generic hardware cursor support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@903 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 68 insertions, 0 deletions

diff --git a/hw/vga_template.h b/hw/vga_template.h
index 766257c..721abcb 100644
--- a/hw/vga_template.h
+++ b/hw/vga_template.h
@@ -434,6 +434,74 @@ static void glue(vga_draw_line32_, DEPTH)(VGAState *s1, uint8_t *d,
 #endif
 }
 
+#if DEPTH != 15
+void glue(vga_draw_cursor_line_, DEPTH)(uint8_t *d1, 
+                                        const uint8_t *src1, 
+                                        int poffset, int w,
+                                        unsigned int color0, 
+                                        unsigned int color1,
+                                        unsigned int color_xor)
+{
+    const uint8_t *plane0, *plane1;
+    int x, b0, b1;
+    uint8_t *d;
+
+    d = d1;
+    plane0 = src1;
+    plane1 = src1 + poffset;
+    for(x = 0; x < w; x++) {
+        b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
+        b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
+#if DEPTH == 8
+        switch(b0 | (b1 << 1)) {
+        case 0:
+            break;
+        case 1:
+            d[0] ^= color_xor;
+            break;
+        case 2:
+            d[0] = color0;
+            break;
+        case 3:
+            d[0] = color1;
+            break;
+        }
+#elif DEPTH == 16
+        switch(b0 | (b1 << 1)) {
+        case 0:
+            break;
+        case 1:
+            ((uint16_t *)d)[0] ^= color_xor;
+            break;
+        case 2:
+            ((uint16_t *)d)[0] = color0;
+            break;
+        case 3:
+            ((uint16_t *)d)[0] = color1;
+            break;
+        }
+#elif DEPTH == 32
+        switch(b0 | (b1 << 1)) {
+        case 0:
+            break;
+        case 1:
+            ((uint32_t *)d)[0] ^= color_xor;
+            break;
+        case 2:
+            ((uint32_t *)d)[0] = color0;
+            break;
+        case 3:
+            ((uint32_t *)d)[0] = color1;
+            break;
+        }
+#else
+#error unsupported depth
+#endif
+        d += (DEPTH / 8);
+    }
+}
+#endif
+
 #undef PUT_PIXEL2
 #undef DEPTH
 #undef BPP