diff options
Diffstat (limited to 'src/jogl/classes/com/jogamp/opengl/util')
| -rw-r--r-- | src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java | 57 |
1 files changed, 44 insertions, 13 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java b/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java index e5cf7d0d0..368cbc0a2 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java +++ b/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java @@ -53,7 +53,7 @@ public class GLReadBufferUtil { protected TextureData readTextureData = null; /** - * @param alpha true for RGBA readPixels, otherwise RGB readPixels + * @param alpha true for RGBA readPixels, otherwise RGB readPixels. Disclaimer: Alpha maybe forced on ES platforms! * @param write2Texture true if readPixel's TextureData shall be written to a 2d Texture */ public GLReadBufferUtil(boolean alpha, boolean write2Texture) { @@ -110,17 +110,31 @@ public class GLReadBufferUtil { * * @see #GLReadBufferUtil(boolean, boolean) */ - public void readPixels(GL gl, GLDrawable drawable, boolean flip) { - final int textureInternalFormat, textureDataFormat; - final int textureDataType = GL.GL_UNSIGNED_BYTE; - if(4 == components) { - textureInternalFormat=GL.GL_RGBA; - textureDataFormat=GL.GL_RGBA; - } else { + public boolean readPixels(GL gl, GLDrawable drawable, boolean flip) { + final int textureInternalFormat, textureDataFormat, textureDataType; + final int[] glImplColorReadVals = new int[] { 0, 0 }; + + if(gl.isGL2GL3() && 3 == components) { textureInternalFormat=GL.GL_RGB; textureDataFormat=GL.GL_RGB; + textureDataType = GL.GL_UNSIGNED_BYTE; + } else if(gl.isGLES2Compatible() || gl.isExtensionAvailable("GL_OES_read_format")) { + gl.glGetIntegerv(GL.GL_IMPLEMENTATION_COLOR_READ_FORMAT, glImplColorReadVals, 0); + gl.glGetIntegerv(GL.GL_IMPLEMENTATION_COLOR_READ_TYPE, glImplColorReadVals, 1); + textureInternalFormat = (4 == components) ? GL.GL_RGBA : GL.GL_RGB; + textureDataFormat = glImplColorReadVals[0]; + textureDataType = glImplColorReadVals[1]; + } else { + // RGBA read is safe for all GL profiles + textureInternalFormat = (4 == components) ? GL.GL_RGBA : GL.GL_RGB; + textureDataFormat=GL.GL_RGBA; + textureDataType = GL.GL_UNSIGNED_BYTE; } - final int readPixelSize = drawable.getWidth() * drawable.getHeight() * components ; + + final int tmp[] = new int[1]; + final int readPixelSize = GLBuffers.sizeof(gl, tmp, textureDataFormat, textureDataType, + drawable.getWidth(), drawable.getHeight(), 1, true); + boolean newData = false; if(readPixelSize>readPixelSizeLast) { readPixelBuffer = Buffers.newDirectByteBuffer(readPixelSize); @@ -144,13 +158,30 @@ public class GLReadBufferUtil { readPixelSizeLast = 0; throw new RuntimeException("can not fetch offscreen texture", e); } + } else { + readTextureData.setInternalFormat(textureInternalFormat); + readTextureData.setWidth(drawable.getWidth()); + readTextureData.setHeight(drawable.getHeight()); + readTextureData.setPixelFormat(textureDataFormat); + readTextureData.setPixelType(textureDataType); } - if(null!=readPixelBuffer) { + boolean res = null!=readPixelBuffer; + if(res) { psm.setAlignment(gl, alignment, alignment); readPixelBuffer.clear(); gl.glReadPixels(0, 0, drawable.getWidth(), drawable.getHeight(), textureDataFormat, textureDataType, readPixelBuffer); - readPixelBuffer.rewind(); - if(null != readTexture) { + readPixelBuffer.position(readPixelSize); + readPixelBuffer.flip(); + final int glerr1 = gl.glGetError(); + if(GL.GL_NO_ERROR != glerr1) { + System.err.println("GLReadBufferUtil.readPixels: readPixels error 0x"+Integer.toHexString(glerr1)+ + " "+drawable.getWidth()+"x"+drawable.getHeight()+ + ", fmt 0x"+Integer.toHexString(textureDataFormat)+", type 0x"+Integer.toHexString(textureDataType)+ + ", impl-fmt 0x"+Integer.toHexString(glImplColorReadVals[0])+", impl-type 0x"+Integer.toHexString(glImplColorReadVals[1])+ + ", "+readPixelBuffer+", sz "+readPixelSize); + res = false; + } + if(res && null != readTexture) { if(newData) { readTexture.updateImage(gl, readTextureData); } else { @@ -163,6 +194,7 @@ public class GLReadBufferUtil { } psm.restore(gl); } + return res; } public void dispose(GL gl) { @@ -178,4 +210,3 @@ public class GLReadBufferUtil { } } - |