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test_texmem

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This commit is contained in:
David Rose 2002-09-04 00:03:51 +00:00
parent 88f40f429b
commit bbd8b2a343
1 changed files with 23 additions and 5 deletions
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28
panda/src/testbed/test_texmem.cxx
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@ -19,6 +19,8 @@
#include "pandaFramework.h"
#include "geomQuad.h"
#include "textureAttrib.h"
#include "cmath.h"
#include "mathNumbers.h"
NodePath bogus_scene;
@ -56,17 +58,34 @@ event_T(CPT_Event, void *data) {
GeomNode *gnode = new GeomNode("quads");
bogus_scene.attach_new_node(gnode);
PNMImage white_center(tex_x_size / 4, tex_y_size / 4);
white_center.fill(1.0f, 1.0f, 1.0f);
PTA_Colorf colors;
colors.push_back(Colorf(1.0f, 1.0f, 1.0f, 1.0f));
for (int yi = 0; yi < num_quads_side; yi++) {
float y0 = (float)yi / (float)num_quads_side;
float y1 = (float)(yi + 1) / (float)num_quads_side;
// Map the x, y vertices onto a sphere just for fun.
float px0 = ccos((y0 - 0.5f) * MathNumbers::pi_f);
float px1 = ccos((y1 - 0.5f) * MathNumbers::pi_f);
float py0 = csin((y0 - 0.5f) * MathNumbers::pi_f);
float py1 = csin((y1 - 0.5f) * MathNumbers::pi_f);
for (int xi = 0; xi < num_quads_side; xi++) {
float x0 = (float)xi / (float)num_quads_side;
float x1 = (float)(xi + 1) / (float)num_quads_side;
float hx0 = ccos(x0 * MathNumbers::pi_f * 2.0f);
float hx1 = ccos(x1 * MathNumbers::pi_f * 2.0f);
float hy0 = csin(x0 * MathNumbers::pi_f * 2.0f);
float hy1 = csin(x1 * MathNumbers::pi_f * 2.0f);
PNMImage bogus_image(tex_x_size, tex_y_size);
bogus_image.fill(x0, (xi + yi) & 1, y0);
bogus_image.copy_sub_image(white_center,
(tex_x_size - white_center.get_x_size()) / 2,
(tex_y_size - white_center.get_y_size()) / 2);
PT(Texture) tex = new Texture;
tex->set_minfilter(Texture::FT_linear_mipmap_linear);
@ -74,10 +93,10 @@ event_T(CPT_Event, void *data) {
PTA_Vertexf coords;
PTA_TexCoordf uvs;
coords.push_back(Vertexf(x0, 0.0f, y0));
coords.push_back(Vertexf(x1, 0.0f, y0));
coords.push_back(Vertexf(x1, 0.0f, y1));
coords.push_back(Vertexf(x0, 0.0f, y1));
coords.push_back(Vertexf(hx0 * px0, hy0 * px0, py0));
coords.push_back(Vertexf(hx1 * px0, hy1 * px0, py0));
coords.push_back(Vertexf(hx1 * px1, hy1 * px1, py1));
coords.push_back(Vertexf(hx0 * px1, hy0 * px1, py1));
uvs.push_back(TexCoordf(0.0f, 0.0f));
uvs.push_back(TexCoordf(1.0f, 0.0f));
uvs.push_back(TexCoordf(1.0f, 1.0f));
@ -91,7 +110,6 @@ event_T(CPT_Event, void *data) {
gnode->add_geom(quad, RenderState::make(TextureAttrib::make(tex)));
}
}
cerr << "Done.\n";
}