From 3250bacd2411d3f1af50135599380b2140238535 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <skeggsb@gmail.com>
Date: Wed, 12 Mar 2008 02:56:10 +1100
Subject: [PATCH] nv50: create blend stateobj

---
 src/gallium/drivers/nv50/nv50_context.h | 15 ++++++++
 src/gallium/drivers/nv50/nv50_screen.c  | 10 ++++++
 src/gallium/drivers/nv50/nv50_state.c   | 62 ++++++++++++++++++++++++++++++++-
 3 files changed, 86 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/nv50/nv50_context.h b/src/gallium/drivers/nv50/nv50_context.h
index e2656bd..6096818 100644
--- a/src/gallium/drivers/nv50/nv50_context.h
+++ b/src/gallium/drivers/nv50/nv50_context.h
@@ -22,6 +22,13 @@
 #define NOUVEAU_MSG(fmt, args...) \
 	fprintf(stderr, "nouveau: "fmt, ##args);
 
+#define NV50_NEW_BLEND (1 << 0)
+
+struct nv50_blend_stateobj {
+	struct pipe_blend_state pipe;
+	struct nouveau_stateobj *so;
+};
+
 struct nv50_context {
 	struct pipe_context pipe;
 
@@ -29,8 +36,16 @@ struct nv50_context {
 	unsigned pctx_id;
 
 	struct draw_context *draw;
+
+	unsigned dirty;
+	struct nv50_blend_stateobj *blend;
 };
 
+static INLINE struct nv50_context *
+nv50_context(struct pipe_context *pipe)
+{
+	return (struct nv50_context *)pipe;
+}
 
 extern void nv50_init_miptree_functions(struct nv50_context *nv50);
 extern void nv50_init_surface_functions(struct nv50_context *nv50);
diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index f8fd11d..62c23c7 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -103,6 +103,7 @@ nv50_screen_create(struct pipe_winsys *ws, struct nouveau_winsys *nvws,
 	struct nv50_screen *screen = CALLOC_STRUCT(nv50_screen);
 	struct nouveau_stateobj *so;
 	unsigned tesla_class = 0, ret;
+	int i;
 
 	if (!screen)
 		return NULL;
@@ -146,6 +147,15 @@ nv50_screen_create(struct pipe_winsys *ws, struct nouveau_winsys *nvws,
 	so = so_new(128, 0);
 	so_method(so, screen->tesla, NV50TCL_DMA_NOTIFY, 1);
 	so_data  (so, screen->sync->handle);
+	so_method(so, screen->tesla, NV50TCL_DMA_IN_MEMORY0(0),
+		  NV50TCL_DMA_IN_MEMORY0__SIZE);
+	for (i = 0; i < NV50TCL_DMA_IN_MEMORY0__SIZE; i++)
+		so_data(so, nvws->channel->vram->handle);
+	so_method(so, screen->tesla, NV50TCL_DMA_IN_MEMORY1(0),
+		  NV50TCL_DMA_IN_MEMORY1__SIZE);
+	for (i = 0; i < NV50TCL_DMA_IN_MEMORY1__SIZE; i++)
+		so_data(so, nvws->channel->vram->handle);
+
 	so_emit(nvws, so);
 	so_ref(NULL, &so);
 	nvws->push_flush(nvws->channel, 0);
diff --git a/src/gallium/drivers/nv50/nv50_state.c b/src/gallium/drivers/nv50/nv50_state.c
index 99dcab5..7a01100 100644
--- a/src/gallium/drivers/nv50/nv50_state.c
+++ b/src/gallium/drivers/nv50/nv50_state.c
@@ -5,21 +5,81 @@
 #include "nv50_context.h"
 #include "nv50_state.h"
 
+#include "nouveau/nouveau_stateobj.h"
+
 static void *
 nv50_blend_state_create(struct pipe_context *pipe,
 			const struct pipe_blend_state *cso)
 {
-	return NULL;
+	struct nouveau_stateobj *so = so_new(64, 0);
+	struct nouveau_grobj *tesla = nv50_context(pipe)->screen->tesla;
+	struct nv50_blend_stateobj *bso = CALLOC_STRUCT(nv50_blend_stateobj);
+	unsigned cmask = 0, i;
+
+	/*XXX ignored:
+	 * 	- dither
+	 */
+
+	if (cso->blend_enable == 0) {
+		so_method(so, tesla, NV50TCL_BLEND_ENABLE(0), 8);
+		for (i = 0; i < 8; i++)
+			so_data(so, 0);
+	} else {
+		so_method(so, tesla, NV50TCL_BLEND_ENABLE(0), 8);
+		for (i = 0; i < 8; i++)
+			so_data(so, 1);
+		so_method(so, tesla, NV50TCL_BLEND_EQUATION_RGB, 5);
+		so_data  (so, nvgl_blend_eqn(cso->rgb_func));
+		so_data  (so, nvgl_blend_func(cso->rgb_src_factor));
+		so_data  (so, nvgl_blend_func(cso->rgb_dst_factor));
+		so_data  (so, nvgl_blend_eqn(cso->alpha_func));
+		so_data  (so, nvgl_blend_func(cso->alpha_src_factor));
+		so_method(so, tesla, NV50TCL_BLEND_FUNC_DST_ALPHA, 1);
+		so_data  (so, nvgl_blend_func(cso->alpha_dst_factor));
+	}
+
+	if (cso->logicop_enable == 0 ) {
+		so_method(so, tesla, NV50TCL_LOGIC_OP_ENABLE, 1);
+		so_data  (so, 0);
+	} else {
+		so_method(so, tesla, NV50TCL_LOGIC_OP_ENABLE, 2);
+		so_data  (so, 1);
+		so_data  (so, nvgl_logicop_func(cso->logicop_func));
+	}
+
+	if (cso->colormask & PIPE_MASK_R)
+		cmask |= (1 << 0);
+	if (cso->colormask & PIPE_MASK_G)
+		cmask |= (1 << 4);
+	if (cso->colormask & PIPE_MASK_B)
+		cmask |= (1 << 8);
+	if (cso->colormask & PIPE_MASK_A)
+		cmask |= (1 << 12);
+	so_method(so, tesla, NV50TCL_COLOR_MASK(0), 8);
+	for (i = 0; i < 8; i++)
+		so_data(so, cmask);
+
+	bso->pipe = *cso;
+	so_ref(so, &bso->so);
+	return (void *)bso;
 }
 
 static void
 nv50_blend_state_bind(struct pipe_context *pipe, void *hwcso)
 {
+	struct nv50_context *nv50 = nv50_context(pipe);
+
+	nv50->blend = hwcso;
+	nv50->dirty |= NV50_NEW_BLEND;
 }
 
 static void
 nv50_blend_state_delete(struct pipe_context *pipe, void *hwcso)
 {
+	struct nv50_blend_stateobj *bso = hwcso;
+
+	so_ref(NULL, &bso->so);
+	FREE(bso);
 }
 
 static void *
-- 
2.7.4