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charset="utf-8" ati_2d_blt uses a mixture of locals and direct register access of needed state. This assigns all values derived from register state to local variables. It prepares the function for a larger refactor that removes the dependency on the full device and direct register access entirely. Signed-off-by: Chad Jablonski --- hw/display/ati_2d.c | 102 ++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 46 deletions(-) diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c index f6c65ef3cc..b763a4728d 100644 --- a/hw/display/ati_2d.c +++ b/hw/display/ati_2d.c @@ -66,10 +66,20 @@ void ati_2d_blt(ATIVGAState *s) { /* FIXME it is probably more complex than this and may need to be */ /* rewritten but for now as a start just to get some output: */ - unsigned dst_x =3D (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? - s->regs.dst_x : s->regs.dst_x + 1 - s->regs.dst_widt= h); - unsigned dst_y =3D (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? - s->regs.dst_y : s->regs.dst_y + 1 - s->regs.dst_heig= ht); + bool use_pixman_fill =3D s->use_pixman & BIT(0); + bool use_pixman_blt =3D s->use_pixman & BIT(1); + int rop3 =3D s->regs.dp_mix & GMC_ROP3_MASK; + bool left_to_right =3D s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT; + bool top_to_bottom =3D s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM; + uint32_t frgd_clr =3D s->regs.dp_brush_frgd_clr; + uint8_t *palette =3D s->vga.palette; + unsigned dst_offset =3D s->regs.dst_offset; + unsigned dst_width =3D s->regs.dst_width; + unsigned dst_height =3D s->regs.dst_height; + unsigned dst_x =3D (left_to_right ? + s->regs.dst_x : s->regs.dst_x + 1 - dst_width); + unsigned dst_y =3D (top_to_bottom ? + s->regs.dst_y : s->regs.dst_y + 1 - dst_height); int bpp =3D ati_bpp_from_datatype(s); if (!bpp) { qemu_log_mask(LOG_GUEST_ERROR, "Invalid bpp\n"); @@ -80,7 +90,7 @@ void ati_2d_blt(ATIVGAState *s) qemu_log_mask(LOG_GUEST_ERROR, "Zero dest pitch\n"); return; } - uint8_t *dst_bits =3D s->vga.vram_ptr + s->regs.dst_offset; + uint8_t *dst_bits =3D s->vga.vram_ptr + dst_offset; =20 if (s->dev_id =3D=3D PCI_DEVICE_ID_ATI_RAGE128_PF) { dst_bits +=3D s->regs.crtc_offset & 0x07ffffff; @@ -90,25 +100,25 @@ void ati_2d_blt(ATIVGAState *s) uint8_t *end =3D s->vga.vram_ptr + s->vga.vram_size; if (dst_x > 0x3fff || dst_y > 0x3fff || dst_bits >=3D end || dst_bits + dst_x - + (dst_y + s->regs.dst_height) * dst_stride >=3D end) { + + (dst_y + dst_height) * dst_stride >=3D end) { qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); return; } DPRINTF("%d %d %d, %d %d %d, (%d,%d) -> (%d,%d) %dx%d %c %c\n", - s->regs.src_offset, s->regs.dst_offset, s->regs.default_offset, - s->regs.src_pitch, s->regs.dst_pitch, s->regs.default_pitch, + s->regs.src_offset, dst_offset, s->regs.default_offset, + s->regs.src_pitch, dst_stride, s->regs.default_pitch, s->regs.src_x, s->regs.src_y, dst_x, dst_y, - s->regs.dst_width, s->regs.dst_height, - (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? '>' : '<'), - (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? 'v' : '^')); - switch (s->regs.dp_mix & GMC_ROP3_MASK) { + dst_width, dst_height, + (left_to_right ? '>' : '<'), + (top_to_bottom ? 'v' : '^')); + switch (rop3) { case ROP3_SRCCOPY: { bool fallback =3D false; - unsigned src_x =3D (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? - s->regs.src_x : s->regs.src_x + 1 - s->regs.dst_wid= th); - unsigned src_y =3D (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? - s->regs.src_y : s->regs.src_y + 1 - s->regs.dst_hei= ght); + unsigned src_x =3D (left_to_right ? + s->regs.src_x : s->regs.src_x + 1 - dst_width); + unsigned src_y =3D (top_to_bottom ? + s->regs.src_y : s->regs.src_y + 1 - dst_height); int src_stride =3D s->regs.src_pitch; if (!src_stride) { qemu_log_mask(LOG_GUEST_ERROR, "Zero source pitch\n"); @@ -123,7 +133,7 @@ void ati_2d_blt(ATIVGAState *s) int src_stride_words =3D src_stride / sizeof(uint32_t); if (src_x > 0x3fff || src_y > 0x3fff || src_bits >=3D end || src_bits + src_x - + (src_y + s->regs.dst_height) * src_stride >=3D end) { + + (src_y + dst_height) * src_stride >=3D end) { qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); return; } @@ -132,33 +142,31 @@ void ati_2d_blt(ATIVGAState *s) src_bits, dst_bits, src_stride_words, dst_stride_words, bpp, bpp, src_x, src_y, dst_x, dst_y, - s->regs.dst_width, s->regs.dst_height); + dst_width, dst_height); #ifdef CONFIG_PIXMAN - if ((s->use_pixman & BIT(1)) && - s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT && - s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM) { + if (use_pixman_blt && left_to_right && top_to_bottom) { fallback =3D !pixman_blt((uint32_t *)src_bits, (uint32_t *)dst= _bits, src_stride_words, dst_stride_words, bpp, bpp, src_x, src_y, dst_x, dst_y, - s->regs.dst_width, s->regs.dst_height); - } else if (s->use_pixman & BIT(1)) { + dst_width, dst_height); + } else if (use_pixman_blt) { /* FIXME: We only really need a temporary if src and dst overl= ap */ - int llb =3D s->regs.dst_width * (bpp / 8); + int llb =3D dst_width * (bpp / 8); int tmp_stride =3D DIV_ROUND_UP(llb, sizeof(uint32_t)); uint32_t *tmp =3D g_malloc(tmp_stride * sizeof(uint32_t) * - s->regs.dst_height); + dst_height); fallback =3D !pixman_blt((uint32_t *)src_bits, tmp, src_stride_words, tmp_stride, bpp, bpp, src_x, src_y, 0, 0, - s->regs.dst_width, s->regs.dst_height); + dst_width, dst_height); if (!fallback) { fallback =3D !pixman_blt(tmp, (uint32_t *)dst_bits, tmp_stride, dst_stride_words, bpp, bpp, 0, 0, dst_x, dst_y, - s->regs.dst_width, s->regs.dst_heig= ht); + dst_width, dst_height); } g_free(tmp); } else @@ -168,19 +176,20 @@ void ati_2d_blt(ATIVGAState *s) } if (fallback) { unsigned int y, i, j, bypp =3D bpp / 8; - for (y =3D 0; y < s->regs.dst_height; y++) { + for (y =3D 0; y < dst_height; y++) { i =3D dst_x * bypp; j =3D src_x * bypp; - if (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM) { + if (top_to_bottom) { i +=3D (dst_y + y) * dst_stride; j +=3D (src_y + y) * src_stride; } else { - i +=3D (dst_y + s->regs.dst_height - 1 - y) + i +=3D (dst_y + dst_height - 1 - y) * dst_stride; - j +=3D (src_y + s->regs.dst_height - 1 - y) + j +=3D (src_y + dst_height - 1 - y) * src_stride; } - memmove(&dst_bits[i], &src_bits[j], s->regs.dst_width * by= pp); + memmove(&dst_bits[i], &src_bits[j], + dst_width * bypp); } } break; @@ -191,36 +200,38 @@ void ati_2d_blt(ATIVGAState *s) { uint32_t filler =3D 0; =20 - switch (s->regs.dp_mix & GMC_ROP3_MASK) { + switch (rop3) { case ROP3_PATCOPY: - filler =3D s->regs.dp_brush_frgd_clr; + filler =3D frgd_clr; break; case ROP3_BLACKNESS: - filler =3D 0xffUL << 24 | rgb_to_pixel32(s->vga.palette[0], - s->vga.palette[1], s->vga.palette[2]); + filler =3D 0xffUL << 24 | rgb_to_pixel32(palette[0], + palette[1], + palette[2]); break; case ROP3_WHITENESS: - filler =3D 0xffUL << 24 | rgb_to_pixel32(s->vga.palette[3], - s->vga.palette[4], s->vga.palette[5]); + filler =3D 0xffUL << 24 | rgb_to_pixel32(palette[3], + palette[4], + palette[5]); break; } =20 DPRINTF("pixman_fill(%p, %d, %d, %d, %d, %d, %d, %x)\n", dst_bits, dst_stride_words, bpp, dst_x, dst_y, - s->regs.dst_width, s->regs.dst_height, filler); + dst_width, dst_height, filler); #ifdef CONFIG_PIXMAN - if (!(s->use_pixman & BIT(0)) || + if (!use_pixman_fill || !pixman_fill((uint32_t *)dst_bits, dst_stride_words, bpp, dst_x, dst_y, - s->regs.dst_width, s->regs.dst_height, filler)) + dst_width, dst_height, filler)) #endif { /* fallback when pixman failed or we don't want to call it */ unsigned int x, y, i, bypp =3D bpp / 8; - for (y =3D 0; y < s->regs.dst_height; y++) { + for (y =3D 0; y < dst_height; y++) { i =3D dst_x * bypp + (dst_y + y) * dst_stride; - for (x =3D 0; x < s->regs.dst_width; x++, i +=3D bypp) { + for (x =3D 0; x < dst_width; x++, i +=3D bypp) { stn_he_p(&dst_bits[i], bypp, filler); } } @@ -229,10 +240,9 @@ void ati_2d_blt(ATIVGAState *s) } default: qemu_log_mask(LOG_UNIMP, "Unimplemented ati_2d blt op %x\n", - (s->regs.dp_mix & GMC_ROP3_MASK) >> 16); + rop3 >> 16); return; } =20 - ati_set_dirty(s, dst_bits, dst_y, s->regs.dst_height, - (s->regs.dp_mix & GMC_ROP3_MASK)); + ati_set_dirty(s, dst_bits, dst_y, dst_height, rop3); } --=20 2.52.0