From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Mon, 30 Mar 2015 00:54:42 +0000 (-0400)
Subject: freedreno: add support for laying out MRTs in gmem
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d9992ab35a51c574dcfa8049859c0887956ecdf6;p=mesa.git

freedreno: add support for laying out MRTs in gmem

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
---

diff --git a/src/gallium/drivers/freedreno/freedreno_gmem.c b/src/gallium/drivers/freedreno/freedreno_gmem.c
index afe088ac261..6bdd7704b86 100644
--- a/src/gallium/drivers/freedreno/freedreno_gmem.c
+++ b/src/gallium/drivers/freedreno/freedreno_gmem.c
@@ -76,6 +76,27 @@ static uint32_t bin_width(struct fd_context *ctx)
 	return 512;
 }
 
+static uint32_t
+total_size(uint8_t cbuf_cpp[], uint8_t zsbuf_cpp,
+		   uint32_t bin_w, uint32_t bin_h, struct fd_gmem_stateobj *gmem)
+{
+	uint32_t total = 0, i;
+
+	for (i = 0; i < 4; i++) {
+		if (cbuf_cpp[i]) {
+			gmem->cbuf_base[i] = align(total, 0x4000);
+			total = gmem->cbuf_base[i] + cbuf_cpp[i] * bin_w * bin_h;
+		}
+	}
+
+	if (zsbuf_cpp) {
+		gmem->zsbuf_base = align(total, 0x4000);
+		total = gmem->zsbuf_base + zsbuf_cpp * bin_w * bin_h;
+	}
+
+	return total;
+}
+
 static void
 calculate_tiles(struct fd_context *ctx)
 {
@@ -87,26 +108,27 @@ calculate_tiles(struct fd_context *ctx)
 	uint32_t nbins_x = 1, nbins_y = 1;
 	uint32_t bin_w, bin_h;
 	uint32_t max_width = bin_width(ctx);
-	uint32_t cpp = 4;
+	uint8_t cbuf_cpp[4] = {0}, zsbuf_cpp = 0;
 	uint32_t i, j, t, xoff, yoff;
 	uint32_t tpp_x, tpp_y;
 	bool has_zs = !!(ctx->resolve & (FD_BUFFER_DEPTH | FD_BUFFER_STENCIL));
 
-	if (pfb->cbufs[0])
-		cpp = util_format_get_blocksize(pfb->cbufs[0]->format);
+	if (has_zs)
+		zsbuf_cpp = util_format_get_blocksize(pfb->zsbuf->format);
+	for (i = 0; i < pfb->nr_cbufs; i++) {
+		if (pfb->cbufs[i])
+			cbuf_cpp[i] = util_format_get_blocksize(pfb->cbufs[i]->format);
+		else
+			cbuf_cpp[i] = 4;
+	}
 
-	if ((gmem->cpp == cpp) && (gmem->has_zs == has_zs) &&
-			!memcmp(&gmem->scissor, scissor, sizeof(gmem->scissor))) {
+	if (gmem->zsbuf_cpp == zsbuf_cpp &&
+		!memcmp(gmem->cbuf_cpp, cbuf_cpp, sizeof(cbuf_cpp)) &&
+		!memcmp(&gmem->scissor, scissor, sizeof(gmem->scissor))) {
 		/* everything is up-to-date */
 		return;
 	}
 
-	/* if have depth/stencil, we need to leave room: */
-	if (has_zs) {
-		gmem_size /= 2;
-		max_width /= 2;
-	}
-
 	if (fd_mesa_debug & FD_DBG_NOSCIS) {
 		minx = 0;
 		miny = 0;
@@ -133,7 +155,10 @@ calculate_tiles(struct fd_context *ctx)
 	/* then find a bin width/height that satisfies the memory
 	 * constraints:
 	 */
-	while ((bin_w * bin_h * cpp) > gmem_size) {
+	DBG("binning input: cbuf cpp: %d %d %d %d, zsbuf cpp: %d; %dx%d",
+		cbuf_cpp[0], cbuf_cpp[1], cbuf_cpp[2], cbuf_cpp[3], zsbuf_cpp,
+		width, height);
+	while (total_size(cbuf_cpp, zsbuf_cpp, bin_w, bin_h, gmem) > gmem_size) {
 		if (bin_w > bin_h) {
 			nbins_x++;
 			bin_w = align(width / nbins_x, 32);
@@ -146,8 +171,8 @@ calculate_tiles(struct fd_context *ctx)
 	DBG("using %d bins of size %dx%d", nbins_x*nbins_y, bin_w, bin_h);
 
 	gmem->scissor = *scissor;
-	gmem->cpp = cpp;
-	gmem->has_zs = has_zs;
+	memcpy(gmem->cbuf_cpp, cbuf_cpp, sizeof(cbuf_cpp));
+	gmem->zsbuf_cpp = zsbuf_cpp;
 	gmem->bin_h = bin_h;
 	gmem->bin_w = bin_w;
 	gmem->nbins_x = nbins_x;
diff --git a/src/gallium/drivers/freedreno/freedreno_gmem.h b/src/gallium/drivers/freedreno/freedreno_gmem.h
index ff322df3c2f..81f9b6abe98 100644
--- a/src/gallium/drivers/freedreno/freedreno_gmem.h
+++ b/src/gallium/drivers/freedreno/freedreno_gmem.h
@@ -47,12 +47,14 @@ struct fd_tile {
 
 struct fd_gmem_stateobj {
 	struct pipe_scissor_state scissor;
-	uint cpp;
+	uint32_t cbuf_base[4];
+	uint32_t zsbuf_base;
+	uint8_t cbuf_cpp[4];
+	uint8_t zsbuf_cpp;
 	uint16_t bin_h, nbins_y;
 	uint16_t bin_w, nbins_x;
 	uint16_t minx, miny;
 	uint16_t width, height;
-	bool has_zs;  /* gmem config using depth/stencil? */
 };
 
 struct fd_context;