OpenGL之紋理映射字體

因為『3D輪廓字體』只是填充純色,但可以對『3D輪廓字體』應用紋理映射,以增強其外觀效果.紋理座標可以讓OpenGL自動生成.演示程式下載:

1.讓OpenGL為文本生成紋理座標,並固定於3D模型

glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);

glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);

glEnable(GL_TEXTURE_GEN_S);

glEnable(GL_TEXTURE_GEN_T);

2.載入紋理

Load_File_Texture(&font3D->texture, hInstance, filename);

3.綁定紋理

glBindTexture(GL_TEXTURE_2D, texture->texID);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);