freedreno: clear fixes and debugging

Set a few extra registers to make sure we are in proper state for
clearing.  And also add some debug options to mark all state dirty in
clear and gmem operations to aid in debugging.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

4 files changed, 29 insertions, 1 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_clear.c b/src/gallium/drivers/freedreno/freedreno_clear.c
index 149c023d6f0..2cdb7bf1120 100644
--- a/src/gallium/drivers/freedreno/freedreno_clear.c
+++ b/src/gallium/drivers/freedreno/freedreno_clear.c
@@ -67,7 +67,9 @@ fd_clear(struct pipe_context *pctx, unsigned buffers,
 	if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))
 		fd_resource(fb->zsbuf->texture)->dirty = true;
 
-	DBG("depth=%f, stencil=%u", depth, stencil);
+	DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
+			util_format_name(fb->cbufs[0]->format),
+			fb->zsbuf ? util_format_name(fb->zsbuf->format) : "none");
 
 	if ((buffers & PIPE_CLEAR_COLOR) && fb->nr_cbufs)
 		colr  = pack_rgba(fb->cbufs[0]->format, color->f);
@@ -118,6 +120,9 @@ fd_clear(struct pipe_context *pctx, unsigned buffers,
 			if (buffers & PIPE_CLEAR_DEPTH)
 				reg |= A2XX_RB_COPY_CONTROL_CLEAR_MASK(0xf);
 			break;
+		default:
+			assert(1);
+			break;
 		}
 	}
 	OUT_RING(ring, reg);
@@ -155,6 +160,19 @@ fd_clear(struct pipe_context *pctx, unsigned buffers,
 	OUT_RING(ring, reg);
 
 	OUT_PKT3(ring, CP_SET_CONSTANT, 3);
+	OUT_RING(ring, CP_REG(REG_A2XX_RB_STENCILREFMASK_BF));
+	OUT_RING(ring, 0xff000000 | A2XX_RB_STENCILREFMASK_BF_STENCILWRITEMASK(0xff));
+	OUT_RING(ring, 0xff000000 | A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(0xff));
+
+	OUT_PKT3(ring, CP_SET_CONSTANT, 2);
+	OUT_RING(ring, CP_REG(REG_A2XX_RB_COLORCONTROL));
+	OUT_RING(ring, A2XX_RB_COLORCONTROL_ALPHA_FUNC(FUNC_ALWAYS) |
+			A2XX_RB_COLORCONTROL_BLEND_DISABLE |
+			A2XX_RB_COLORCONTROL_ROP_CODE(12) |
+			A2XX_RB_COLORCONTROL_DITHER_MODE(DITHER_DISABLE) |
+			A2XX_RB_COLORCONTROL_DITHER_TYPE(DITHER_PIXEL));
+
+	OUT_PKT3(ring, CP_SET_CONSTANT, 3);
 	OUT_RING(ring, CP_REG(REG_A2XX_PA_CL_CLIP_CNTL));
 	OUT_RING(ring, 0x00000000);        /* PA_CL_CLIP_CNTL */
 	OUT_RING(ring, A2XX_PA_SU_SC_MODE_CNTL_PROVOKING_VTX_LAST |  /* PA_SU_SC_MODE_CNTL */
@@ -202,6 +220,9 @@ fd_clear(struct pipe_context *pctx, unsigned buffers,
 			FD_DIRTY_PROG |
 			FD_DIRTY_CONSTBUF |
 			FD_DIRTY_BLEND;
+
+	if (fd_mesa_debug & FD_DBG_DCLEAR)
+		ctx->dirty = 0xffffffff;
 }
 
 static void
diff --git a/src/gallium/drivers/freedreno/freedreno_gmem.c b/src/gallium/drivers/freedreno/freedreno_gmem.c
index a6925a55731..83e5ea664b7 100644
--- a/src/gallium/drivers/freedreno/freedreno_gmem.c
+++ b/src/gallium/drivers/freedreno/freedreno_gmem.c
@@ -528,4 +528,7 @@ fd_gmem_render_tiles(struct pipe_context *pctx)
 			FD_DIRTY_VERTTEX |
 			FD_DIRTY_FRAGTEX |
 			FD_DIRTY_BLEND;
+
+	if (fd_mesa_debug & FD_DBG_DGMEM)
+		ctx->dirty = 0xffffffff;
 }
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 336d0306ec9..b4fc20e5c59 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -56,6 +56,8 @@
 static const struct debug_named_value debug_options[] = {
 		{"msgs",      FD_DBG_MSGS,   "Print debug messages"},
 		{"disasm",    FD_DBG_DISASM, "Dump TGSI and adreno shader disassembly"},
+		{"dclear",    FD_DBG_DCLEAR, "Mark all state dirty after clear"},
+		{"dgmem",     FD_DBG_DGMEM,  "Mark all state dirty after GMEM tile pass"},
 		DEBUG_NAMED_VALUE_END
 };
 
diff --git a/src/gallium/drivers/freedreno/freedreno_util.h b/src/gallium/drivers/freedreno/freedreno_util.h
index c9af4715454..f73f792857b 100644
--- a/src/gallium/drivers/freedreno/freedreno_util.h
+++ b/src/gallium/drivers/freedreno/freedreno_util.h
@@ -50,6 +50,8 @@ uint32_t fd_tex_swiz(enum pipe_format format, unsigned swizzle_r,
 
 #define FD_DBG_MSGS   0x1
 #define FD_DBG_DISASM 0x2
+#define FD_DBG_DCLEAR 0x4
+#define FD_DBG_DGMEM  0x8
 extern int fd_mesa_debug;
 
 #define DBG(fmt, ...) \