I have built a game in Unity that uses OpenGL ES 1.1 for IOS. I have a nice constant frame rate of 30 until i place a semi transparent texture over the top on my entire scene. I expect the drop in frames is due to the blending overhead with sorting the frame buffer. On … Read more
I’d like to rapidly capture “screenshots” of my OpenGL ES iPhone game and turn them into a video. I’ve tried the following approach (it works but degrades the game play to an unacceptable level): Use glReadPixels to copy the data from the framebuffer to a GLubyte array. Create a CGImageRef from that data. Then create … Read more
As far as I can see, there is no GL_PIXEL_UNPACK_BUFFER. Also, the OpenGL ES 2.0 specification (and as far as I know, no iOS device currently supports OpenGL ES > 2.0) states that glMapBufferOES() can only use GL_ARRAY_BUFFER as a target, yet glTexImage2D() and glTexSubImage2D() only seem to use PBOs if GL_PIXEL_UNPACK_BUFFER is bound. The … Read more
Currently a student, I’m trying to put together a game for iOS. From everywhere I’ve read, it seems any game’s sound and art are apart of their IP and covered under their Copyright. That being said, say I wanted to use the coin sound effect from the original Mario (less than 1s long and used … Read more
Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Game Development Stack Exchange. Closed 8 years ago. Improve this question I’m currently working in the Multimedia industry and although I’m better at design then development. I have knowledge of HTML, CSS, … Read more
I’m trying to draw an Earth, as I’ve found the textures in this site: http://planetpixelemporium.com/earth.html I loaded the diffuse, specular and bump maps: let earthGeometry = SCNSphere(radius: radius) let earthMap = UIImage(named: “Earth_map”) let earthBump = UIImage(named: “Earth_bump”) let earthSpec = UIImage(named: “Earth_specular”) earthGeometry.firstMaterial!.diffuse.contents = earthMap earthGeometry.firstMaterial!.specular.contents = earthSpec let earth = SCNNode(geometry: earthGeometry) But … Read more
I am working on a 3D OpenGL|ES game for iPad. All the models are created in Blender. How should I go about getting my models into my game? I have the following requirements of my models: One texture map Material Skeletal animation data Attachables / Socket Points Answer You need a file format readable on … Read more
I am beginning an Spherical Harmonics shader project for an iOS app I am writing. I have begun by reading this excellent in-depth paper on the subject. The paper describes a scene pre-processing step that involves ray-casting (one bounce, shadow feeler). Can someone describe how ray-casting can be performed using GLSL on iOS? Answer The … Read more
I want control a character on my screen with a continuous swipe gesture. As soon as I do a swipe +x or -x my character moves left or right. And as long as I hold my finger it continuous to move to the direction in that I swiped. When I swipe into the opposite direction … Read more
I tried various ways of getting the interpolation work and generate a perspective correct image, but none of the suggested ways works. My current code is: struct VertexStruct { float4 normalizedPosition [[ position ]]; float4 texCoord; } vertex VertexStruct testVertex(device float4 *vertices [[ buffer(0) ]], uint vid [[ vertex_id ]]) { VertexStruct outVertices; outVertices.normalizedPosition = … Read more
