From: ÀÓ¹«Á (yamoo++at++grmanet.sogang.ac.kr)
Date: 10/03/2001 01:55:23
Hi..
I am student of Sogang Univ. in Seoul, Korea, and my name is Im, Moo Jin...
I saw the following reply at Info-Performer Mailing List (2000.10)
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Hi,
did you use glGenTextures to generate the texture name? I did the same
thing and it worked out well. Here is what I did (the main idea):
Init time:
glGenTextures(1, texture)
Post Draw time:
// copy frame buffer to texture
glBindTextureEXT(GL_TEXTURE_2D,texture[1]);
glCopyTexSubImage2DEXT(GL_TEXTURE_2D, 0, 0, 0, 0, 0, sizeX, sizeY);
// draw textured quad with frame buffer texture
pfPushIdentMatrix();
pfEnable(PFEN_TEXTURE);
glEnable(GL_TEXTURE_2D);
glBindTextureEXT(GL_TEXTURE_2D,texture[1]);
glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
glBegin(GL_QUADS);
glColor4f(1.0f,1.0f,1.0f,1.0f);
glTexCoord2f(0.0f,0.0f); glVertex2f(-1.0f,-1.0f);
glTexCoord2f(1.0f,0.0f); glVertex2f(1.007f,-1.0f);
glTexCoord2f(1.0f,1.0f); glVertex2f(1.007f,1.005f);
glTexCoord2f(0.0f,1.0f); glVertex2f(-1.0f,1.005f);
glEnd();
regards, Sylvain
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So. I programming refer to this code.
I want programming simple 2d texture code using OpenGL.
My code is :
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In Main Function :
/* This is from Opengl Programming Guide */
glGenTextures(1, texture);
for(i=0; i<checkImageHeight; i++) {
for(j=0; j<checkImageWidth; j++) {
c = ((((i&0x8)==0)^((j&0x8))==0))*255;
checkImage[i][j][0] = (GLubyte) c;
checkImage[i][j][1] = (GLubyte) c;
checkImage[i][j][2] = (GLubyte) c;
checkImage[i][j][3] = (GLubyte) 255;
}
}
glBindTextureEXT(GL_TEXTURE_2D, texture[1]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, checkImage);
In channelSetup Function :
pfChanTravFunc(chan, PFTRAV_DRAW, drawHUD);
In drawHUD Function :
{
pfClearChan(chan);
pfDraw();
/* post draw */
pfPushIdentMatrix();
pfEnable(PFEN_TEXTURE);
glEnable(GL_TEXTURE_2D);
glBindTextureEXT(GL_TEXTURE_2D, texture[1]);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glBegin(GL_QUADS);
glColor4f(1.0, 1.0, 1.0, 1.0);
glTexCoord2f(0.0, 0.0); glVertex2f(-1.0f,-1.0f);
glTexCoord2f(1.0, 0.0); glVertex2f( 1.0f,-1.0f);
glTexCoord2f(1.0, 1.0); glVertex2f( 1.0f, 1.0f);
glTexCoord2f(0.0, 1.0); glVertex2f(-1.0f, 1.0f);
glEnd();
}
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Please check my code..
What is the problem...?
Because this problem, I can't proceed my job.
Please answer my question.
Besides if possible, send me sample texture program code using Opengl.
Im, Moo Jin
p.s. Sorry, My terrible English..:-)
This archive was generated by hypermail 2b29 : Wed Oct 03 2001 - 01:56:30 PDT