I try the following code, but without any success :
I create my texture like this :
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, @Tex);
glBindTexture(GL_TEXTURE_2D, Tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
TJGLUtils.JavaClass.texImage2D(GL_TEXTURE_2D, // target: Integer;
0, // level: Integer;
aBitmap, // bitmap: JBitmap;
0); // border: Integer =>
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 100, 100, 0, GL_RGBA, GL_UNSIGNED_BYTE, nil);
glBindTexture(GL_TEXTURE_2D, 0);
then later in my main render loop i try to draw the texture with glDrawTexiOES like this :
eglMakeCurrent(eglGetCurrentDisplay, SharedSurface, SharedSurface,
SharedContext);
glViewport(Round(FContentRect.Left * FScale), Round(FContentRect.Top * FScale), Round(FContentRect.Width * FScale),
Round(FContentRect.Height * FScale));
glDepthMask(1);
glClearDepthf(1);
glClearStencil(0);
glClearColor(0, 0, 0, 0);
glClear(GL_DEPTH_BUFFER_BIT or GL_STENCIL_BUFFER_BIT or GL_COLOR_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, Tex);
aParams[0] := 0;
aParams[1] := 0;
aParams[2] := 100;
aParams[3] := 100;
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, @aParams[0]);
glDrawTexiOES(0, 0, 0, 100, 100);
eglSwapBuffers(SharedDisplay, SharedSurface);
but it’s not work 
what did i miss ?
NOTE: i have an glerror (1280) here :
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, @aParams[0]);