freedreno: small bit of cleanup about max rendertargets

We hard-coded 4 or 8 as the max in various places.  Switch it all to a
define since the limit will go up with a4xx (and maybe even again in the
future?)

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

13 files changed, 40 insertions, 17 deletions

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_blend.h b/src/gallium/drivers/freedreno/a3xx/fd3_blend.h
index 0267001b0b9..142df7c300f 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_blend.h
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_blend.h
@@ -32,6 +32,8 @@
 #include "pipe/p_state.h"
 #include "pipe/p_context.h"
 
+#include "freedreno_util.h"
+
 struct fd3_blend_stateobj {
 	struct pipe_blend_state base;
 	struct {
@@ -42,7 +44,7 @@ struct fd3_blend_stateobj {
 		/* Blend control bits for alpha channel */
 		uint32_t blend_control_alpha;
 		uint32_t control;
-	} rb_mrt[4];
+	} rb_mrt[A3XX_MAX_RENDER_TARGETS];
 };
 
 static inline struct fd3_blend_stateobj *
diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_draw.c b/src/gallium/drivers/freedreno/a3xx/fd3_draw.c
index fc30d4842ba..43550ae6a22 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_draw.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_draw.c
@@ -324,7 +324,7 @@ fd3_clear(struct fd_context *ctx, unsigned buffers,
 				A3XX_RB_STENCIL_CONTROL_ZFAIL_BF(STENCIL_KEEP));
 	}
 
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < A3XX_MAX_RENDER_TARGETS; i++) {
 		OUT_PKT0(ring, REG_A3XX_RB_MRT_CONTROL(i), 1);
 		OUT_RING(ring, A3XX_RB_MRT_CONTROL_ROP_CODE(ROP_COPY) |
 				A3XX_RB_MRT_CONTROL_DITHER_MODE(DITHER_ALWAYS) |
diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_gmem.c b/src/gallium/drivers/freedreno/a3xx/fd3_gmem.c
index 7d3975761dd..4689085e516 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_gmem.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_gmem.c
@@ -57,7 +57,7 @@ emit_mrt(struct fd_ringbuffer *ring, unsigned nr_bufs,
 		tile_mode = LINEAR;
 	}
 
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < A3XX_MAX_RENDER_TARGETS; i++) {
 		enum pipe_format pformat = 0;
 		enum a3xx_color_fmt format = 0;
 		enum a3xx_color_swap swap = WZYX;
diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_program.c b/src/gallium/drivers/freedreno/a3xx/fd3_program.c
index 7cd4885ab4f..e98c6b5cff4 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_program.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_program.c
@@ -136,6 +136,8 @@ fd3_program_emit(struct fd_ringbuffer *ring, struct fd3_emit *emit,
 	int constmode;
 	int i, j, k;
 
+	debug_assert(nr <= ARRAY_SIZE(color_regid));
+
 	vp = fd3_emit_get_vp(emit);
 
 	if (emit->key.binning_pass) {
@@ -207,7 +209,7 @@ fd3_program_emit(struct fd_ringbuffer *ring, struct fd3_emit *emit,
 			unsigned idx = sem2idx(sem);
 			if (sem2name(sem) != TGSI_SEMANTIC_COLOR)
 				continue;
-			assert(idx < 4);
+			debug_assert(idx < ARRAY_SIZE(color_regid));
 			color_regid[idx] = fp->outputs[i].regid;
 		}
 	}
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_blend.h b/src/gallium/drivers/freedreno/a4xx/fd4_blend.h
index 821b3c82832..7620d00a625 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_blend.h
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_blend.h
@@ -32,13 +32,15 @@
 #include "pipe/p_state.h"
 #include "pipe/p_context.h"
 
+#include "freedreno_util.h"
+
 struct fd4_blend_stateobj {
 	struct pipe_blend_state base;
 	struct {
 		uint32_t control;
 		uint32_t buf_info;
 		uint32_t blend_control;
-	} rb_mrt[8];
+	} rb_mrt[A4XX_MAX_RENDER_TARGETS];
 	uint32_t rb_fs_output;
 };
 
