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build mipmaps with GLU for texture shader

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This commit is contained in:
Josh Holtrop 2011-05-16 16:26:07 -04:00
parent ab56320889
commit e53e626a63
1 changed files with 10 additions and 1 deletions
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11
wfobj-view.cc
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@ -51,9 +51,18 @@ static GLuint load_texture(const char *fname)
GLuint id = loadTexture(fname); GLuint id = loadTexture(fname);
if (id != 0) if (id != 0)
{ {
int width, height;
glBindTexture(GL_TEXTURE_2D, id); glBindTexture(GL_TEXTURE_2D, id);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height);
char *data = (char *) malloc(4 * width * height);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, width, height, GL_RGBA,
GL_UNSIGNED_BYTE, data);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
free(data);
} }
return id; return id;
} }