diff options
| -rw-r--r-- | progs/demos/cubemap.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/progs/demos/cubemap.c b/progs/demos/cubemap.c index 26db42aed5..1f9f290575 100644 --- a/progs/demos/cubemap.c +++ b/progs/demos/cubemap.c @@ -52,6 +52,7 @@ static GLboolean NoClear = GL_FALSE; static GLint FrameParity = 0; static GLenum FilterIndex = 0; static GLint ClampIndex = 0; +static GLboolean supportFBO = GL_FALSE; static struct { @@ -403,6 +404,10 @@ static void init_checkers( void ) glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + if (!supportFBO) + glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); + + /* make colored checkerboard cube faces */ for (f = 0; f < 6; f++) { for (i = 0; i < CUBE_TEX_SIZE; i++) { @@ -426,7 +431,8 @@ static void init_checkers( void ) GL_BGRA, GL_UNSIGNED_BYTE, image); } - glGenerateMipmapEXT(GL_TEXTURE_CUBE_MAP_ARB); + if (supportFBO) + glGenerateMipmapEXT(GL_TEXTURE_CUBE_MAP_ARB); } @@ -503,10 +509,13 @@ static void init( GLboolean useImageFiles ) exit(0); } - /* Needed for glGenerateMipmapEXT + /* Needed for glGenerateMipmapEXT / auto mipmapping */ - if (!strstr(exten, "GL_EXT_framebuffer_object")) { - printf("Sorry, this demo requires GL_EXT_framebuffer_object\n"); + if (strstr(exten, "GL_EXT_framebuffer_object")) { + supportFBO = GL_TRUE; + } + else if (!strstr(exten, "GL_SGIS_generate_mipmap")) { + printf("Sorry, this demo requires GL_EXT_framebuffer_object or GL_SGIS_generate_mipmap\n"); exit(0); } } |