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https://github.com/xemu-project/xemu.git
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2f45356427
In commit fc97bb5ba3 the lduw_raw() call was
eliminated. But we are reading from the target buffer a 16-bit value, which
is in big-endian format. Therefore, use lduw_be_p() to read the value.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Walle <michael@walle.cc>
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*
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* QEMU model of the Milkymist VGA framebuffer.
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*
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* Copyright (c) 2010 Michael Walle <michael@walle.cc>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#if BITS == 8
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#define COPY_PIXEL(to, r, g, b) \
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do { \
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*to = rgb_to_pixel8(r, g, b); \
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to += 1; \
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} while (0)
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#elif BITS == 15
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#define COPY_PIXEL(to, r, g, b) \
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do { \
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*(uint16_t *)to = rgb_to_pixel15(r, g, b); \
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to += 2; \
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} while (0)
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#elif BITS == 16
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#define COPY_PIXEL(to, r, g, b) \
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do { \
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*(uint16_t *)to = rgb_to_pixel16(r, g, b); \
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to += 2; \
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} while (0)
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#elif BITS == 24
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#define COPY_PIXEL(to, r, g, b) \
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do { \
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uint32_t tmp = rgb_to_pixel24(r, g, b); \
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*(to++) = tmp & 0xff; \
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*(to++) = (tmp >> 8) & 0xff; \
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*(to++) = (tmp >> 16) & 0xff; \
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} while (0)
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#elif BITS == 32
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#define COPY_PIXEL(to, r, g, b) \
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do { \
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*(uint32_t *)to = rgb_to_pixel32(r, g, b); \
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to += 4; \
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} while (0)
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#else
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#error unknown bit depth
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#endif
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static void glue(draw_line_, BITS)(void *opaque, uint8_t *d, const uint8_t *s,
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int width, int deststep)
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{
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uint16_t rgb565;
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uint8_t r, g, b;
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while (width--) {
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rgb565 = lduw_be_p(s);
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r = ((rgb565 >> 11) & 0x1f) << 3;
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g = ((rgb565 >> 5) & 0x3f) << 2;
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b = ((rgb565 >> 0) & 0x1f) << 3;
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COPY_PIXEL(d, r, g, b);
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s += 2;
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}
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}
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#undef BITS
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#undef COPY_PIXEL
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