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[78.55.154.8]) by smtp.gmail.com with ESMTPSA id bk4-20020a170906b0c400b008d7a8083dffsm3186414ejb.222.2023.02.27.04.58.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Feb 2023 04:58:06 -0800 (PST) From: Bernhard Beschow To: qemu-devel@nongnu.org Cc: Huacai Chen , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , BALATON Zoltan , Jiaxun Yang , qemu-ppc@nongnu.org, Gerd Hoffmann , Rene Engel Subject: [PATCH v4 2/7] hw/display/sm501: Add fallbacks to pixman routines Date: Mon, 27 Feb 2023 13:57:27 +0100 Message-Id: <20230227125732.20941-3-shentey@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230227125732.20941-1-shentey@gmail.com> References: <20230227125732.20941-1-shentey@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::536; envelope-from=shentey@gmail.com; helo=mail-ed1-x536.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: BALATON Zoltan Pixman may return false if it does not have a suitable implementation. Add fallbacks to handle such cases. Signed-off-by: BALATON Zoltan Reported-by: Rene Engel Tested-by: Rene Engel Message-Id: <20ed9442a0146238254ccc340c0d1efa226c6356.1677445307.git.balaton@eik.bme.hu> --- hw/display/sm501.c | 75 ++++++++++++++++++++++++++++++++-------------- 1 file changed, 52 insertions(+), 23 deletions(-) diff --git a/hw/display/sm501.c b/hw/display/sm501.c index 58bc9701ee..23c4418e19 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -691,7 +691,7 @@ static void sm501_2d_operation(SM501State *s) unsigned int dst_pitch = (s->twoD_pitch >> 16) & 0x1FFF; int crt = (s->dc_crt_control & SM501_DC_CRT_CONTROL_SEL) ? 1 : 0; int fb_len = get_width(s, crt) * get_height(s, crt) * get_bpp(s, crt); - bool overlap = false; + bool overlap = false, fallback = false; if ((s->twoD_stretch >> 16) & 0xF) { qemu_log_mask(LOG_UNIMP, "sm501: only XY addressing is supported.\n"); @@ -834,25 +834,48 @@ static void sm501_2d_operation(SM501State *s) if (tmp_stride * sizeof(uint32_t) * height > sizeof(tmp_buf)) { tmp = g_malloc(tmp_stride * sizeof(uint32_t) * height); } - pixman_blt((uint32_t *)&s->local_mem[src_base], tmp, - src_pitch * bypp / sizeof(uint32_t), - tmp_stride, 8 * bypp, 8 * bypp, - src_x, src_y, 0, 0, width, height); - pixman_blt(tmp, (uint32_t *)&s->local_mem[dst_base], - tmp_stride, - dst_pitch * bypp / sizeof(uint32_t), - 8 * bypp, 8 * bypp, - 0, 0, dst_x, dst_y, width, height); + fallback = !pixman_blt((uint32_t *)&s->local_mem[src_base], + tmp, + src_pitch * bypp / sizeof(uint32_t), + tmp_stride, + 8 * bypp, 8 * bypp, + src_x, src_y, 0, 0, width, height); + if (!fallback) { + fallback = !pixman_blt(tmp, + (uint32_t *)&s->local_mem[dst_base], + tmp_stride, + dst_pitch * bypp / sizeof(uint32_t), + 8 * bypp, 8 * bypp, + 0, 0, dst_x, dst_y, width, height); + } if (tmp != tmp_buf) { g_free(tmp); } } else { - pixman_blt((uint32_t *)&s->local_mem[src_base], - (uint32_t *)&s->local_mem[dst_base], - src_pitch * bypp / sizeof(uint32_t), - dst_pitch * bypp / sizeof(uint32_t), - 8 * bypp, 8 * bypp, - src_x, src_y, dst_x, dst_y, width, height); + fallback = !pixman_blt((uint32_t *)&s->local_mem[src_base], + (uint32_t *)&s->local_mem[dst_base], + src_pitch * bypp / sizeof(uint32_t), + dst_pitch * bypp / sizeof(uint32_t), + 8 * bypp, 8 * bypp, src_x, src_y, + dst_x, dst_y, width, height); + } + if (fallback) { + uint8_t *sp = s->local_mem + src_base; + uint8_t *d = s->local_mem + dst_base; + unsigned int y, i, j; + for (y = 0; y < height; y++) { + if (overlap) { /* overlap also means rtl */ + i = (dst_y + height - 1 - y) * dst_pitch; + i = (dst_x + i) * bypp; + j = (src_y + height - 1 - y) * src_pitch; + j = (src_x + j) * bypp; + memmove(&d[i], &sp[j], width * bypp); + } else { + i = (dst_x + (dst_y + y) * dst_pitch) * bypp; + j = (src_x + (src_y + y) * src_pitch) * bypp; + memcpy(&d[i], &sp[j], width * bypp); + } + } } } break; @@ -867,13 +890,19 @@ static void sm501_2d_operation(SM501State *s) color = cpu_to_le16(color); } - if (width == 1 && height == 1) { - unsigned int i = (dst_x + dst_y * dst_pitch) * bypp; - stn_he_p(&s->local_mem[dst_base + i], bypp, color); - } else { - pixman_fill((uint32_t *)&s->local_mem[dst_base], - dst_pitch * bypp / sizeof(uint32_t), - 8 * bypp, dst_x, dst_y, width, height, color); + if ((width == 1 && height == 1) || + !pixman_fill((uint32_t *)&s->local_mem[dst_base], + dst_pitch * bypp / sizeof(uint32_t), 8 * bypp, + dst_x, dst_y, width, height, color)) { + /* fallback when pixman failed or we don't want to call it */ + uint8_t *d = s->local_mem + dst_base; + unsigned int x, y, i; + for (y = 0; y < height; y++, i += dst_pitch * bypp) { + i = (dst_x + (dst_y + y) * dst_pitch) * bypp; + for (x = 0; x < width; x++, i += bypp) { + stn_he_p(&d[i], bypp, color); + } + } } break; }