opengl/Texture/TextureObject.cpp

#include <stdio.h>

#include <ocean/GLvish/VRenderObject.hpp>
#include <ocean/plankton/VCreator.hpp>
#include <ocean/plankton/VTime.hpp>
#include <ocean/GLvish/BoundingBox.hpp>

#include <stdio.h>

using namespace Wizt;


/*
 Render object.

Based on:
 http://www.opengl.org/resources/code/samples/glut_examples/examples/abgr.c
 */
class   TextureObject : public VRenderObject
{
        GLubyte ubImage[65536];

        virtual void render(VRenderContext&Context) const;

public:
        TypedSlot<double>       Complexity;

        TextureObject(const string&name, int p, const RefPtr<VCreationPreferences>&VP)
        : VRenderObject(name, p, VP)
        {
        int j; 
        GLubyte *img; 
        GLsizei imgWidth = 128; 

                /* Create image */ 
                img = ubImage; 
                for (j = 0; j < 32 * imgWidth; j++) {
                        *img++ = 0xff;
                        *img++ = 0x00;
                        *img++ = 0x00;
                        *img++ = 0xff;
                } 
                for (j = 0; j < 32 * imgWidth; j++) {
                        *img++ = 0xff;
                        *img++ = 0x00;
                        *img++ = 0xff; 
                        *img++ = 0x00;
                } 
                for (j = 0; j < 32 * imgWidth; j++) {
                        *img++ = 0xff; 
                        *img++ = 0xff; 
                        *img++ = 0x00; 
                        *img++ = 0x00;
                } 
                for (j = 0; j < 32 * imgWidth; j++) {
                        *img++ = 0x00; 
                        *img++ = 0xff; 
                        *img++ = 0x00; 
                        *img++ = 0xff;
                }
        }

        ~TextureObject()
        {}
};

void TextureObject::render(VRenderContext&Context) const
{
        glMatrixMode(GL_PROJECTION); 
        glLoadIdentity(); 
        gluPerspective(60.0, 1.0, 0.1, 1000.0); 
        glMatrixMode(GL_MODELVIEW); 
        glDisable(GL_DITHER);

{
  glEnable(GL_TEXTURE_2D);
  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);

#if GL_EXT_abgr
  glTexImage2D(GL_TEXTURE_2D, 0, 3, 128, 128, 0, GL_ABGR_EXT,
    GL_UNSIGNED_BYTE, ubImage);

  glBegin(GL_POLYGON);
  glTexCoord2f(1.0, 1.0);
  glVertex3f(-0.2, 0.8, -100.0);
  glTexCoord2f(0.0, 1.0);
  glVertex3f(-0.8, 0.8, -2.0);
  glTexCoord2f(0.0, 0.0);
  glVertex3f(-0.8, 0.2, -2.0);
  glTexCoord2f(1.0, 0.0);
  glVertex3f(-0.2, 0.2, -100.0);
  glEnd();
#endif

  glTexImage2D(GL_TEXTURE_2D, 0, 3, 128, 128, 0, GL_RGB,
    GL_UNSIGNED_BYTE, ubImage);

  glBegin(GL_POLYGON);
  glTexCoord2f(1.0, 1.0);
  glVertex3f(0.8, 0.8, -2.0);
  glTexCoord2f(0.0, 1.0);
  glVertex3f(0.2, 0.8, -100.0);
  glTexCoord2f(0.0, 0.0);
  glVertex3f(0.2, 0.2, -100.0);
  glTexCoord2f(1.0, 0.0);
  glVertex3f(0.8, 0.2, -2.0);
  glEnd();

  glDisable(GL_TEXTURE_2D);
}


}

static Ref<VCreator<TextureObject> > MyCreator("Tutorial/TextureObject", 0);

/*
 This line needs to be contained in ONE source file of each
 VISH plugin module. It's not important which one.
 */
VISH_DEFAULT_INIT

---