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| Rev | Author | Line No. | Line |
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| 1624 | giacomo | 1 | -------------------------------------- |
| 2 | MESA Demo (reflect) |
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| 3 | |||
| 4 | by |
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| 5 | |||
| 6 | Giacomo Guidi <giacomo@gandalf.sssup.it> |
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| 7 | |||
| 8 | Last update 20/03/2003 |
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| 9 | -------------------------------------- |
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| 10 | |||
| 11 | This is a simple test demo for the MESA (5.0) |
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| 12 | libraries, the low level graphic drivers is |
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| 13 | the SVGA (from the SVGAlib) |
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| 14 | |||
| 15 | See drivers/svga/readme for supported cards |
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| 16 | |||
| 17 | You need a test.png file present in the |
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| 18 | same directory of the demo. Remember that |
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| 19 | the file system support only a DOS FAT16 fs. |
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| 20 | |||
| 21 | The PNGlib will load this file and it |
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| 22 | will be used as a texture. |
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| 23 | |||
| 24 | -------------------------------------- |
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| 25 | |||
| 26 | The demo is composed by: |
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| 27 | |||
| 28 | MAKEFILE The makefile used to compile the application |
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| 29 | README.TXT This file |
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| 30 | INITFILE.C The init file (with fs initialization) |
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| 31 | MESAREF.C The MESA Demo |
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| 32 | TEST.PNG The PNG texture image |
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| 33 | |||
| 34 | -------------------------------------- |
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| 35 | |||
| 36 | - To specify your card change the line |
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| 37 | |||
| 38 | #define CARD <driver name> |
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| 39 | |||
| 40 | - The demo calls the grx and off-screen Mesa functions. |
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| 41 | The resolution must be 16 bitsperpixel (64K colors) and |
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| 42 | the graphic access mode must be linear. |
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| 43 | |||
| 44 | - There are two buffers |
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| 45 | |||
| 46 | The video buffer (video_buf) |
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| 47 | The virtual buffer (rgb_565_buf) |
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| 48 | |||
| 49 | copy_videomem_16to16 links these buffers |
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| 50 | |||
| 51 | - If the texture load fails, sys_end() is called |
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| 52 |