[PATCH] etnaviv: fix blend color for RB swapped rendertargets

[Lucas Stach]

Same as with the colormasks, the blend color needs to be swizzled according
to the rendertarget format.

Signed-off-by: Lucas Stach <dev at lynxeye.de>
---
 src/gallium/drivers/etnaviv/etnaviv_blend.c    | 35 ++++++++++++++++++++++++++
 src/gallium/drivers/etnaviv/etnaviv_blend.h    |  6 +++++
 src/gallium/drivers/etnaviv/etnaviv_internal.h |  1 +
 src/gallium/drivers/etnaviv/etnaviv_state.c    | 17 +++----------
 4 files changed, 45 insertions(+), 14 deletions(-)

diff --git a/src/gallium/drivers/etnaviv/etnaviv_blend.c b/src/gallium/drivers/etnaviv/etnaviv_blend.c
index 8ea09a3..6ed0e0f 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_blend.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_blend.c
@@ -129,3 +129,38 @@ etna_update_blend(struct etna_context *ctx)
 
    return true;
 }
+
+void
+etna_set_blend_color(struct pipe_context *pctx, const struct pipe_blend_color *bc)
+{
+   struct etna_context *ctx = etna_context(pctx);
+   struct compiled_blend_color *cs = &ctx->blend_color;
+
+   memcpy(cs->color, bc->color, sizeof(float) * 4);
+
+   ctx->dirty |= ETNA_DIRTY_BLEND_COLOR;
+}
+
+bool
+etna_update_blend_color(struct etna_context *ctx)
+{
+   struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
+   struct compiled_blend_color *cs = &ctx->blend_color;
+
+   if (pfb->cbufs[0] &&
+       translate_rs_format_rb_swap(pfb->cbufs[0]->texture->format)) {
+      cs->PE_ALPHA_BLEND_COLOR =
+         VIVS_PE_ALPHA_BLEND_COLOR_R(etna_cfloat_to_uint8(cs->color[2])) |
+         VIVS_PE_ALPHA_BLEND_COLOR_G(etna_cfloat_to_uint8(cs->color[1])) |
+         VIVS_PE_ALPHA_BLEND_COLOR_B(etna_cfloat_to_uint8(cs->color[0])) |
+         VIVS_PE_ALPHA_BLEND_COLOR_A(etna_cfloat_to_uint8(cs->color[3]));
+   } else {
+      cs->PE_ALPHA_BLEND_COLOR =
+         VIVS_PE_ALPHA_BLEND_COLOR_R(etna_cfloat_to_uint8(cs->color[0])) |
+         VIVS_PE_ALPHA_BLEND_COLOR_G(etna_cfloat_to_uint8(cs->color[1])) |
+         VIVS_PE_ALPHA_BLEND_COLOR_B(etna_cfloat_to_uint8(cs->color[2])) |
+         VIVS_PE_ALPHA_BLEND_COLOR_A(etna_cfloat_to_uint8(cs->color[3]));
+	}
+
+	return true;
+}
diff --git a/src/gallium/drivers/etnaviv/etnaviv_blend.h b/src/gallium/drivers/etnaviv/etnaviv_blend.h
index e26864d..c219396 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_blend.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_blend.h
@@ -56,4 +56,10 @@ etna_blend_state_create(struct pipe_context *pctx,
 bool
 etna_update_blend(struct etna_context *ctx);
 
+void
+etna_set_blend_color(struct pipe_context *pctx, const struct pipe_blend_color *bc);
+
+bool
+etna_update_blend_color(struct etna_context *ctx);
+
 #endif
diff --git a/src/gallium/drivers/etnaviv/etnaviv_internal.h b/src/gallium/drivers/etnaviv/etnaviv_internal.h
index 2f8dacb..1212fdf 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_internal.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_internal.h
@@ -126,6 +126,7 @@ struct etna_specs {
 
 /* Compiled pipe_blend_color */
 struct compiled_blend_color {
+   float color[4];
    uint32_t PE_ALPHA_BLEND_COLOR;
 };
 
diff --git a/src/gallium/drivers/etnaviv/etnaviv_state.c b/src/gallium/drivers/etnaviv/etnaviv_state.c
index fb7bb0f..fc3d9f1 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_state.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_state.c
@@ -43,20 +43,6 @@
 #include "util/u_memory.h"
 
 static void
-etna_set_blend_color(struct pipe_context *pctx, const struct pipe_blend_color *bc)
-{
-   struct etna_context *ctx = etna_context(pctx);
-   struct compiled_blend_color *cs = &ctx->blend_color;
-
-   cs->PE_ALPHA_BLEND_COLOR =
-      VIVS_PE_ALPHA_BLEND_COLOR_R(etna_cfloat_to_uint8(bc->color[0])) |
-      VIVS_PE_ALPHA_BLEND_COLOR_G(etna_cfloat_to_uint8(bc->color[1])) |
-      VIVS_PE_ALPHA_BLEND_COLOR_B(etna_cfloat_to_uint8(bc->color[2])) |
-      VIVS_PE_ALPHA_BLEND_COLOR_A(etna_cfloat_to_uint8(bc->color[3]));
-   ctx->dirty |= ETNA_DIRTY_BLEND_COLOR;
-}
-
-static void
 etna_set_stencil_ref(struct pipe_context *pctx, const struct pipe_stencil_ref *sr)
 {
    struct etna_context *ctx = etna_context(pctx);
@@ -600,6 +586,9 @@ static const struct etna_state_updater etna_state_updates[] = {
    },
    {
       etna_update_blend, ETNA_DIRTY_BLEND | ETNA_DIRTY_FRAMEBUFFER
+   },
+   {
+      etna_update_blend_color, ETNA_DIRTY_BLEND_COLOR | ETNA_DIRTY_FRAMEBUFFER,
    }
 };
 
-- 
2.9.4