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_draw.c b/src/gallium/drivers/freedreno/a4xx/fd4_draw.c
index ff1dfdc392f..154154190db 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_draw.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_draw.c
@@ -265,7 +265,7 @@ fd4_clear(struct fd_context *ctx, unsigned buffers,
 		ce = 0x0;
 	}
 
-	for (i = 0; i < 8; i++) {
+	for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
 		OUT_PKT0(ring, REG_A4XX_RB_MRT_CONTROL(i), 1);
 		OUT_RING(ring, A4XX_RB_MRT_CONTROL_FASTCLEAR |
 				A4XX_RB_MRT_CONTROL_B11 |
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_emit.c b/src/gallium/drivers/freedreno/a4xx/fd4_emit.c
index 62a1e9ee955..df96601c747 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_emit.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_emit.c
@@ -487,7 +487,7 @@ fd4_emit_state(struct fd_context *ctx, struct fd_ringbuffer *ring,
 		struct fd4_blend_stateobj *blend = fd4_blend_stateobj(ctx->blend);
 		uint32_t i;
 
-		for (i = 0; i < 8; i++) {
+		for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
 			OUT_PKT0(ring, REG_A4XX_RB_MRT_CONTROL(i), 1);
 			OUT_RING(ring, blend->rb_mrt[i].control);
 
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_gmem.c b/src/gallium/drivers/freedreno/a4xx/fd4_gmem.c
index 9a905062071..976255f5879 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_gmem.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_gmem.c
@@ -63,7 +63,7 @@ emit_mrt(struct fd_ringbuffer *ring, unsigned nr_bufs,
 		tile_mode = TILE4_LINEAR;
 	}
 
-	for (i = 0; i < 8; i++) {
+	for (i = 0; i < A4XX_MAX_RENDER_TARGETS; i++) {
 		enum a4xx_color_fmt format = 0;
 		enum a3xx_color_swap swap = WZYX;
 		struct fd_resource *rsc = NULL;
diff --git a/src/gallium/drivers/freedreno/freedreno_context.h b/src/gallium/drivers/freedreno/freedreno_context.h
index cc585af1b3f..509a90fdf23 100644
--- a/src/gallium/drivers/freedreno/freedreno_context.h
+++ b/src/gallium/drivers/freedreno/freedreno_context.h
@@ -193,7 +193,7 @@ struct fd_context {
 	struct fd_program_stateobj solid_prog; // TODO move to screen?
 
 	/* shaders used by mem->gmem blits: */
-	struct fd_program_stateobj blit_prog[8]; // TODO move to screen?
+	struct fd_program_stateobj blit_prog[MAX_RENDER_TARGETS]; // TODO move to screen?
 	struct fd_program_stateobj blit_z, blit_zs;
 
 	/* do we need to mem2gmem before rendering.  We don't, if for example,
diff --git a/src/gallium/drivers/freedreno/freedreno_gmem.c b/src/gallium/drivers/freedreno/freedreno_gmem.c
index c105378ec4e..648db9baee5 100644
--- a/src/gallium/drivers/freedreno/freedreno_gmem.c
+++ b/src/gallium/drivers/freedreno/freedreno_gmem.c
@@ -82,7 +82,7 @@ total_size(uint8_t cbuf_cpp[], uint8_t zsbuf_cpp[2],
 {
 	uint32_t total = 0, i;
 
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < MAX_RENDER_TARGETS; i++) {
 		if (cbuf_cpp[i]) {
 			gmem->cbuf_base[i] = align(total, 0x4000);
 			total = gmem->cbuf_base[i] + cbuf_cpp[i] * bin_w * bin_h;
@@ -113,7 +113,7 @@ 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);
-	uint8_t cbuf_cpp[4] = {0}, zsbuf_cpp[2] = {0};
+	uint8_t cbuf_cpp[MAX_RENDER_TARGETS] = {0}, zsbuf_cpp[2] = {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));
@@ -162,12 +162,17 @@ calculate_tiles(struct fd_context *ctx)
 		bin_w = align(width / nbins_x, 32);
 	}
 
