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annotate ppm.c @ 1925:039553703c20

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Don't apply address and cd register changes to the 'live' registers until pending flag is cleared, but do preserve the upper address bits in the latch. Fixes regression in Overdrive 2 while preserving fix to Mona in 344 bytes
author Michael Pavone <pavone@retrodev.com>
date Mon, 13 Apr 2020 20:43:25 -0700
parents 5f65a16c23ff
children da2e06c42d16
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1263
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
Michael Pavone <pavone@retrodev.com>
parents:
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1 #include <stdint.h>
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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2 #include <stdio.h>
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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3
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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4 void save_ppm(FILE *f, uint32_t *buffer, uint32_t width, uint32_t height, uint32_t pitch)
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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5 {
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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6 fprintf(f, "P6\n%d %d\n255\n", width, height);
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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7 for(uint32_t y = 0; y < height; y++)
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
Michael Pavone <pavone@retrodev.com>
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8 {
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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9 uint32_t *line = buffer;
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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parents:
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10 for (uint32_t x = 0; x < width; x++, line++)
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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11 {
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12 uint8_t buf[3] = {
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13 *line >> 16, //red
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14 *line >> 8, //green
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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15 *line //blue
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16 };
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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17 fwrite(buf, 1, sizeof(buf), f);
5f65a16c23ff Implement raw screenshot functionality requested in ticket:10
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18 }
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19 buffer = buffer + pitch / sizeof(uint32_t);
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20 }
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21 }