[g3dvl] start supporting different render target formats

Let's start with NV12, but anything else shouldn't be much of a problem any more.

7 files changed, 173 insertions, 102 deletions

diff --git a/src/gallium/auxiliary/vl/vl_compositor.c b/src/gallium/auxiliary/vl/vl_compositor.c
index 25f7d5fa1da..e487abf915e 100644
--- a/src/gallium/auxiliary/vl/vl_compositor.c
+++ b/src/gallium/auxiliary/vl/vl_compositor.c
@@ -506,7 +506,7 @@ vl_compositor_set_buffer_layer(struct pipe_video_compositor *compositor,
    c->used_layers |= 1 << layer;
    c->layers[layer].fs = c->fs_video_buffer;
 
-   sampler_views = buffer->get_sampler_views(buffer);
+   sampler_views = buffer->get_sampler_view_components(buffer);
    for (i = 0; i < 3; ++i)
       pipe_sampler_view_reference(&c->layers[layer].sampler_views[i], sampler_views[i]);
 
diff --git a/src/gallium/auxiliary/vl/vl_context.c b/src/gallium/auxiliary/vl/vl_context.c
index 1240b0b4c32..be28bb507e6 100644
--- a/src/gallium/auxiliary/vl/vl_context.c
+++ b/src/gallium/auxiliary/vl/vl_context.c
@@ -35,6 +35,18 @@
 #include "vl_compositor.h"
 #include "vl_mpeg12_decoder.h"
 
+const enum pipe_format const_resource_formats_YV12[3] = {
+   PIPE_FORMAT_R8_UNORM,
+   PIPE_FORMAT_R8_UNORM,
+   PIPE_FORMAT_R8_UNORM
+};
+
+const enum pipe_format const_resource_formats_NV12[3] = {
+   PIPE_FORMAT_R8_UNORM,
+   PIPE_FORMAT_R8G8_UNORM,
+   PIPE_FORMAT_NONE
+};
+
 static void
 vl_context_destroy(struct pipe_video_context *context)
 {
@@ -202,19 +214,28 @@ vl_context_create_buffer(struct pipe_video_context *context,
                          enum pipe_video_chroma_format chroma_format,
                          unsigned width, unsigned height)
 {
-   const enum pipe_format resource_formats[3] = {
-      PIPE_FORMAT_R8_UNORM,
-      PIPE_FORMAT_R8_UNORM,
-      PIPE_FORMAT_R8_UNORM
-   };
-
    struct vl_context *ctx = (struct vl_context*)context;
    struct pipe_video_buffer *result;
    unsigned buffer_width, buffer_height;
 
+   const enum pipe_format *resource_formats;
+
    assert(context);
    assert(width > 0 && height > 0);
-   assert(buffer_format == PIPE_FORMAT_YV12);
+
+   switch(buffer_format) {
+   case PIPE_FORMAT_YV12:
+      resource_formats = const_resource_formats_YV12;
+      break;
+
+   case PIPE_FORMAT_NV12:
+      resource_formats = const_resource_formats_NV12;
+      break;
+
+   default:
+      assert(0);
+      return NULL;
+   }
 
    buffer_width = ctx->pot_buffers ? util_next_power_of_two(width) : width;
    buffer_height = ctx->pot_buffers ? util_next_power_of_two(height) : height;
diff --git a/src/gallium/auxiliary/vl/vl_mc.c b/src/gallium/auxiliary/vl/vl_mc.c
index 137a1beaa0d..ecdce6b28bd 100644
--- a/src/gallium/auxiliary/vl/vl_mc.c
+++ b/src/gallium/auxiliary/vl/vl_mc.c
@@ -368,6 +368,7 @@ init_pipe_state(struct vl_mc *r)
    struct pipe_sampler_state sampler;
    struct pipe_blend_state blend;
    struct pipe_rasterizer_state rs_state;
+   unsigned i;
 
    assert(r);
 
