nv50: supports independent blend enables

diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index 3992469..6af9700 100644 (file)
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -136,7 +136,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, int param)
        case NOUVEAU_CAP_HW_IDXBUF:
                return 0;
        case PIPE_CAP_INDEP_BLEND_ENABLE:
-               return 0;
+               return 1;
        case PIPE_CAP_INDEP_BLEND_FUNC:
                return 0;
        default:

diff --git a/src/gallium/drivers/nv50/nv50_state.c b/src/gallium/drivers/nv50/nv50_state.c
index 815dfa4..da8dc93 100644 (file)
--- a/src/gallium/drivers/nv50/nv50_state.c
+++ b/src/gallium/drivers/nv50/nv50_state.c
@@ -31,6 +31,23 @@
 
 #include "nouveau/nouveau_stateobj.h"
 
+static INLINE uint32_t
+nv50_colormask(unsigned mask)
+{
+       uint32_t cmask = 0;
+
+       if (mask & PIPE_MASK_R)
+               cmask |= 0x0001;
+       if (mask & PIPE_MASK_G)
+               cmask |= 0x0010;
+       if (mask & PIPE_MASK_B)
+               cmask |= 0x0100;
+       if (mask & PIPE_MASK_A)
+               cmask |= 0x1000;
+
+       return cmask;
+}
+
 static void *
 nv50_blend_state_create(struct pipe_context *pipe,
                        const struct pipe_blend_state *cso)
@@ -38,20 +55,29 @@ nv50_blend_state_create(struct pipe_context *pipe,
        struct nouveau_stateobj *so = so_new(5, 24, 0);
        struct nouveau_grobj *tesla = nv50_context(pipe)->screen->tesla;
        struct nv50_blend_stateobj *bso = CALLOC_STRUCT(nv50_blend_stateobj);
-       unsigned cmask = 0, i;
+       unsigned i, blend_enabled = 0;
 
        /*XXX ignored:
         *      - dither
         */
 
-       if (cso->rt[0].blend_enable == 0) {
-               so_method(so, tesla, NV50TCL_BLEND_ENABLE(0), 8);
+       so_method(so, tesla, NV50TCL_BLEND_ENABLE(0), 8);
+       if (cso->independent_blend_enable) {
+               for (i = 0; i < 8; ++i) {
+                       so_data(so, cso->rt[i].blend_enable);
+                       if (cso->rt[i].blend_enable)
+                               blend_enabled = 1;
+               }
+       } else
+       if (cso->rt[0].blend_enable) {
+               blend_enabled = 1;
                for (i = 0; i < 8; i++)
-                       so_data(so, 0);
+                       so_data(so, 1);
        } else {
-               so_method(so, tesla, NV50TCL_BLEND_ENABLE(0), 8);
                for (i = 0; i < 8; i++)
-                       so_data(so, 1);
+                       so_data(so, 0);
+       }
+       if (blend_enabled) {
                so_method(so, tesla, NV50TCL_BLEND_EQUATION_RGB, 5);
                so_data  (so, nvgl_blend_eqn(cso->rt[0].rgb_func));
                so_data  (so, 0x4000 | nvgl_blend_func(cso->rt[0].rgb_src_factor));
@@ -71,17 +97,15 @@ nv50_blend_state_create(struct pipe_context *pipe,
                so_data  (so, nvgl_logicop_func(cso->logicop_func));
        }
 
-       if (cso->rt[0].colormask & PIPE_MASK_R)
-               cmask |= (1 << 0);
-       if (cso->rt[0].colormask & PIPE_MASK_G)
-               cmask |= (1 << 4);
-       if (cso->rt[0].colormask & PIPE_MASK_B)
-               cmask |= (1 << 8);
-       if (cso->rt[0].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);
+       if (cso->independent_blend_enable)
+               for (i = 0; i < 8; ++i)
+                       so_data(so, nv50_colormask(cso->rt[i].colormask));
+       else {
+               uint32_t cmask = nv50_colormask(cso->rt[0].colormask);
+               for (i = 0; i < 8; i++)
+                       so_data(so, cmask);
+       }
 
        bso->pipe = *cso;
        so_ref(so, &bso->so);