Properly input stencil info contributed by Wladimir.

5 files changed, 92 insertions, 62 deletions

diff --git a/src/mesa/drivers/dri/r300/r300_cmdbuf.c b/src/mesa/drivers/dri/r300/r300_cmdbuf.c
index bf018daeb7..586abdec4f 100644
--- a/src/mesa/drivers/dri/r300/r300_cmdbuf.c
+++ b/src/mesa/drivers/dri/r300/r300_cmdbuf.c
@@ -385,7 +385,7 @@ void r300InitCmdBuf(r300ContextPtr r300)
 	ALLOC_STATE( unk4BC8, always, 4, "unk4BC8", 0 );
 		r300->hw.unk4BC8.cmd[0] = cmducs(0x4BC8, 3);
 	ALLOC_STATE( at, always, R300_AT_CMDSIZE, "at", 0 );
-		r300->hw.at.cmd[R300_AT_CMD_0] = cmducs(R300_PP_ALPHA_TEST, 1);
+		r300->hw.at.cmd[R300_AT_CMD_0] = cmducs(R300_PP_ALPHA_TEST, 2);
 	ALLOC_STATE( unk4BD8, always, 2, "unk4BD8", 0 );
 		r300->hw.unk4BD8.cmd[0] = cmducs(0x4BD8, 1);
 	ALLOC_STATE( fpp, variable, R300_FPP_CMDSIZE, "fpp", 0 );
diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h
index f0a186d396..068fdfcdca 100644
--- a/src/mesa/drivers/dri/r300/r300_context.h
+++ b/src/mesa/drivers/dri/r300/r300_context.h
@@ -309,7 +309,8 @@ struct r300_state_atom {
 
 #define R300_AT_CMD_0		0
 #define R300_AT_ALPHA_TEST	1
-#define R300_AT_CMDSIZE		2
+#define R300_AT_UNKNOWN		2
+#define R300_AT_CMDSIZE		3
 
 #define R300_BLD_CMD_0		0
 #define R300_BLD_CBLEND		1
diff --git a/src/mesa/drivers/dri/r300/r300_ioctl.c b/src/mesa/drivers/dri/r300/r300_ioctl.c
index 16528e0100..2bf70783f9 100644
--- a/src/mesa/drivers/dri/r300/r300_ioctl.c
+++ b/src/mesa/drivers/dri/r300/r300_ioctl.c
@@ -90,8 +90,8 @@ static void r300ClearBuffer(r300ContextPtr r300, int flags, int buffer)
 	r300->hw.vir[1].cmd[1] = 0xF688F688;
 
 	R300_STATECHANGE(r300, vic);
-	r300->hw.vic.cmd[R300_VIR_CNTL_0] = 0x00000001;
-	r300->hw.vic.cmd[R300_VIR_CNTL_1] = 0x00000405;
+	r300->hw.vic.cmd[R300_VIC_CNTL_0] = 0x00000001;
+	r300->hw.vic.cmd[R300_VIC_CNTL_1] = 0x00000405;
 	
 	R300_STATECHANGE(r300, vof);
 	r300->hw.vof.cmd[R300_VOF_CNTL_0] = R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index d07eb75a01..083ba9b1b6 100644
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -1049,6 +1049,7 @@ I am fairly certain that they are correct unless stated otherwise in comments.
 #       define R300_COLOR_ENDIAN_WORD_SWAP       (1 << 18) /* GUESS */
 #       define R300_COLOR_ENDIAN_DWORD_SWAP      (2 << 18) /* GUESS */
 #       define R300_COLOR_UNKNOWN_22_23          (3 << 22) /* GUESS: Format? */
+		/* if format then it is (6<<21) - RGBA8 */
 #define R300_RB3D_COLORPITCH1               0x4E3C /* GUESS */
 #define R300_RB3D_COLORPITCH2               0x4E40 /* GUESS */
 #define R300_RB3D_COLORPITCH3               0x4E44 /* GUESS */
@@ -1071,7 +1072,12 @@ I am fairly certain that they are correct unless stated otherwise in comments.
 #       define R300_RB3D_Z_WRITE_ONLY        	 0x00000006
 #	define R300_STENCIL_ENABLE		 0x00000000  /* UNKNOWN yet.. */
 