+	if (fd_mesa_debug & FD_DBG_MSGS) {
+		debug_printf("binning input: cbuf cpp:");
+		for (i = 0; i < pfb->nr_cbufs; i++)
+			debug_printf(" %d", cbuf_cpp[i]);
+		debug_printf(", zsbuf cpp: %d; %dx%d\n",
+				zsbuf_cpp[0], width, height);
+	}
+
 	/* then find a bin width/height that satisfies the memory
 	 * constraints:
 	 */
-	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[0],
-		width, height);
 	while (total_size(cbuf_cpp, zsbuf_cpp, bin_w, bin_h, gmem) > gmem_size) {
 		if (bin_w > bin_h) {
 			nbins_x++;
diff --git a/src/gallium/drivers/freedreno/freedreno_gmem.h b/src/gallium/drivers/freedreno/freedreno_gmem.h
index 5867235db90..38b557eb077 100644
--- a/src/gallium/drivers/freedreno/freedreno_gmem.h
+++ b/src/gallium/drivers/freedreno/freedreno_gmem.h
@@ -31,6 +31,8 @@
 
 #include "pipe/p_context.h"
 
+#include "freedreno_util.h"
+
 /* per-pipe configuration for hw binning: */
 struct fd_vsc_pipe {
 	struct fd_bo *bo;
@@ -47,9 +49,9 @@ struct fd_tile {
 
 struct fd_gmem_stateobj {
 	struct pipe_scissor_state scissor;
-	uint32_t cbuf_base[4];
+	uint32_t cbuf_base[MAX_RENDER_TARGETS];
 	uint32_t zsbuf_base[2];
-	uint8_t cbuf_cpp[4];
+	uint8_t cbuf_cpp[MAX_RENDER_TARGETS];
 	uint8_t zsbuf_cpp[2];
 	uint16_t bin_h, nbins_y;
 	uint16_t bin_w, nbins_x;
diff --git a/src/gallium/drivers/freedreno/freedreno_program.c b/src/gallium/drivers/freedreno/freedreno_program.c
index 5e344e69146..e6a647852a3 100644
--- a/src/gallium/drivers/freedreno/freedreno_program.c
+++ b/src/gallium/drivers/freedreno/freedreno_program.c
@@ -96,7 +96,11 @@ fd_prog_blit(struct pipe_context *pctx, int rts, bool depth)
 {
 	int i;
 	struct ureg_src tc;
-	struct ureg_program *ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
+	struct ureg_program *ureg;
+
+	debug_assert(rts <= MAX_RENDER_TARGETS);
+
+	ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 	if (!ureg)
 		return NULL;
 
diff --git a/src/gallium/drivers/freedreno/freedreno_util.h b/src/gallium/drivers/freedreno/freedreno_util.h
index 6aec2585ceb..ed568173497 100644
--- a/src/gallium/drivers/freedreno/freedreno_util.h
+++ b/src/gallium/drivers/freedreno/freedreno_util.h
@@ -54,6 +54,12 @@ enum adreno_stencil_op fd_stencil_op(unsigned op);
 /* TBD if it is same on a2xx, but for now: */
 #define MAX_MIP_LEVELS A3XX_MAX_MIP_LEVELS
 
+#define A2XX_MAX_RENDER_TARGETS 1
+#define A3XX_MAX_RENDER_TARGETS 4
+#define A4XX_MAX_RENDER_TARGETS 8
+/* for now until a4xx MRT support: */
+#define MAX_RENDER_TARGETS A3XX_MAX_RENDER_TARGETS
+
 #define FD_DBG_MSGS     0x0001
 #define FD_DBG_DISASM   0x0002
 #define FD_DBG_DCLEAR   0x0004