Opengl 合成图像时，确保以正确的纵横比渲染图像的最佳方法是什么
我写的东西有点像photoshoppy，因为有一些图像层在彼此上面渲染 每个层渲染到FBO，FBO可以通过效果等运行 虽然用户可以扭曲图像，但我希望图像最初以自己的纵横比渲染 当前，每个图像都绘制到FBO，如下所示：Opengl 合成图像时，确保以正确的纵横比渲染图像的最佳方法是什么,opengl,glsl,aspect-ratio,fbo,sharpgl,Opengl,Glsl,Aspect Ratio,Fbo,Sharpgl,我写的东西有点像photoshoppy，因为有一些图像层在彼此上面渲染 每个层渲染到FBO，FBO可以通过效果等运行 虽然用户可以扭曲图像，但我希望图像最初以自己的纵横比渲染 当前，每个图像都绘制到FBO，如下所示： //fbo is created at the size of the texture if (fboRenderTarget == null) { fboRenderTarget = new RenderTarget(gl);
//fbo is created at the size of the texture
if (fboRenderTarget == null)
{
fboRenderTarget = new RenderTarget(gl);
fboRenderTarget.ChangeRenderTarget(new RenderTargetState(textureInfo.Width, textureInfo.Height, TextureType.LowPrecisionIsNorm));
}
//viewport is set to size of texture
gl.Viewport(0, 0, textureInfo.Width, textureInfo.Height);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, fboRenderTarget.Name);
//draw the texture
//fbo is created at the size of the destination texture
if (fboRenderTarget == null)
{
fboRenderTarget = new RenderTarget(gl);
fboRenderTarget.ChangeRenderTarget(new RenderTargetState(dstTextureInfo.Width, dstTextureInfo.Height, TextureType.LowPrecisionIsNorm));
}
//viewport is set to size of texture
gl.Viewport(0, 0, dstTextureInfo.Width, dstTextureInfo.Height);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT,
....
//SET MATRIX
ShaderPropertySetter.SetUniformMat4(gl, "uModelMatrix_m4", modelMatrix);
if (srcMatrix != null)
ShaderPropertySetter.SetUniformMat4(gl, "uSrcTextureMatrix_m4", srcMatrix.GetAsMat4());
if (dstMatrix != null)
ShaderPropertySetter.SetUniformMat4(gl, "uDstTextureMatrix_m4", dstMatrix.GetAsMat4());