-#define R300_RB3D_ZSTENCILCNTL_1                   0x4F04
+#       define R300_RB3D_Z_TEST                  0x00000012
+#       define R300_RB3D_Z_TEST_AND_WRITE        0x00000016
+#       define R300_RB3D_Z_WRITE_ONLY        	 0x00000006
+#	define R300_STENCIL_ENABLE		 (0<<1)  /* UNKNOWN yet.. */
+
+#define R300_RB3D_ZSTENCIL_CNTL_1                   0x4F04
 		/* functions */
 #	define R300_ZS_NEVER			0
 #	define R300_ZS_LESS			1
@@ -1094,14 +1100,17 @@ I am fairly certain that they are correct unless stated otherwise in comments.
 
 
 #	define	R300_RB3D_ZS1_DEPTH_FUNC_SHIFT		0
+	/* front and back refer to operations done for front
+	   and back faces - newer Radeons can perform different
+	   functions */
 #	define	R300_RB3D_ZS1_FRONT_FUNC_SHIFT		3
 #	define	R300_RB3D_ZS1_FRONT_FAIL_OP_SHIFT	6
 #	define	R300_RB3D_ZS1_FRONT_ZPASS_OP_SHIFT	9
 #	define	R300_RB3D_ZS1_FRONT_ZFAIL_OP_SHIFT	12
-#	define	R300_RB3D_ZS1_STENCIL_FUNC_SHIFT	15
-#	define	R300_RB3D_ZS1_STENCIL_FAIL_OP_SHIFT	18
-#	define	R300_RB3D_ZS1_STENCIL_ZPASS_OP_SHIFT	21
-#	define	R300_RB3D_ZS1_STENCIL_ZFAIL_OP_SHIFT	24
+#	define	R300_RB3D_ZS1_BACK_FUNC_SHIFT		15
+#	define	R300_RB3D_ZS1_BACK_FAIL_OP_SHIFT	18
+#	define	R300_RB3D_ZS1_BACK_ZPASS_OP_SHIFT	21
+#	define	R300_RB3D_ZS1_BACK_ZFAIL_OP_SHIFT	24
 
 
 
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index cc6328b240..048f62572c 100644
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -472,11 +472,22 @@ static void r300Enable(GLcontext* ctx, GLenum cap, GLboolean state)
 		break;
 	
 	case GL_STENCIL_TEST:
+	
+		{
+		static int stencil=1;
+		if(stencil){
+			fprintf(stderr, "%s:%s - do not know how to enable stencil. Help me !\n",
+				__FILE__, __FUNCTION__);
+			stencil=0;
+			}
+		}
+		
 		if (r300->state.hw_stencil) {
+			//fprintf(stderr, "Stencil %s\n", state ? "enabled" : "disabled");
 			R300_STATECHANGE(r300, zs);
 			if (state) {
 				r300->hw.zs.cmd[R300_ZS_CNTL_0] |=
-				    R300_STENCIL_ENABLE;
+				    R300_STENCIL_ENABLE;				  
 			} else {
 				r300->hw.zs.cmd[R300_ZS_CNTL_0] &=
 				    ~R300_STENCIL_ENABLE;
@@ -614,68 +625,38 @@ static void r300PointSize(GLcontext * ctx, GLfloat size)
  * Stencil
  */
 