@@ -391,28 +392,30 @@ init_pipe_state(struct vl_mc *r)
    if (!r->sampler_ycbcr)
       goto error_sampler_ycbcr;
 
-   memset(&blend, 0, sizeof blend);
-   blend.independent_blend_enable = 0;
-   blend.rt[0].blend_enable = 1;
-   blend.rt[0].rgb_func = PIPE_BLEND_ADD;
-   blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
-   blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
-   blend.rt[0].alpha_func = PIPE_BLEND_ADD;
-   blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
-   blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
-   blend.logicop_enable = 0;
-   blend.logicop_func = PIPE_LOGICOP_CLEAR;
-   blend.rt[0].colormask = PIPE_MASK_RGBA;
-   blend.dither = 0;
-   r->blend_clear = r->pipe->create_blend_state(r->pipe, &blend);
-   if (!r->blend_clear)
-      goto error_blend_clear;
-
-   blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
-   blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
-   r->blend_add = r->pipe->create_blend_state(r->pipe, &blend);
-   if (!r->blend_add)
-      goto error_blend_add;
+   for (i = 0; i < VL_MC_NUM_BLENDERS; ++i) {
+      memset(&blend, 0, sizeof blend);
+      blend.independent_blend_enable = 0;
+      blend.rt[0].blend_enable = 1;
+      blend.rt[0].rgb_func = PIPE_BLEND_ADD;
+      blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
+      blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
+      blend.rt[0].alpha_func = PIPE_BLEND_ADD;
+      blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
+      blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
+      blend.logicop_enable = 0;
+      blend.logicop_func = PIPE_LOGICOP_CLEAR;
+      blend.rt[0].colormask = i;
+      blend.dither = 0;
+      r->blend_clear[i] = r->pipe->create_blend_state(r->pipe, &blend);
+      if (!r->blend_clear[i])
+         goto error_blend;
+
+      blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
+      blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
+      r->blend_add[i] = r->pipe->create_blend_state(r->pipe, &blend);
+      if (!r->blend_add[i])
+         goto error_blend;
+   }
 
    memset(&rs_state, 0, sizeof(rs_state));
    /*rs_state.sprite_coord_enable */
@@ -427,12 +430,15 @@ init_pipe_state(struct vl_mc *r)
    return true;
 
 error_rs_state:
-   r->pipe->delete_blend_state(r->pipe, r->blend_add);
+error_blend:
+   for (i = 0; i < VL_MC_NUM_BLENDERS; ++i) {
+      if (r->blend_add[i])
+         r->pipe->delete_blend_state(r->pipe, r->blend_add[i]);
 
-error_blend_add:
-   r->pipe->delete_blend_state(r->pipe, r->blend_clear);
+      if (r->blend_clear[i])
+         r->pipe->delete_blend_state(r->pipe, r->blend_clear[i]);
+   }
 
-error_blend_clear:
    r->pipe->delete_sampler_state(r->pipe, r->sampler_ref);
 
 error_sampler_ref:
@@ -445,12 +451,16 @@ error_sampler_ycbcr:
 static void
 cleanup_pipe_state(struct vl_mc *r)
 {
+   unsigned i;
+
    assert(r);
 
    r->pipe->delete_sampler_state(r->pipe, r->sampler_ref);
    r->pipe->delete_sampler_state(r->pipe, r->sampler_ycbcr);
-   r->pipe->delete_blend_state(r->pipe, r->blend_clear);
-   r->pipe->delete_blend_state(r->pipe, r->blend_add);
+   for (i = 0; i < VL_MC_NUM_BLENDERS; ++i) {
+      r->pipe->delete_blend_state(r->pipe, r->blend_clear[i]);
+      r->pipe->delete_blend_state(r->pipe, r->blend_add[i]);
+   }
    r->pipe->delete_rasterizer_state(r->pipe, r->rs_state);
 }
 
