opengl-es

[Solved] How to show background bitmap on 2D

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When looking at the uv-coordinates and the vertex coordinates, one can see that they do not fit together: vertex ———————————————- 0.0f,0.0f,-1.0f, 0.0f, 0.0f, with,0.0f,-1.0f, 0.0f, 1.0f, <– vertex: change in x, uv: change in y with,heigh,-1.0f, 1.0f, 1.0f, 0.0f,heigh,-1.0f 1.0f, 0.0f In addition, you tell OpenGL in this line: GLES20.glVertexAttribPointer(mTextureCoordinateHandle, 3, GLES20.GL_FLOAT, false, 0, uvBuffer); … Read more

[Solved] How to pass a vertex array as an argument in Objective-C? [closed]

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Sorry for my typo in the post… Here is how I managed to fix it: – (GLuint)make:(float[])meshVerts withSizeOfMeshVerts:(int)sizeMeshVerts { GLuint _vertexArray; GLuint _vertexBuffer; glEnable(GL_DEPTH_TEST); glGenVertexArraysOES(1, &_vertexArray); glBindVertexArrayOES(_vertexArray); glGenBuffers(1, &_vertexBuffer); glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer); glBufferData(GL_ARRAY_BUFFER, sizeMeshVerts, meshVerts, GL_STATIC_DRAW); } solved How to pass a vertex array as an argument in Objective-C? [closed]

[Solved] How to make each component of a 3D OpenGL object touchable in Android? [closed]

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I think you are looking for ray picking or ray intersection. This answer has a link to a iOS sample/video which I believe is what you are after. https://gamedev.stackexchange.com/questions/12360/how-do-you-determine-which-object-surface-the-users-pointing-at-with-lwjgl/12367#12367 Another related SO question: Implementing Ray Picking That should get you started on what you need to do. 1 solved How to make each component of … Read more