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mostafizurrahman / MultipleTexture_iOS_OpenGL

This project is used to upload 3 images as texture in OpengGLES 2.0. two jpg image and one PNG image as masked. Second image is drawn over first image and top image is masked using another PNG image. PNG image conatins transparency in which top image is shown. But mask image color is erased and background image visible there.
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Background turns green #1

Open jeruik opened 3 years ago

jeruik commented 3 years ago 
    _brushTexture = [self setupTexture:@"3.png"];
    _floorTexture = [self setupTexture:@"1.png"];
    _bwTexture = [self setupTexture:@"2.png"];

This is how I load it. Below is the preview of the three pictures 1 2 3,

The following is the final view effect

WechatIMG439

The black is the viewcontroller background and the green view is the OpenGLView. In fact, I set a square 100x100, but I don’t know why the final result view is only half and it has been stretched. I hope to get a layer that does not stretch and the background is transparent. I am a newbie to opengl, and I have tried many solutions but failed. I hope to get help from you. Thank you very much.

mostafizurrahman commented 3 years ago

Multiply the height by screen ration before rendering on screen that is before calling present render buffer

On Sun, 31 Jan, 2021 at 3:19 PM, 小菜 notifications@github.com wrote:

_brushTexture = [self setupTexture:@"3.png"];

_floorTexture = [self setupTexture:@"1.png"];

_bwTexture = [self setupTexture:@"2.png"];

This is how I load it. Below is the preview of the three pictures [image: 1] https://user-images.githubusercontent.com/13136773/106379523-93036300-63e7-11eb-821f-10306955ead2.png [image: 2] https://user-images.githubusercontent.com/13136773/106379526-94349000-63e7-11eb-82ae-9298d1460e2e.png [image: 3] https://user-images.githubusercontent.com/13136773/106379527-94cd2680-63e7-11eb-8069-4537d8d36db6.png ,

The following is the final view effect

[image: WechatIMG439] https://user-images.githubusercontent.com/13136773/106379589-f1304600-63e7-11eb-9a3b-293f0abc4e8c.jpeg

The black is the viewcontroller background and the green view is the OpenGLView. In fact, I set a square 100x100, but I don’t know why the final result view is only half and it has been stretched. I hope to get a layer that does not stretch and the background is transparent. I am a newbie to opengl, and I have tried many solutions but failed. I hope to get help from you. Thank you very much.

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-- Sincerely- Mostafizur Rahman Software Engineer SureCash Progoti Systems Ltd. Borak Mehnur, Banani, Dhaka-1212

jeruik commented 3 years ago

Thank you very much for your reply, But I don’t know why it becomes green, do you know how to change green to transparent