@@ -520,11 +530,9 @@ vl_mc_cleanup(struct vl_mc *renderer)
 }
 
 bool
-vl_mc_init_buffer(struct vl_mc *renderer, struct vl_mc_buffer *buffer,
-                  struct pipe_sampler_view *source)
+vl_mc_init_buffer(struct vl_mc *renderer, struct vl_mc_buffer *buffer)
 {
    assert(renderer && buffer);
-   assert(source);
 
    buffer->renderer = renderer;
 
@@ -538,8 +546,6 @@ vl_mc_init_buffer(struct vl_mc *renderer, struct vl_mc_buffer *buffer,
    buffer->fb_state.nr_cbufs = 1;
    buffer->fb_state.zsbuf = NULL;
 
-   pipe_sampler_view_reference(&buffer->source, source);
-
    return true;
 }
 
@@ -547,8 +553,6 @@ void
 vl_mc_cleanup_buffer(struct vl_mc_buffer *buffer)
 {
    assert(buffer);
-
-   pipe_sampler_view_reference(&buffer->source, NULL);
 }
 
 void
@@ -567,7 +571,7 @@ vl_mc_set_surface(struct vl_mc_buffer *buffer, struct pipe_surface *surface)
 }
 
 static void
-prepare_pipe_4_rendering(struct vl_mc_buffer *buffer)
+prepare_pipe_4_rendering(struct vl_mc_buffer *buffer, unsigned mask)
 {
    struct vl_mc *renderer;
 
@@ -577,11 +581,9 @@ prepare_pipe_4_rendering(struct vl_mc_buffer *buffer)
    renderer->pipe->bind_rasterizer_state(renderer->pipe, renderer->rs_state);
 
    if (buffer->surface_cleared)
-      renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_add);
-   else {
-      renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_clear);
-      buffer->surface_cleared = true;
-   }
+      renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_add[mask]);
+   else
+      renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_clear[mask]);
 
    renderer->pipe->set_framebuffer_state(renderer->pipe, &buffer->fb_state);
    renderer->pipe->set_viewport_state(renderer->pipe, &buffer->viewport);
@@ -594,7 +596,7 @@ vl_mc_render_ref(struct vl_mc_buffer *buffer, struct pipe_sampler_view *ref)
 
    assert(buffer && ref);
 
-   prepare_pipe_4_rendering(buffer);
+   prepare_pipe_4_rendering(buffer, PIPE_MASK_R | PIPE_MASK_G | PIPE_MASK_B);
 
    renderer = buffer->renderer;
 
@@ -607,10 +609,13 @@ vl_mc_render_ref(struct vl_mc_buffer *buffer, struct pipe_sampler_view *ref)
    util_draw_arrays_instanced(renderer->pipe, PIPE_PRIM_QUADS, 0, 4, 0,
                               renderer->buffer_width / MACROBLOCK_WIDTH *
                               renderer->buffer_height / MACROBLOCK_HEIGHT);
+
+   buffer->surface_cleared = true;
 }
 
 void
-vl_mc_render_ycbcr(struct vl_mc_buffer *buffer, unsigned num_instances)
+vl_mc_render_ycbcr(struct vl_mc_buffer *buffer, struct pipe_sampler_view *source,
+                   unsigned component, unsigned num_instances)
 {
    struct vl_mc *renderer;
 
@@ -619,14 +624,14 @@ vl_mc_render_ycbcr(struct vl_mc_buffer *buffer, unsigned num_instances)
    if (num_instances == 0)
       return;
 
-   prepare_pipe_4_rendering(buffer);
+   prepare_pipe_4_rendering(buffer, 1 << component);
 
    renderer = buffer->renderer;
 
    renderer->pipe->bind_vs_state(renderer->pipe, renderer->vs_ycbcr);
    renderer->pipe->bind_fs_state(renderer->pipe, renderer->fs_ycbcr);
 