-static void r300StencilFunc(GLcontext * ctx, GLenum func,
-			    GLint ref, GLuint mask)
-{
-	r300ContextPtr rmesa = R300_CONTEXT(ctx);
-	GLuint refmask = ((ctx->Stencil.Ref[0] << R300_RB3D_ZS2_STENCIL_REF_SHIFT) |
-			  (ctx->Stencil.
-			   ValueMask[0] << R300_RB3D_ZS2_STENCIL_MASK_SHIFT));
-
-	R200_STATECHANGE(rmesa, zs);
-
-	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] &= ~(R300_ZS_MASK << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT);
-	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] &=  ~((R300_ZS_MASK << R300_RB3D_ZS2_STENCIL_REF_SHIFT) |
-						(R300_ZS_MASK << R300_RB3D_ZS2_STENCIL_MASK_SHIFT));
-
-	switch (ctx->Stencil.Function[0]) {
+ static int translate_stencil_func(int func)
+ {
+	switch (func) {
 	case GL_NEVER:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_NEVER << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_NEVER;
 		break;
 	case GL_LESS:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_LESS << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_LESS;
 		break;
 	case GL_EQUAL:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_EQUAL << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_EQUAL;
 		break;
 	case GL_LEQUAL:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_LEQUAL << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_LEQUAL;
 		break;
 	case GL_GREATER:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_GREATER << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_GREATER;
 		break;
 	case GL_NOTEQUAL:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_NOTEQUAL << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_NOTEQUAL;
 		break;
 	case GL_GEQUAL:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_GEQUAL << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_GEQUAL;
 		break;
 	case GL_ALWAYS:
-		rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |=
-		    R300_ZS_ALWAYS << R300_RB3D_ZS1_STENCIL_FUNC_SHIFT;
+		    return R300_ZS_ALWAYS;
 		break;
 	}
-
-	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] |= refmask;
-}
-
-static void r300StencilMask(GLcontext * ctx, GLuint mask)
-{
-	r300ContextPtr rmesa = R300_CONTEXT(ctx);
-
-	R200_STATECHANGE(rmesa, zs);
-	rmesa->hw.zs.cmd[R300_ZS_CNTL_2]  &= ~(R300_ZS_MASK << R300_RB3D_ZS2_STENCIL_WRITE_MASK_SHIFT);
-	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] |= ctx->Stencil.WriteMask[0] << R300_RB3D_ZS2_STENCIL_WRITE_MASK_SHIFT;
-}
-
-static int translate_stencil_op(int op)
+ return 0;
+ }
+ 
+ static int translate_stencil_op(int op)
 {
 	switch (op) {
 	case GL_KEEP:
@@ -697,21 +678,56 @@ static int translate_stencil_op(int op)
 	}
 }
 
+static void r300StencilFunc(GLcontext * ctx, GLenum func,
+			    GLint ref, GLuint mask)
+{
+	r300ContextPtr rmesa = R300_CONTEXT(ctx);
+	GLuint refmask = ((ctx->Stencil.Ref[0] << R300_RB3D_ZS2_STENCIL_REF_SHIFT) |
+			  (ctx->Stencil.
+			   ValueMask[0] << R300_RB3D_ZS2_STENCIL_MASK_SHIFT));
+	GLuint func;
+
+	R200_STATECHANGE(rmesa, zs);
+
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] &= ~(
+		(R300_ZS_MASK << R300_RB3D_ZS1_FRONT_FUNC_SHIFT)
+		| (R300_ZS_MASK << R300_RB3D_ZS1_BACK_FUNC_SHIFT));
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] &=  ~((R300_ZS_MASK << R300_RB3D_ZS2_STENCIL_REF_SHIFT) |
+						(R300_ZS_MASK << R300_RB3D_ZS2_STENCIL_MASK_SHIFT));
+
+	func = translate_stencil_func(ctx->Stencil.Function[0]);
+	
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= (func << R300_RB3D_ZS1_FRONT_FUNC_SHIFT) 
+					  | (func << R300_RB3D_ZS1_BACK_FUNC_SHIFT);
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] |= refmask;
+}
+
+static void r300StencilMask(GLcontext * ctx, GLuint mask)
+{
+	r300ContextPtr rmesa = R300_CONTEXT(ctx);
+
+	R200_STATECHANGE(rmesa, zs);
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_2]  &= ~(R300_ZS_MASK << R300_RB3D_ZS2_STENCIL_WRITE_MASK_SHIFT);
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] |= ctx->Stencil.WriteMask[0] << R300_RB3D_ZS2_STENCIL_WRITE_MASK_SHIFT;
+}
+
+
 static void r300StencilOp(GLcontext * ctx, GLenum fail,
 			  GLenum zfail, GLenum zpass)
 {
 	r300ContextPtr rmesa = R300_CONTEXT(ctx);
 
