5 files changed, 119 insertions, 4 deletions

diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h
index eb76a1ca05a..0c72aa06704 100644
--- a/src/mesa/drivers/dri/r300/r300_context.h
+++ b/src/mesa/drivers/dri/r300/r300_context.h
@@ -661,7 +661,8 @@ struct r300_state {
 	int aos_count;
 
 	GLuint *Elts;
-
+	struct r300_dma_region elt_ao;
+	
 	GLuint render_inputs; /* actual render inputs that R300 was configured for. 
 				 They are the same as tnl->render_inputs for fixed pipeline */
 
diff --git a/src/mesa/drivers/dri/r300/r300_emit.h b/src/mesa/drivers/dri/r300/r300_emit.h
index 65ed7ff0ec6..cba482f0fb4 100644
--- a/src/mesa/drivers/dri/r300/r300_emit.h
+++ b/src/mesa/drivers/dri/r300/r300_emit.h
@@ -21,6 +21,7 @@
 #define RADEON_CP_PACKET3_3D_DRAW_IMMD              0xC0002900
 #define RADEON_CP_PACKET3_3D_DRAW_INDX              0xC0002A00
 #define RADEON_CP_PACKET3_LOAD_PALETTE              0xC0002C00
+#define RADEON_CP_PACKET3_INDX_BUFFER               0xC0003300
 #define RADEON_CP_PACKET3_3D_DRAW_VBUF_2            0xC0003400
 #define RADEON_CP_PACKET3_3D_DRAW_IMMD_2            0xC0003500
 #define RADEON_CP_PACKET3_3D_DRAW_INDX_2            0xC0003600
diff --git a/src/mesa/drivers/dri/r300/r300_maos.c b/src/mesa/drivers/dri/r300/r300_maos.c
index e4ea676119f..2f112d4bb21 100644
--- a/src/mesa/drivers/dri/r300/r300_maos.c
+++ b/src/mesa/drivers/dri/r300/r300_maos.c
@@ -209,7 +209,58 @@ static void emit_vector(GLcontext * ctx,
 	}
 
 }
-				
+
+void emit_elts(GLcontext * ctx, GLuint *elts, int oec, int ec)
+{
+	r300ContextPtr rmesa = R300_CONTEXT(ctx);
+	radeonScreenPtr rsp=rmesa->radeon.radeonScreen;
+	unsigned short int *hw_elts;
+	int i;
+	int inc_found=0;
+	int dec_found=0;
+	
+	hw_elts=malloc(ec*sizeof(unsigned short int));
+	
+	for(i=0; i < oec; i++)
+		hw_elts[i]=(unsigned short int)elts[i];
+	
+	/* Work around magic_1 problem by filling rest of the data with last idx */
+	for(; i < ec; i++)
+		hw_elts[i]=(unsigned short int)elts[oec-1];
+	
+	memcpy(rsp->gartTextures.map, hw_elts, ec*sizeof(unsigned short int));
+	//memset(((char *)rsp->gartTextures.map)+ec*sizeof(unsigned short int), 0, 1024);
+	/*emit_vector(ctx, &rmesa->state.elt_ao,
+			(char *)hw_elts,
+			2,
+			2, ec);*/
+	/*
+	// some debug code...
+	inc_found=1;
+	for(i=1; i < oec; i++)
+		if(hw_elts[i-1] != hw_elts[i]+1){
+			inc_found=0;
+			break;
+		}
+		
+	dec_found=1;
+	for(i=1; i < oec; i++)
+		if(hw_elts[i-1] != hw_elts[i]-1){
+			dec_found=0;
+		}
+		
+	fprintf(stderr, "elts:");
+	for(i=0; i < oec; i++)
+		fprintf(stderr, "%d\n", hw_elts[i]);
+		fprintf(stderr, "\n");
+		
+	if(inc_found==0 && dec_found==0){
+		fprintf(stderr, "error found\n");
+		exit(-1);
+	}
+	*/
+}
+		
 /* Emit vertex data to GART memory (unless immediate mode)
  * Route inputs to the vertex processor
  */
@@ -479,6 +530,7 @@ void r300ReleaseArrays(GLcontext * ctx)
 	r300ContextPtr rmesa = R300_CONTEXT(ctx);
 	int i;
 
+	//r300ReleaseDmaRegion(rmesa, &rmesa->state.elt_ao, __FUNCTION__);
 	for (i=0;i<rmesa->state.aos_count;i++) {
 		r300ReleaseDmaRegion(rmesa, &rmesa->state.aos[i], __FUNCTION__);
 	}
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index 883d9b944c5..d44d149bffa 100644
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -1308,6 +1308,10 @@ I am fairly certain that they are correct unless stated otherwise in comments.
 // Note that if the total number of arrays is odd, the third dword of
 // the last block is omitted.
 #define R300_PACKET3_3D_LOAD_VBPNTR         0x00002F00
+
+#define R300_PACKET3_INDX_BUFFER            0x00003300
+#define R300_PACKET3_3D_DRAW_INDX_2         0x00003600
+
 //END
 