-   renderer->pipe->set_fragment_sampler_views(renderer->pipe, 1, &buffer->source);
+   renderer->pipe->set_fragment_sampler_views(renderer->pipe, 1, &source);
    renderer->pipe->bind_fragment_sampler_states(renderer->pipe, 1, &renderer->sampler_ycbcr);
 
    util_draw_arrays_instanced(renderer->pipe, PIPE_PRIM_QUADS, 0, 4, 0, num_instances);
diff --git a/src/gallium/auxiliary/vl/vl_mc.h b/src/gallium/auxiliary/vl/vl_mc.h
index bc2b0e7f149..353afa9df62 100644
--- a/src/gallium/auxiliary/vl/vl_mc.h
+++ b/src/gallium/auxiliary/vl/vl_mc.h
@@ -31,8 +31,11 @@
 #include <pipe/p_state.h>
 #include <pipe/p_video_state.h>
 
+#include "vl_defines.h"
 #include "vl_types.h"
 
+#define VL_MC_NUM_BLENDERS (1 << VL_MAX_PLANES)
+
 struct pipe_context;
 
 struct vl_mc
@@ -44,7 +47,8 @@ struct vl_mc
 
    void *rs_state;
 
-   void *blend_clear, *blend_add;
+   void *blend_clear[VL_MC_NUM_BLENDERS];
+   void *blend_add[VL_MC_NUM_BLENDERS];
    void *vs_ref, *vs_ycbcr;
    void *fs_ref, *fs_ycbcr;
    void *sampler_ref, *sampler_ycbcr;
@@ -58,8 +62,6 @@ struct vl_mc_buffer
 
    struct pipe_viewport_state viewport;
    struct pipe_framebuffer_state fb_state;
-
-   struct pipe_sampler_view *source;
 };
 
 bool vl_mc_init(struct vl_mc *renderer, struct pipe_context *pipe,
@@ -68,8 +70,7 @@ bool vl_mc_init(struct vl_mc *renderer, struct pipe_context *pipe,
 
 void vl_mc_cleanup(struct vl_mc *renderer);
 
-bool vl_mc_init_buffer(struct vl_mc *renderer, struct vl_mc_buffer *buffer,
-                       struct pipe_sampler_view *source);
+bool vl_mc_init_buffer(struct vl_mc *renderer, struct vl_mc_buffer *buffer);
 
 void vl_mc_cleanup_buffer(struct vl_mc_buffer *buffer);
 
@@ -77,6 +78,7 @@ void vl_mc_set_surface(struct vl_mc_buffer *buffer, struct pipe_surface *surface
 
 void vl_mc_render_ref(struct vl_mc_buffer *buffer, struct pipe_sampler_view *ref);
 
-void vl_mc_render_ycbcr(struct vl_mc_buffer *buffer, unsigned num_instances);
+void vl_mc_render_ycbcr(struct vl_mc_buffer *buffer, struct pipe_sampler_view *source,
+                        unsigned component, unsigned num_instances);
 
 #endif /* vl_mc_h */
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
index 5027db4314e..296f46aba52 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
@@ -97,7 +97,7 @@ init_zscan_buffer(struct vl_mpeg12_buffer *buffer)
    if (!buffer->zscan_source)
       goto error_source;
 
-   source = buffer->zscan_source->get_sampler_views(buffer->zscan_source);
+   source = buffer->zscan_source->get_sampler_view_planes(buffer->zscan_source);
    if (!source)
       goto error_sampler;
 
@@ -174,11 +174,11 @@ init_idct_buffer(struct vl_mpeg12_buffer *buffer)
    if (!buffer->idct_intermediate)
       goto error_intermediate;
 
-   idct_source_sv = buffer->idct_source->get_sampler_views(buffer->idct_source);
+   idct_source_sv = buffer->idct_source->get_sampler_view_planes(buffer->idct_source);
    if (!idct_source_sv)
       goto error_source_sv;
 
-   idct_intermediate_sv = buffer->idct_intermediate->get_sampler_views(buffer->idct_intermediate);
+   idct_intermediate_sv = buffer->idct_intermediate->get_sampler_view_planes(buffer->idct_intermediate);
    if (!idct_intermediate_sv)
       goto error_intermediate_sv;
 
