updated 3D related colorspace settings to be optimal speed wise. Also removed redundant stuff not having any effect with the current engine setup. 3D rendering speed stays same on RGB15 and 16, but RGB32 space just gained about 11% gain :)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16321 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c

@@ -429,7 +429,7 @@ status_t nv_acc_init_dma()
 			ACCW(PR_CTX0_7, 0x0300a054); /* NVclass $054, patchcfg ROP_AND, userclip enable,
 										  * context surface0 valid */
 		}
-		ACCW(PR_CTX1_7, 0x00000d01); /* format is A8RGB24, MSB mono */
+		ACCW(PR_CTX1_7, 0x00000000); /* colorspace not set, notify instance invalid (b16-31) */
 		ACCW(PR_CTX2_7, 0x11401140); /* DMA0, DMA1 instance = $1140 */
 		ACCW(PR_CTX3_7, 0x00000000); /* method traps disabled */
 		/* setup set '8' ... */
@@ -445,7 +445,7 @@ status_t nv_acc_init_dma()
 			ACCW(PR_CTX0_8, 0x0300a055); /* NVclass $055, patchcfg ROP_AND, userclip enable,
 										  * context surface0 valid */
 		}
-		ACCW(PR_CTX1_8, 0x00000d01); /* format is A8RGB24, MSB mono */
+		ACCW(PR_CTX1_8, 0x00000000); /* colorspace not set, notify instance invalid (b16-31) */
 		ACCW(PR_CTX2_8, 0x11401140); /* DMA0, DMA1 instance = $1140 */
 		ACCW(PR_CTX3_8, 0x00000000); /* method traps disabled */
 		/* setup set '9' for cmd NV_SCALED_IMAGE_FROM_MEMORY */
@@ -481,89 +481,50 @@ status_t nv_acc_init_dma()
 									  * table is located in main system RAM (b12-31):
 									  * It's adress needs to be at a 4kb boundary! */
 
-//3D stuff:
+		/* set the 3D rendering functions colordepth via BPIXEL's 'depth 2' */
-/*
+		/* note:
-	rud's (temp.) notes:
+		 * setting a depth to 'invalid' (zero) makes the engine report
-	(problem: 3D driver renders in 32bit whatever the frontbuffer space in DMA mode.)
+		 * ready with drawing 'immediately'. */
-	- the colorspace dependant info under 'acc engine' also sets the outcome for the
+		//fixme: NV30A and above (probably) needs to be corrected...
-	  3D add-on. I don't know yet if the 3D render funcs render in the frontbuffer
-	  space and the back-to-front blit isn't set (stays in 32bit!) (likely),
-	  or if the 3D funcs render always in 32bit space and back-to-front blit color-
-	  space converts... I'll try to nail this down at some point.
-	- the colorspace dependant info under 'pramin' is needed to get the 3D related
-	  surface commands up and running. An alternate solution would probably be calling
-	  the surface command with the colorspace set.
-*/
 		switch(si->dm.space)
 		{
 		case B_CMAP8:
-			/* acc engine */
-			ACCW(FORMATS, 0x00001010);
 			if (si->ps.card_arch < NV30A)
-				/* set depth 0-5: $1 = Y8 */
+				/* set depth 2: $1 = Y8 */
-				ACCW(BPIXEL, 0x00111111);
+				ACCW(BPIXEL, 0x00000100);
 			else
 				/* set depth 0-1: $1 = Y8, $2 = X1R5G5B5_Z1R5G5B5 */
 				ACCW(BPIXEL, 0x00000021);
-			ACCW(STRD_FMT, 0x03020202);
-			/* PRAMIN */
-			if (si->ps.card_arch == NV04A)
-				ACCW(PR_CTX1_6, 0x00000302); /* format is X24Y8, LSB mono */
-			else
-				ACCW(PR_CTX1_6, 0x00000000); /* format is invalid */
-			ACCW(PR_CTX1_A, 0x00000302); /* format is X24Y8, LSB mono */
 			break;
 		case B_RGB15_LITTLE:
-			/* acc engine */
-			ACCW(FORMATS, 0x00002071);
 			if (si->ps.card_arch < NV30A)
-				/* set depth 0-5: $2 = X1R5G5B5_Z1R5G5B5, $6 = Y16 */
+				/* set depth 2: $4 = A1R5G5B5 */
-				ACCW(BPIXEL, 0x00226222);
+				ACCW(BPIXEL, 0x00000400);
 			else
 				/* set depth 0-1: $2 = X1R5G5B5_Z1R5G5B5, $4 = A1R5G5B5 */
 				ACCW(BPIXEL, 0x00000042);
-			ACCW(STRD_FMT, 0x09080808);
-			/* PRAMIN */
-			ACCW(PR_CTX1_6, 0x00000902); /* format is X17RGB15, LSB mono */
-			ACCW(PR_CTX1_A, 0x00000902); /* format is X17RGB15, LSB mono */
 			break;
 		case B_RGB16_LITTLE:
-			/* acc engine */
-			ACCW(FORMATS, 0x000050C2);
 			if (si->ps.card_arch < NV30A)
-				/* set depth 0-5: $5 = R5G6B5, $6 = Y16 */
+				/* set depth 2: $5 = R5G6B5 */
-				ACCW(BPIXEL, 0x00556555);
+				ACCW(BPIXEL, 0x00000500);
 			else
 				/* set depth 0-1: $5 = R5G6B5, $a = X1A7R8G8B8_O1A7R8G8B8 */
 				ACCW(BPIXEL, 0x000000a5);
-			if (si->ps.card_arch == NV04A)
-				ACCW(STRD_FMT, 0x0c0b0b0b);
-			else
-				ACCW(STRD_FMT, 0x000b0b0c);
-			/* PRAMIN */
-			ACCW(PR_CTX1_6, 0x00000c02); /* format is X16RGB16, LSB mono */
-			ACCW(PR_CTX1_A, 0x00000c02); /* format is X16RGB16, LSB mono */
 			break;
 		case B_RGB32_LITTLE:
 		case B_RGBA32_LITTLE:
-			/* acc engine */
-			ACCW(FORMATS, 0x000070e5);
 			if (si->ps.card_arch < NV30A)
-				/* set depth 0-5: $7 = X8R8G8B8_Z8R8G8B8, $d = Y32 */
+				/* set depth 2: $c = A8R8G8B8 */
-				ACCW(BPIXEL, 0x0077d777);
+				ACCW(BPIXEL, 0x00000c00);
 			else
 				/* set depth 0-1: $7 = X8R8G8B8_Z8R8G8B8, $e = V8YB8U8YA8 */
 				ACCW(BPIXEL, 0x000000e7);
-			ACCW(STRD_FMT, 0x0e0d0d0d);
-			/* PRAMIN */
-			ACCW(PR_CTX1_6, 0x00000e02); /* format is X8RGB24, LSB mono */
-			ACCW(PR_CTX1_A, 0x00000e02); /* format is X8RGB24, LSB mono */
 			break;
 		default:
 			LOG(8,("ACC: init, invalid bit depth\n"));
 			return B_ERROR;
 		}
-//end 3D stuff.
 	}
 
 	if (si->ps.card_arch == NV04A)