Composite buffer area image display method and device
An image display device and image display technology are applied in the directions of image data processing, image data processing, digital output to display equipment, etc., which can solve the problems of large CPU resources, low efficiency and cost of composite buffer image display, and achieve reduction Occupation of CPU resources, avoiding the calculation of overlapping areas, and improving efficiency
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[0020] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0021] See figure 1 As shown, a composite buffer image display method includes the following steps:
[0022] In step S101, when an instruction to display a buffer image is received, a canvas with a transparent channel is created; then, step S102 is entered. It should be noted that the canvas has a transparent channel, so the transparency of each pixel in the canvas can be set as needed. For example, in one of the embodiments, the transparency of each pixel in the canvas is zero. Usually, before the buffer image is drawn on the canvas, the transparency of each pixel in the entire canvas image ...
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