 #endif /* _R300_REG_H */
diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c
index b66fa3fbd0e..4e90ea2152a 100644
--- a/src/mesa/drivers/dri/r300/r300_render.c
+++ b/src/mesa/drivers/dri/r300/r300_render.c
@@ -253,6 +253,8 @@ void dump_inputs(GLcontext *ctx, int render_inputs)
 {
 	int k;
 	fprintf(stderr, "inputs:");
+	fprintf(stderr, "%08x ", render_inputs);
+	
 	if(render_inputs & _TNL_BIT_POS)
 		fprintf(stderr, "_TNL_BIT_POS ");
 	if(render_inputs & _TNL_BIT_NORMAL)
@@ -512,6 +514,44 @@ static GLboolean r300_run_immediate_render(GLcontext *ctx,
 }
 
 /* vertex buffer implementation */
+void emit_elts(GLcontext * ctx, GLuint *elts, int oec, int ec);
+
+#    define R300_EB_UNK1_SHIFT 24
+#    define R300_EB_UNK1 (0x80<<24)
+#    define R300_EB_UNK2 0x0810
+
+unsigned long get_num_elts(unsigned long count)
+{
+	unsigned long magic_1;
+	
+	/* round up elt count so that magic_1 is 0 (divisable by 4)*/
+	return (count+3) & (~3);
+	//return count - (count % 4);
+}
+
+static void inline fire_EB(PREFIX unsigned long addr, int vertex_count, int type)
+{
+	LOCAL_VARS
+	unsigned long magic_1;
+	unsigned char magic1_tbl[4]={ 0, 6, 4, 2 };
+
+	magic_1 = magic1_tbl[vertex_count % 4];
+
+	if(magic_1 != 0){
+		WARN_ONCE("Dont know how to handle this yet!\n");
+		return ;
+	}
+	
+	check_space(6);
+	
+	start_packet3(RADEON_CP_PACKET3_3D_DRAW_INDX_2, 0);
+	e32(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (vertex_count<<16) | type);
+	
+	start_packet3(RADEON_CP_PACKET3_INDX_BUFFER, 2);
+	e32(R300_EB_UNK1 | (magic_1 << 16) | R300_EB_UNK2);
+	e32(addr);
+	e32(((vertex_count+1) / 2) + magic_1);
+}
 
 static void r300_render_vb_primitive(r300ContextPtr rmesa, 
 	GLcontext *ctx,
@@ -520,15 +560,27 @@ static void r300_render_vb_primitive(r300ContextPtr rmesa,
 	int prim)
 {
    int type, num_verts;
+   radeonScreenPtr rsp=rmesa->radeon.radeonScreen;
    LOCAL_VARS
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb;
    
    type=r300_get_primitive_type(rmesa, ctx, prim);
    num_verts=r300_get_num_verts(rmesa, ctx, end-start, prim);
    
    if(type<0 || num_verts <= 0)return;
    
-   
-   fire_AOS(PASS_PREFIX num_verts, type);
+   if(rmesa->state.Elts){
+	unsigned long elt_count;
+	
+	WARN_ONCE("Rendering with elts\n");
+	
+	elt_count=get_num_elts(num_verts);
+	//emit_elts(ctx, rmesa->state.Elts, VB->Count, get_num_elts(VB->Count));
+	emit_elts(ctx, rmesa->state.Elts+start, num_verts, elt_count);
+	fire_EB(PASS_PREFIX rsp->gartTextures.handle/*rmesa->state.elt_ao.aos_offset*/, elt_count, type);
+   }else
+	   fire_AOS(PASS_PREFIX num_verts, type);
 }
 
 static GLboolean r300_run_vb_render(GLcontext *ctx,
@@ -546,6 +598,11 @@ static GLboolean r300_run_vb_render(GLcontext *ctx,
    
 	r300ReleaseArrays(ctx);
 	r300EmitArrays(ctx, GL_FALSE);
+	//dump_inputs(ctx, rmesa->state.render_inputs);
+#if 0 /* Cant do this here yet due to magic_1 */
+	if(rmesa->state.Elts)
+		emit_elts(ctx, rmesa->state.Elts, /*600*/VB->Count, get_num_elts(/*600*/VB->Count));
+#endif	
 	
 //	LOCK_HARDWARE(&(rmesa->radeon));