# how to create GL\_DEPTH24\_STENCIL8\_OES tex ? **URL:** \ **Category:** PowerVR Insider\ **Created:** [February 14, 2012, 5:42am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308 "2012-02-14T05:42:35Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![mkandula](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/mkandula/32/123_2.png) [@mkandula](https://forums.imgtec.com/u/mkandula)\ **Post date:** [February 14, 2012, 5:42am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/1 "2012-02-14T05:42:35Z")
Hi, I am trying to create a depth24\_stencil8 texture for my framebuffer. I need it to be a texture and not render buffer. here is the code for it //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// glGenFramebuffers(1, &preLightFBO); glBindFramebuffer(GL\_FRAMEBUFFER, preLightFBO); glGenTextures(1, &preLight\_depthTex); glBindTexture(GL\_TEXTURE\_2D, preLight\_depthTex); glTexImage2D(GL\_TEXTURE\_2D, 0, GL\_DEPTH24\_STENCIL8\_OES, prePassBuffersWidth, prePassBuffersHeight, 0, GL\_DEPTH\_STENCIL\_OES, GL\_UNSIGNED\_INT\_24\_8\_OES, 0); glTexParameteri(GL\_TEXTURE\_2D, GL\_TEXTURE\_WRAP\_S, GL\_CLAMP\_TO\_EDGE); glTexParameteri(GL\_TEXTURE\_2D, GL\_TEXTURE\_WRAP\_T, GL\_CLAMP\_TO\_EDGE); glTexParameteri(GL\_TEXTURE\_2D, GL\_TEXTURE\_MIN\_FILTER, GL\_NEAREST); glTexParameteri(GL\_TEXTURE\_2D, GL\_TEXTURE\_MAG\_FILTER, GL\_NEAREST); glFramebufferTexture2D(GL\_FRAMEBUFFER, GL\_DEPTH\_ATTACHMENT, GL\_TEXTURE\_2D, preLight\_depthTex, 0); glFramebufferTexture2D(GL\_FRAMEBUFFER, GL\_STENCIL\_ATTACHMENT,GL\_TEXTURE\_2D, preLight\_depthTex, 0); //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// I am getting GL\_FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT. I check with glError after glTexImage2D, I get GL\_INVALID\_OPERATION. Using these params glTexImage2D(GL\_TEXTURE\_2D, 0, GL\_DEPTH\_STENCIL\_OES, prePassBuffersWidth, prePassBuffersHeight, 0, GL\_DEPTH\_STENCIL\_OES , GL\_UNSIGNED\_INT\_24\_8\_OES, NULL) I get GL\_INVALID\_VALUE I am not doing anything different than whats here [http://www.khronos.org/registry/gles/extensions/OES/OES\_packed\_depth\_stencil.txt](http://www.khronos.org/registry/gles/extensions/OES/OES_packed_depth_stencil.txt) Can someone please help me understand why this will not work ? ---
**Author:** ![arron](https://avatars.discourse-cdn.com/v4/letter/a/87869e/32.png) [@arron](https://forums.imgtec.com/u/arron)\ **Post date:** [February 14, 2012, 9:08am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/2 "2012-02-14T09:08:31Z")
Hi, Your call to glTexImage2D has GL\_DEPTH24\_STENCIL8\_OES as \. According to the spec, only GL\_DEPTH\_STENCIL\_OES is valid. GL\_DEPTH24\_STENCIL8\_OES is valid as \ for glRenderbufferStorage. ---
**Author:** ![mkandula](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/mkandula/32/123_2.png) [@mkandula](https://forums.imgtec.com/u/mkandula)\ **Post date:** [February 14, 2012, 9:37am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/3 "2012-02-14T09:37:30Z")
Hi, Thanks for the reply ! Doing glTexImage2D(GL\_TEXTURE\_2D, 0, GL\_DEPTH\_STENCIL\_OES, prePassBuffersWidth, prePassBuffersHeight, 0, GL\_DEPTH\_STENCIL\_OES, GL\_UNSIGNED\_INT\_24\_8\_OES, 0);       is giving me GL\_INVALID\_VALUE. What would cause this then ? ---
**Author:** ![marco](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/marco/32/96_2.png) [@marco](https://forums.imgtec.com/u/marco)\ **Post date:** [February 14, 2012, 9:47am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/4 "2012-02-14T09:47:01Z")
Hi, do you need the stencil buffer at all? Have you checked that the OES\_packed\_depth\_stencil externsion is supported on your device? If you don’t need the stencil buffer, we’ve got an example in our SDK that boils down to: //Create the shadow map texture glGenTextures(1, &m\_uiShadowMapTexture); glBindTexture(GL\_TEXTURE\_2D, m\_uiShadowMapTexture); // Create the depth texture. glTexImage2D(GL\_TEXTURE\_2D, 0, GL\_DEPTH\_COMPONENT, m\_ui32ShadowMapSize, m\_ui32ShadowMapSize, 0, GL\_DEPTH\_COMPONENT, GL\_UNSIGNED\_INT, NULL); […] glGenFramebuffers(1, &m\_uiFrameBufferObject); glBindFramebuffer(GL\_FRAMEBUFFER, m\_uiFrameBufferObject); glFramebufferTexture2D(GL\_FRAMEBUFFER, GL\_DEPTH\_ATTACHMENT, GL\_TEXTURE\_2D, m\_uiShadowMapTexture, 0); ---
