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c795fa8447
Do not use the base address to access data in local memory. This is in preparation to allow chip connected via PCI where base address depends on where the BAR is mapped so it will be unknown. Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 79dab21bc6ec4d563aabf265c3bab40e2e95aae8.1492787889.git.balaton@eik.bme.hu Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
145 lines
4 KiB
C
145 lines
4 KiB
C
/*
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* Pixel drawing function templates for QEMU SM501 Device
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*
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* Copyright (c) 2008 Shin-ichiro KAWASAKI
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if DEPTH == 8
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#define BPP 1
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#define PIXEL_TYPE uint8_t
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#elif DEPTH == 15 || DEPTH == 16
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#define BPP 2
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#define PIXEL_TYPE uint16_t
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#elif DEPTH == 32
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#define BPP 4
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#define PIXEL_TYPE uint32_t
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#else
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#error unsupport depth
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#endif
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#ifdef BGR_FORMAT
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#define PIXEL_NAME glue(DEPTH, bgr)
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#else
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#define PIXEL_NAME DEPTH
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#endif /* BGR_FORMAT */
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static void glue(draw_line8_, PIXEL_NAME)(
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uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
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{
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uint8_t v, r, g, b;
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do {
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v = ldub_p(s);
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r = (pal[v] >> 16) & 0xff;
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g = (pal[v] >> 8) & 0xff;
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b = (pal[v] >> 0) & 0xff;
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*(PIXEL_TYPE *)d = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
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s++;
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d += BPP;
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} while (--width != 0);
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}
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static void glue(draw_line16_, PIXEL_NAME)(
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uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
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{
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uint16_t rgb565;
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uint8_t r, g, b;
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do {
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rgb565 = lduw_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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*(PIXEL_TYPE *)d = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
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s += 2;
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d += BPP;
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} while (--width != 0);
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}
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static void glue(draw_line32_, PIXEL_NAME)(
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uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
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{
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uint8_t r, g, b;
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do {
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ldub_p(s);
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#if defined(TARGET_WORDS_BIGENDIAN)
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r = s[1];
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g = s[2];
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b = s[3];
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#else
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b = s[0];
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g = s[1];
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r = s[2];
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#endif
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*(PIXEL_TYPE *)d = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
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s += 4;
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d += BPP;
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} while (--width != 0);
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}
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/**
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* Draw hardware cursor image on the given line.
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*/
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static void glue(draw_hwc_line_, PIXEL_NAME)(SM501State *s, int crt,
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uint8_t *palette, int c_y, uint8_t *d, int width)
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{
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int x, i;
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uint8_t *pixval, bitset = 0;
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/* get hardware cursor pattern */
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uint32_t cursor_addr = get_hwc_address(s, crt);
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assert(0 <= c_y && c_y < SM501_HWC_HEIGHT);
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cursor_addr += SM501_HWC_WIDTH * c_y / 4; /* 4 pixels per byte */
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pixval = s->local_mem + cursor_addr;
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/* get cursor position */
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x = get_hwc_x(s, crt);
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d += x * BPP;
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for (i = 0; i < SM501_HWC_WIDTH && x + i < width; i++) {
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uint8_t v;
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/* get pixel value */
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if (i % 4 == 0) {
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bitset = ldub_p(pixval);
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pixval++;
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}
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v = bitset & 3;
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bitset >>= 2;
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/* write pixel */
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if (v) {
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v--;
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uint8_t r = palette[v * 3 + 0];
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uint8_t g = palette[v * 3 + 1];
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uint8_t b = palette[v * 3 + 2];
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*(PIXEL_TYPE *)d = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
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}
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d += BPP;
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}
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}
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#undef DEPTH
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#undef BPP
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#undef PIXEL_TYPE
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#undef PIXEL_NAME
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#undef BGR_FORMAT
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