 	R200_STATECHANGE(rmesa, zs);
-	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] &= ~((R300_ZS_MASK << R300_RB3D_ZS1_STENCIL_FAIL_OP_SHIFT)
-					| (R300_ZS_MASK << R300_RB3D_ZS1_STENCIL_ZPASS_OP_SHIFT)
-					| (R300_ZS_MASK << R300_RB3D_ZS1_STENCIL_ZFAIL_OP_SHIFT)
-					);
+		/* It is easier to mask what's left.. */
+	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] &= (R300_ZS_MASK << R300_RB3D_ZS1_DEPTH_FUNC_SHIFT);
 
 	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] |= 
-		 (translate_stencil_op(ctx->Stencil.FailFunc[0]) << R300_RB3D_ZS1_STENCIL_FAIL_OP_SHIFT)
-		|(translate_stencil_op(ctx->Stencil.ZFailFunc[0]) << R300_RB3D_ZS1_STENCIL_ZFAIL_OP_SHIFT)
-		|(translate_stencil_op(ctx->Stencil.ZPassFunc[0]) << R300_RB3D_ZS1_STENCIL_ZPASS_OP_SHIFT);
+		 (translate_stencil_op(ctx->Stencil.FailFunc[0]) << R300_RB3D_ZS1_FRONT_FAIL_OP_SHIFT)
+		|(translate_stencil_op(ctx->Stencil.ZFailFunc[0]) << R300_RB3D_ZS1_FRONT_ZFAIL_OP_SHIFT)
+		|(translate_stencil_op(ctx->Stencil.ZPassFunc[0]) << R300_RB3D_ZS1_FRONT_ZPASS_OP_SHIFT)
+		|(translate_stencil_op(ctx->Stencil.FailFunc[0]) << R300_RB3D_ZS1_BACK_FAIL_OP_SHIFT)
+		|(translate_stencil_op(ctx->Stencil.ZFailFunc[0]) << R300_RB3D_ZS1_BACK_ZFAIL_OP_SHIFT)
+		|(translate_stencil_op(ctx->Stencil.ZPassFunc[0]) << R300_RB3D_ZS1_BACK_ZPASS_OP_SHIFT);
 	
 }
 
@@ -1689,6 +1705,7 @@ void r300ResetHwState(r300ContextPtr r300)
 	r300->hw.at.cmd[R300_AT_ALPHA_TEST] = 0;
 	#endif
 
+	r300->hw.at.cmd[R300_AT_UNKNOWN] = 0;
 	r300->hw.unk4BD8.cmd[1] = 0;
 
 	r300->hw.unk4E00.cmd[1] = 0;
@@ -1728,6 +1745,9 @@ void r300ResetHwState(r300ContextPtr r300)
 	r300->hw.unk4F10.cmd[3] = 0x00000003;
 	r300->hw.unk4F10.cmd[4] = 0x00000000;
 
+	/* experiment a bit */
+	r300->hw.unk4F10.cmd[2] = 0x00000001; // depthbuffer format?
+
 	r300->hw.zb.cmd[R300_ZB_OFFSET] =
 		r300->radeon.radeonScreen->depthOffset +
 		r300->radeon.radeonScreen->fbLocation;