Adding support for front buffer mode, removing some code we dont really need and some new debugging stuff.

3 files changed, 74 insertions, 79 deletions

diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
index 9466504cfc..ca9ee7c1ca 100644
--- a/src/mesa/drivers/dri/r300/r300_context.c
+++ b/src/mesa/drivers/dri/r300/r300_context.c
@@ -217,9 +217,7 @@ GLboolean r300CreateContext(const __GLcontextModes * glVisual,
 	 */
 
 	ctx = r300->radeon.glCtx;
-	if(ctx->Visual.doubleBufferMode == 0){
-		fprintf(stderr, "Help me! Single buffer mode doesnt work yet.\n");
-	}
+	
 	ctx->Const.MaxTextureImageUnits = driQueryOptioni(&r300->radeon.optionCache,
 						     "texture_image_units");
 	ctx->Const.MaxTextureCoordUnits = driQueryOptioni(&r300->radeon.optionCache,
diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c
index 771459a2ab..261886ebc4 100644
--- a/src/mesa/drivers/dri/r300/r300_render.c
+++ b/src/mesa/drivers/dri/r300/r300_render.c
@@ -58,62 +58,6 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "r300_maos.h"
 #include "r300_emit.h"
 
-/* Turns out we might not need this after all... */
-void update_zbias(GLcontext * ctx, int prim)
-{
-    r300ContextPtr rmesa = R300_CONTEXT(ctx);
-    int enabled = 0;
-    uint32_t values[4];
-    //return ;
-    switch(prim & PRIM_MODE_MASK) {
-	case GL_POINTS:
-		if(ctx->Polygon.OffsetPoint == GL_TRUE)
-			enabled=1;
-      		break;
-	case GL_LINES:
-	case GL_LINE_STRIP:
-	case GL_LINE_LOOP:
-		if(ctx->Polygon.OffsetLine == GL_TRUE)
-			enabled=1;
-      		break;
-    	case GL_TRIANGLES:
-   	case GL_TRIANGLE_STRIP:
-   	case GL_TRIANGLE_FAN:
-	case GL_QUADS:
-	case GL_QUAD_STRIP:
-	case GL_POLYGON:
-		if(ctx->Polygon.OffsetFill == GL_TRUE)
-			enabled=1;
-		break;
-   	default:
- 		fprintf(stderr, "%s:%s Do not know how to handle primitive %02x - help me !\n",
-			__FILE__, __FUNCTION__,
-			prim & PRIM_MODE_MASK);
-
-    }
-
-    if(enabled){
-	    values[0]=values[2]=r300PackFloat32(ctx->Polygon.OffsetFactor * 12.0);
-	    values[1]=values[3]=r300PackFloat32(ctx->Polygon.OffsetUnits * 4.0);
-    }else{
-	    values[0]=values[2]=r300PackFloat32(0.0);
-	    values[1]=values[3]=r300PackFloat32(0.0);
-    }
-
-    if(values[0] != rmesa->hw.zbs.cmd[R300_ZBS_T_FACTOR] ||
-       values[1] != rmesa->hw.zbs.cmd[R300_ZBS_T_CONSTANT] ||
-       values[2] != rmesa->hw.zbs.cmd[R300_ZBS_W_FACTOR] ||
-       values[3] != rmesa->hw.zbs.cmd[R300_ZBS_W_CONSTANT]){
-
-              R300_STATECHANGE(rmesa, zbs);
-              rmesa->hw.zbs.cmd[R300_ZBS_T_FACTOR] = values[0];
-              rmesa->hw.zbs.cmd[R300_ZBS_T_CONSTANT] = values[1];
-              rmesa->hw.zbs.cmd[R300_ZBS_W_FACTOR] = values[2];
-              rmesa->hw.zbs.cmd[R300_ZBS_W_CONSTANT] = values[3];
-
-    }
-}
-
 /**********************************************************************
 *                     Hardware rasterization
 *
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index 3646507c3f..b47957054d 100644
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -1796,8 +1796,53 @@ static void r300InvalidateState(GLcontext * ctx, GLuint new_state)
 	r300ResetHwState(r300);
 }
 
-void update_zbias(GLcontext * ctx, int prim);
-
+/* Checks that r300ResetHwState actually modifies all states.
+   Should probably be burried in somewhere else as this file is getting longish. */
+void verify_r300ResetHwState(r300ContextPtr r300, int stage)
+{
+	struct r300_state_atom* atom;
+	int i;
+	drm_r300_cmd_header_t cmd;
+	
+	if(stage){ /* mess around with states */
+		unsigned long fp1, cb1;
+	
+		fp1=r300->hw.fp.cmd[R300_FP_CMD_1]; /* some special cases... */
+		cb1=r300->hw.cb.cmd[R300_CB_CMD_1];
+	
+		fprintf(stderr, "verify begin:\n");
+	
+		foreach(atom, &r300->hw.atomlist) {
+			for(i=1; i < (*atom->check)(r300, atom); i++)
+				atom->cmd[i]=0xdeadbeef;
+		}	
+		r300->hw.fp.cmd[R300_FP_CMD_1]=fp1;
+		r300->hw.cb.cmd[R300_CB_CMD_1]=cb1;
+			
+		foreach(atom, &r300->hw.atomlist) {
+			cmd.u=atom->cmd[0];
+			switch(cmd.header.cmd_type){
+			case R300_CMD_UNCHECKED_STATE:
+			case R300_CMD_VPU:
+			case R300_CMD_PACKET3:
+			case R300_CMD_END3D:
+			case R300_CMD_CP_DELAY:
+			case R300_CMD_DMA_DISCARD:
+				break;
+			default: fprintf(stderr, "unknown cmd_type %d in atom %s\n",
+					cmd.header.cmd_type, atom->name);
+			}
+		
+		}	
+	} else { /* check that they were set */
+		foreach(atom, &r300->hw.atomlist) {
+			for(i=1; i < (*atom->check)(r300, atom); i++)
+				if(atom->cmd[i]==0xdeadbeef)
+					fprintf(stderr, "atom %s is untouched\n", atom->name);
+		}	
+	}
+}
+		
 /**
  * Completely recalculates hardware state based on the Mesa state.
  */
@@ -1809,6 +1854,8 @@ void r300ResetHwState(r300ContextPtr r300)
 	if (RADEON_DEBUG & DEBUG_STATE)
 		fprintf(stderr, "%s\n", __FUNCTION__);
 
