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-newport: Fixed inverted-Y pixel readback. Fixes crash in Alias PowerAnimator 7.5. [Ryan Holtz]

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This commit is contained in:
MooglyGuy 2019-08-26 19:58:00 +02:00
parent 373e586380
commit 1cfe376e69
1 changed files with 3 additions and 2 deletions
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5
src/devices/bus/gio64/newport.cpp
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@ -47,7 +47,7 @@
#define LOG_REJECTS (1 << 9)
#define LOG_ALL (LOG_UNKNOWN | LOG_VC2 | LOG_CMAP | LOG_XMAP | LOG_REX3 | LOG_RAMDAC | LOG_COMMANDS | LOG_REJECTS)
#define VERBOSE (LOG_REX3 | LOG_CMAP | LOG_XMAP | LOG_COMMANDS)
#define VERBOSE (0)
#include "logmacro.h"
DEFINE_DEVICE_TYPE(XMAP9, xmap9_device, "xmap9", "SGI XMAP9")
@ -2925,9 +2925,10 @@ uint32_t newport_base_device::do_pixel_read()
}
LOGMASKED(LOG_COMMANDS, "Read %08x from %04x, %04x\n", ret, src_x, src_y);
m_rex3.m_x_start_i++;
int16_t dy = (m_rex3.m_y_end_i < m_rex3.m_y_start_i) ? -1 : 1;
if (m_rex3.m_x_start_i > m_rex3.m_x_end_i)
{
m_rex3.m_y_start_i++;
m_rex3.m_y_start_i += dy;
m_rex3.m_x_start_i = m_rex3.m_x_save;
}