**Author:** ![mkandula](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/mkandula/32/123_2.png) [@mkandula](https://forums.imgtec.com/u/mkandula)\ **Post date:** [February 14, 2012, 10:09am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/5 "2012-02-14T10:09:19Z")
Hi Marco, I have the depth component based FBO texture working and I do need the stencil bufffer for this case. My target device is iPhone and iPad which I am sure supports the stencil buffer. I am running the PVR SDK windows emulation. What I don’t understand is why CPVRTgles2Ext::IsGLExtensionSupported(“GL\_OES\_packed\_depth\_stencil”) is returning false on my PC. My graphic card supports shader model 4.0 and even DX9 supports the packed depth stencil !! ---
**Author:** ![marco](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/marco/32/96_2.png) [@marco](https://forums.imgtec.com/u/marco)\ **Post date:** [February 14, 2012, 10:27am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/6 "2012-02-14T10:27:54Z")
Hi mkandula, the emulation only exposes extensions that are actually available on PowerVR platforms. ---
**Author:** ![peter-quayle](https://avatars.discourse-cdn.com/v4/letter/p/ed8c4c/32.png) [@peter-quayle](https://forums.imgtec.com/u/peter-quayle)\ **Post date:** [February 14, 2012, 10:37am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/7 "2012-02-14T10:37:08Z")
mkandula, what version of the SDK are you using? ---
**Author:** ![mkandula](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/mkandula/32/123_2.png) [@mkandula](https://forums.imgtec.com/u/mkandula)\ **Post date:** [February 14, 2012, 11:34am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/8 "2012-02-14T11:34:39Z")
OGLES2\_WINDOWS\_X86EMULATION\_2.08.28.0634 ---
**Author:** ![marco](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/marco/32/96_2.png) [@marco](https://forums.imgtec.com/u/marco)\ **Post date:** [February 14, 2012, 11:52am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/9 "2012-02-14T11:52:16Z")
mkandula, Could you download and install the most recent SDK version (2.09.29.0649) and try again? It should be supported in that release. ---
**Author:** ![peter-quayle](https://avatars.discourse-cdn.com/v4/letter/p/ed8c4c/32.png) [@peter-quayle](https://forums.imgtec.com/u/peter-quayle)\ **Post date:** [February 14, 2012, 11:53am UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/10 "2012-02-14T11:53:23Z")
Edit : Whoops, Marco beat me to it. GL\_OES\_packed\_depth\_stencil was introduced in the 2.9 version of VFrame so you will need to upgrade to use that extension.peter.quayle2012-02-14 13:13:53 ---
**Author:** ![mkandula](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/mkandula/32/123_2.png) [@mkandula](https://forums.imgtec.com/u/mkandula)\ **Post date:** [February 14, 2012, 12:54pm UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/11 "2012-02-14T12:54:56Z")
But can someone tell me if this feature is supported on iPad and iPhone4 atleast ? ---
**Author:** ![arron](https://avatars.discourse-cdn.com/v4/letter/a/87869e/32.png) [@arron](https://forums.imgtec.com/u/arron)\ **Post date:** [February 14, 2012, 1:32pm UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/12 "2012-02-14T13:32:29Z")
A good way to check these things is to take a look at the GLBenchmark website. Here is the page to the iPhone4 GL environment: [http://www.glbenchmark.com/phonedetails.jsp?benchmark=glpro21&D=Apple+iPhone+4&testgroup=gl](http://www.glbenchmark.com/phonedetails.jsp?benchmark=glpro21&D=Apple+iPhone+4&testgroup=gl). In this case, the iPhone4 does indeed support GL\_OES\_packed\_depth\_stencil. You should be able to find all major consumer devices on that website. ---
**Author:** ![mkandula](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/mkandula/32/123_2.png) [@mkandula](https://forums.imgtec.com/u/mkandula)\ **Post date:** [February 14, 2012, 4:00pm UTC](https://forums.imgtec.com/t/how-to-create-gl-depth24-stencil8-oes-tex/1308/13 "2012-02-14T16:00:50Z")
Wohoo !! updating sorted this issue out !! You guys are the GODs of PVR !! Thank you very much !