opengl-es

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OpenGL constant color

I read in this Apple documentation (under the header \"Avoid Storing Constants in Attribute Arrays\") it says that if a model\'s vertices all have the same colour then colour shouldn\'t be a vertex at[详细]

2023-04-08 16:10 分类：问答
How to modify a bound texture in OpenGL ES 1.1

My platform is iPhone - OpenGL ES 1.1 开发者_C百科 I\'m looking for the tutorial about modifying or drawing to a texture.[详细]

2023-04-08 15:37 分类：问答
OpenGL ES 2.0 Shader best practices

I\'ve been searching for examples of shaders in OpenGL and I\'ve seen some varying styles. Some shaders specifically use the built in types (ie. gl_Vertex) to transfer data to and from the application[详细]

2023-04-08 15:34 分类：问答
Stuck in glDrawElements

I have a very strange problem. My game engine performs loading of model asynchronously. After that it is added to the rendering loop.[详细]

2023-04-08 14:27 分类：问答
using mipmaps with ETC1 textures

Ive modified my code to use ETC1 textures to help lower memory usage and while the texture loads, its not automatically generating mipmaps anymore. Is this not supported for ETC1 images? Heres my code[详细]

2023-04-08 14:21 分类：问答
Android GL ES2 buffer issue: garbled data

I am trying to save whatever is rendered on screen in a Open GL ES2 application, by not calling glClear on a renderbuffer or the framebuffer.[详细]

2023-04-08 10:55 分类：问答
Drawing text with transparent background

I use code like below to update text (i开发者_运维百科n a bitmap) dynamically into a texture: public void UpdateTexture(GL10 gl, int x, int y, int textureId, Bitmap bitmap)[详细]

2023-04-08 08:39 分类：问答
OpenGL ES OBJ Loading Transparency Issues

Hi I am working on an OBJ loader for use in iOS programming, I have managed to load the vertices and the faces but I have an issue with the transparency of the faces.[详细]

2023-04-08 06:21 分类：问答
Paint app for ipad [opengl-es] line strokes not proper

I have a strange problem with openGL. I am working on paint app for both iphone and ipad. I am using opengl-es for my app. In my app I am filling colors in outline images, drawings a line onscreen bas[详细]

2023-04-08 05:04 分类：问答
How can I smooth texture objects in OpenGL ES 1.1 (iPhone)

I\'m currently experimenting with OpenGL ES 1.1 on the iPhone and trying to get my head around some of the basics.So far I\'ve managed to draw a grid of objects which are lit with one GL_LIGHT.Here is[详细]

2023-04-08 04:48 分类：问答