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cerr << "Loading " << num_quads_side * num_quads_side << " textures at "
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<< tex_x_size << ", " << tex_y_size << "\n";
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GeomNode *gnode = new GeomNode("quads");
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bogus_scene.attach_new_node(gnode);
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PNMImage white_center(tex_x_size / 4, tex_y_size / 4);
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white_center.fill(1.0f, 1.0f, 1.0f);
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PTA_Colorf colors;
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colors.push_back(Colorf(1.0f, 1.0f, 1.0f, 1.0f));
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for (int yi = 0; yi < num_quads_side; yi++) {
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float y0 = (float)yi / (float)num_quads_side;
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float y1 = (float)(yi + 1) / (float)num_quads_side;
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// Map the x, y vertices onto a sphere just for fun.
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float px0 = ccos((y0 - 0.5f) * MathNumbers::pi_f);
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float px1 = ccos((y1 - 0.5f) * MathNumbers::pi_f);
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float py0 = csin((y0 - 0.5f) * MathNumbers::pi_f);
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float py1 = csin((y1 - 0.5f) * MathNumbers::pi_f);
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for (int xi = 0; xi < num_quads_side; xi++) {
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float x0 = (float)xi / (float)num_quads_side;
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float x1 = (float)(xi + 1) / (float)num_quads_side;
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float hx0 = ccos(x0 * MathNumbers::pi_f * 2.0f);
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float hx1 = ccos(x1 * MathNumbers::pi_f * 2.0f);
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float hy0 = csin(x0 * MathNumbers::pi_f * 2.0f);
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float hy1 = csin(x1 * MathNumbers::pi_f * 2.0f);
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PNMImage bogus_image(tex_x_size, tex_y_size);
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bogus_image.fill(x0, (xi + yi) & 1, y0);
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bogus_image.copy_sub_image(white_center,
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(tex_x_size - white_center.get_x_size()) / 2,
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(tex_y_size - white_center.get_y_size()) / 2);
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PT(Texture) tex = new Texture;
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tex->set_minfilter(Texture::FT_linear_mipmap_linear);
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tex->load(bogus_image);
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PTA_Vertexf coords;
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PTA_TexCoordf uvs;
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coords.push_back(Vertexf(hx0 * px0, hy0 * px0, py0));
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coords.push_back(Vertexf(hx1 * px0, hy1 * px0, py0));
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coords.push_back(Vertexf(hx1 * px1, hy1 * px1, py1));
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coords.push_back(Vertexf(hx0 * px1, hy0 * px1, py1));
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uvs.push_back(TexCoordf(0.0f, 0.0f));
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uvs.push_back(TexCoordf(1.0f, 0.0f));
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uvs.push_back(TexCoordf(1.0f, 1.0f));
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uvs.push_back(TexCoordf(0.0f, 1.0f));
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PT(GeomQuad) quad = new GeomQuad;
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quad->set_coords(coords);
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quad->set_colors(colors, G_OVERALL);
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quad->set_num_prims(1);
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quad->set_texcoords(uvs, G_PER_VERTEX);
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gnode->add_geom(quad, RenderState::make(TextureAttrib::make(tex)));
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}
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}
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cerr << "Done.\n";
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}
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int
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main(int argc, char *argv[]) {
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PandaFramework framework;
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framework.open_framework(argc, argv);
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framework.set_window_title("Panda Viewer");
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WindowFramework *window = framework.open_window();
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if (window != (WindowFramework *)NULL) {
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// We've successfully opened a window.
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window->enable_keyboard();
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window->setup_trackball();
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framework.get_models().instance_to(window->get_render());
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if (argc < 2) {
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// If we have no arguments, get that trusty old triangle out.
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window->load_default_model(framework.get_models());
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} else {
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window->load_models(framework.get_models(), argc, argv);
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}
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window->loop_animations();
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framework.enable_default_keys();
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framework.get_event_handler().add_hook("shift-t", event_T, &framework);
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framework.main_loop();
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}
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framework.report_frame_rate(nout);
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return (0);
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}
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