+	//verify_r300ResetHwState(r300, 1);
+			
 		/* This is a place to initialize registers which
 		   have bitfields accessed by different functions
 		   and not all bits are used */
@@ -1958,9 +2005,6 @@ void r300ResetHwState(r300ContextPtr r300)
 
 	r300PolygonMode(ctx, GL_FRONT, ctx->Polygon.FrontMode);
 	r300PolygonMode(ctx, GL_BACK, ctx->Polygon.BackMode);
-#if 0
-	r300->hw.unk4288.cmd[1] = 0x00000000;
-#endif
 	r300->hw.unk4288.cmd[2] = 0x00000001;
 	r300->hw.unk4288.cmd[3] = 0x00000000;
 	r300->hw.unk4288.cmd[4] = 0x00000000;
@@ -1968,10 +2012,11 @@ void r300ResetHwState(r300ContextPtr r300)
 
 	r300->hw.unk42A0.cmd[1] = 0x00000000;
 
-	update_zbias(ctx, GL_TRIANGLES);/* FIXME */
-#if 0
-	r300->hw.unk42B4.cmd[1] = 0x00000000;
-#endif
+	r300PolygonOffset(ctx, ctx->Polygon.OffsetFactor, ctx->Polygon.OffsetUnits);
+	r300Enable(ctx, GL_POLYGON_OFFSET_POINT, ctx->Polygon.OffsetPoint);
+	r300Enable(ctx, GL_POLYGON_OFFSET_LINE, ctx->Polygon.OffsetLine);
+	r300Enable(ctx, GL_POLYGON_OFFSET_FILL, ctx->Polygon.OffsetFill);
+	
 	r300->hw.unk42C0.cmd[1] = 0x4B7FFFFF;
 	r300->hw.unk42C0.cmd[2] = 0x00000000;
 
@@ -2029,18 +2074,25 @@ void r300ResetHwState(r300ContextPtr r300)
 #endif
 
 	r300BlendColor(ctx, ctx->Color.BlendColor);
-#if 0
-	r300->hw.unk4E10.cmd[1] = 0;
-#endif
 	r300->hw.unk4E10.cmd[2] = 0;
 	r300->hw.unk4E10.cmd[3] = 0;
-
-	r300->hw.cb.cmd[R300_CB_OFFSET] =
-		r300->radeon.radeonScreen->backOffset +
-		r300->radeon.radeonScreen->fbLocation;
-	r300->hw.cb.cmd[R300_CB_PITCH] = r300->radeon.radeonScreen->backPitch
-		| R300_COLOR_UNKNOWN_22_23;
-
+	
+	/* Again, r300ClearBuffer uses this */
+	if(ctx->Visual.doubleBufferMode){
+		r300->hw.cb.cmd[R300_CB_OFFSET] =
+			r300->radeon.radeonScreen->backOffset +
+			r300->radeon.radeonScreen->fbLocation;
+		r300->hw.cb.cmd[R300_CB_PITCH] = r300->radeon.radeonScreen->backPitch
+			| R300_COLOR_UNKNOWN_22_23;
+	} else {
+		r300->hw.cb.cmd[R300_CB_OFFSET] =
+			r300->radeon.radeonScreen->frontOffset +
+			r300->radeon.radeonScreen->fbLocation;
+		r300->hw.cb.cmd[R300_CB_PITCH] = r300->radeon.radeonScreen->frontPitch
+			| R300_COLOR_UNKNOWN_22_23;
+		
+	}
+	
 	r300->hw.unk4E50.cmd[1] = 0;
 	r300->hw.unk4E50.cmd[2] = 0;
 	r300->hw.unk4E50.cmd[3] = 0;
@@ -2099,6 +2151,7 @@ void r300ResetHwState(r300ContextPtr r300)
 	r300->hw.vps.cmd[R300_VPS_ZERO_3] = 0;
 
 //END: TODO
+	//verify_r300ResetHwState(r300, 0);
 
 	r300->hw.all_dirty = GL_TRUE;
 }
@@ -2139,7 +2192,7 @@ void r300InitState(r300ContextPtr r300)
 					 ctx->Visual.depthBits == 24);
 
 	memset(&(r300->state.texture), 0, sizeof(r300->state.texture));
-
+	
 	r300ResetHwState(r300);
 }