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| (Empty) |
| 1 Name | |
| 2 | |
| 3 CHROMIUM_gpu_memory_buffer_image | |
| 4 | |
| 5 Name Strings | |
| 6 | |
| 7 GL_CHROMIUM_gpu_memory_buffer_image | |
| 8 | |
| 9 Version | |
| 10 | |
| 11 Last Modifed Date: Sep 29, 2014 | |
| 12 | |
| 13 Dependencies | |
| 14 | |
| 15 OpenGL ES 2.0 is required. | |
| 16 | |
| 17 GL_CHROMIUM_image is required. | |
| 18 | |
| 19 Overview | |
| 20 | |
| 21 This extension provide a mechanism for creating a GpuMemoryBuffer | |
| 22 backed image resource. | |
| 23 | |
| 24 Issues | |
| 25 | |
| 26 None | |
| 27 | |
| 28 New Tokens | |
| 29 | |
| 30 Accepted by the <usage> parameter of CreateGpuMemoryBufferImageCHROMIUM: | |
| 31 | |
| 32 READ_WRITE_CHROMIUM 0x78F2 | |
| 33 | |
| 34 New Procedures and Functions | |
| 35 | |
| 36 GLuint CreateGpuMemoryBufferImageCHROMIUM(GLsizei width, | |
| 37 GLsizei height, | |
| 38 GLenum internalformat, | |
| 39 GLenum usage) | |
| 40 | |
| 41 Create a GpuMemoryBuffer backed image with width equal to <width> | |
| 42 and height equal to <height> and format equal to <internalformat>. | |
| 43 | |
| 44 Returns a unique identifier for the image that could be used in | |
| 45 subsequent operations. | |
| 46 | |
| 47 INVALID_VALUE is generated if <width> or <height> is nonpositive. | |
| 48 | |
| 49 INVALID_ENUM is generated if <internalformat> is not one of | |
| 50 RGB or RGBA. | |
| 51 | |
| 52 INVALID_ENUM is generated if <usage> is not READ_WRTIE_CHROMIUM. | |
| 53 | |
| 54 On OS X, driver bugs prevent the usage of memory buffers with RGB internal | |
| 55 format. As a workaround, the created GpuMemoryBuffer will always have | |
| 56 internal format RGBA. The caller is responsible for handling this | |
| 57 appropriately. The only support provided by this extension is that calls | |
| 58 that require parameter validation (such as copyTexImage2D and | |
| 59 copyTexSubImage2D) will perform paramter validation as if the internal | |
| 60 format were RGB. | |
| 61 | |
| 62 Errors | |
| 63 | |
| 64 None. | |
| 65 | |
| 66 New State | |
| 67 | |
| 68 None. | |
| 69 | |
| 70 Revision History | |
| 71 | |
| 72 9/29/2014 Documented the extension. | |
| 73 4/12/2016 Added details of OS X RGB workaround. | |
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Chromium Code Reviews
Issue 2648893002:
Remove remaining traces of CreateGpuMemoryBufferImageCHROMIUM (Closed)
