Added Voodoo depth biasing.

2016-04-08 21:40:15 +01:00 · 2016-04-08 21:40:15 +01:00 · 74786231c5
commit 74786231c5
parent 14df80109b
3 changed files with 24 additions and 1 deletions
--- a/src/vid_voodoo_codegen_x86.h
+++ b/src/vid_voodoo_codegen_x86.h
@ -212,6 +212,15 @@ static inline void voodoo_generate(uint8_t *code_block, voodoo_t *voodoo, voodoo
                addbyte(0x47);
                addbyte(0xc3);
        }
+        
+        if (params->fbzMode & FBZ_DEPTH_BIAS)
+        {
+                addbyte(0x03); /*ADD EAX, params->zaColor[ESI]*/
+                addbyte(0x86);
+                addlong(offsetof(voodoo_params_t, zaColor));                
+                addbyte(0x25); /*AND EAX, 0xffff*/
+                addlong(0xffff);
+        }

        addbyte(0x89); /*MOV state->new_depth[EDI], EAX*/
        addbyte(0x87);