Mercurial > repos > blastem
diff vdp.c @ 1401:b56c8c51ca5d
Properly release and reacquire framebuffer pointer when switching contexts. Hopefully fixes the LOCKRECT issue some people are seeing with the SDL 2 fallback renderer
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Thu, 15 Jun 2017 09:45:21 -0700 |
| parents | 1eded4f19910 |
| children | 2b34469e3f81 |
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--- a/vdp.c Wed Jun 14 21:59:30 2017 -0700 +++ b/vdp.c Thu Jun 15 09:45:21 2017 -0700 @@ -1761,6 +1761,25 @@ } } +void vdp_release_framebuffer(vdp_context *context) +{ + render_framebuffer_updated(context->flags2 & FLAG2_EVEN_FIELD ? FRAMEBUFFER_EVEN: FRAMEBUFFER_ODD, context->h40_lines > (context->inactive_start + context->border_top) / 2 ? LINEBUF_SIZE : (256+HORIZ_BORDER)); + context->output = context->fb = NULL; +} + +void vdp_reacquire_framebuffer(vdp_context *context) +{ + context->fb = render_get_framebuffer(context->flags2 & FLAG2_EVEN_FIELD ? FRAMEBUFFER_EVEN : FRAMEBUFFER_ODD, &context->output_pitch); + uint16_t lines_max = (context->flags2 & FLAG2_REGION_PAL) + ? 240 + BORDER_TOP_V30_PAL + BORDER_BOT_V30_PAL + : 224 + BORDER_TOP_V28 + BORDER_BOT_V28; + if (context->output_lines <= lines_max && context->output_lines > 0) { + context->output = (uint32_t *)(((char *)context->fb) + context->output_pitch * (context->output_lines - 1)); + } else { + context->output = (uint32_t *)(((char *)context->fb) + context->output_pitch * INVALID_LINE); + } +} + static void render_border_garbage(vdp_context *context, uint32_t address, uint8_t *buf, uint8_t buf_off, uint16_t col) { uint8_t base = col >> 9 & 0x30;