textures

I'm trying to accelerate the drawing of a full-screen texture which changes every frame. On my system, I can get around 1000 FPS using GDI and BitBlt(), but I thought I could improve performance by using Direct3D and dynamic textures. Instead I'm only getting around 250 FPS. I'm running on a Mac Pro with an ATI HD 4870 with current drivers. I've tried using dynamic textures and that gives me a small gain (~15FPS) and I've tried using a texture chain to avoid pipeline stalls and that has no effect. I've looked around quite a bit and there's very little information on using dynamic textures this

So I am trying to build a 3D based world consisting of tiles. I have successfully managed to do this using the plane geometry and height values etc. But now I have come to a point where I possibly have to change everything. The problem is that I want a tile to have multiple textures (using a shader because I want to blend them). I was able to do this globally (so each tile would have same textures + using some uv mapping). However I fail to understand how I would be able to specify which tile has which textures (and I have about a 100 textures), since the plane geometry has only 1 shader

I have a OpenGL ES 2.0 app with 6 different textures. What I need is to draw and move them all at the same time. I was able to do it, but the movement was laggy because I was loading the bitmaps into the textures all the time. For each texture, I do the following on the Render method: setupImage(texture1); GLES20.glVertexAttribPointer(mPositionHandle, 3, GLES20.GL_FLOAT, false, 0, vertexBufferT1); GLES20.glVertexAttribPointer(mTexCoordLoc, 2, GLES20.GL_FLOAT, false, 0, uvBufferT1); GLES20.glDrawElements(GLES20.GL_TRIANGLES, indicesT1.length, GLES20.GL_UNSIGNED_SHORT, drawListBufferT1); And on

I am writing a small app that at the moment generates a random map of textures. I am drawing this map as a 10 x 15 group of "quads" which are infact all triangle strips. I use the "map" to grab an int which I then take as the location of the texture for this square in the textureAtlas. so for example 0 is the bottom left "tile". The atlas is 128 x 128 and split into 32 pixel tiles. However I seem to be getting some odd artifacts where the texture from the one tile is creeping in to the next tile. I wondered if it was the image itself but as far as I can tell the pixels are exactly where they

this is a weird one. I have a basic application (dashboard, ...) and a GLSurfaceview in which I draw 3D objects and textures. All runs pretty but when I go back in other activities, hmm well a screenshot is better than words: This is the dashboard before this is the opengl: And this is my dashboard when I press back: As you can see, the images are gone and text too. I run on 4.0+ so I suppose this is because android draws elements with opengl, as it doesn't do that on my 2.2 device. Do you have an idea of what is causing this? It does not happen when I don't use texture btw. Ok I found what