@@ -231,7 +231,6 @@ init_mc_buffer(struct vl_mpeg12_buffer *buf)
 {
    struct vl_mpeg12_decoder *dec;
    enum pipe_format formats[3];
-   struct pipe_sampler_view **mc_source_sv;
 
    assert(buf);
 
@@ -247,17 +246,13 @@ init_mc_buffer(struct vl_mpeg12_buffer *buf)
    if (!buf->mc_source)
       goto error_mc_source;
 
-   mc_source_sv = buf->mc_source->get_sampler_views(buf->mc_source);
-   if (!mc_source_sv)
-      goto error_mc_source_sv;
-
-   if(!vl_mc_init_buffer(&dec->mc_y, &buf->mc[0], mc_source_sv[0]))
+   if(!vl_mc_init_buffer(&dec->mc_y, &buf->mc[0]))
       goto error_mc_y;
 
-   if(!vl_mc_init_buffer(&dec->mc_c, &buf->mc[1], mc_source_sv[1]))
+   if(!vl_mc_init_buffer(&dec->mc_c, &buf->mc[1]))
       goto error_mc_cb;
 
-   if(!vl_mc_init_buffer(&dec->mc_c, &buf->mc[2], mc_source_sv[2]))
+   if(!vl_mc_init_buffer(&dec->mc_c, &buf->mc[2]))
       goto error_mc_cr;
 
    return true;
@@ -269,7 +264,6 @@ error_mc_cb:
    vl_mc_cleanup_buffer(&buf->mc[0]);
 
 error_mc_y:
-error_mc_source_sv:
    buf->mc_source->destroy(buf->mc_source);
 
 error_mc_source:
@@ -328,7 +322,7 @@ vl_mpeg12_buffer_map(struct pipe_video_decode_buffer *buffer)
 
    vl_vb_map(&buf->vertex_stream, dec->pipe);
 
-   sampler_views = buf->zscan_source->get_sampler_views(buf->zscan_source);
+   sampler_views = buf->zscan_source->get_sampler_view_planes(buf->zscan_source);
 
    assert(sampler_views);
 
@@ -510,12 +504,13 @@ vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer *)buffer;
    struct vl_mpeg12_decoder *dec;
 
-   struct pipe_sampler_view **sv[2];
+   struct pipe_sampler_view **sv[VL_MAX_REF_FRAMES], **mc_source_sv;
    struct pipe_surface **surfaces;
 
    struct pipe_vertex_buffer vb[3];
 
-   unsigned i, j;
+   unsigned i, j, component;
+   unsigned nr_components;
 
    assert(buf);
 
@@ -523,19 +518,21 @@ vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
    assert(dec);
 
    for (i = 0; i < 2; ++i)
-      sv[i] = refs[i] ? refs[i]->get_sampler_views(refs[i]) : NULL;
-
-   surfaces = dst->get_surfaces(dst);
+      sv[i] = refs[i] ? refs[i]->get_sampler_view_planes(refs[i]) : NULL;
 
    vb[0] = dec->quads;
    vb[1] = dec->pos;
 
+   surfaces = dst->get_surfaces(dst);
+
    dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves_mv);
    for (i = 0; i < VL_MAX_PLANES; ++i) {
+      if (!surfaces[i]) continue;
+
       vl_mc_set_surface(&buf->mc[i], surfaces[i]);
 
-      for (j = 0; j < 2; ++j) {
-         if (sv[j] == NULL) continue;
+      for (j = 0; j < VL_MAX_REF_FRAMES; ++j) {
+         if (!sv[j]) continue;
 
          vb[2] = vl_vb_get_mv(&buf->vertex_stream, j);;
          dec->pipe->set_vertex_buffers(dec->pipe, 3, vb);
@@ -546,7 +543,7 @@ vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
 
    dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves_ycbcr);
    for (i = 0; i < VL_MAX_PLANES; ++i) {
-      if (num_ycbcr_blocks[i] == 0) continue;
+      if (!num_ycbcr_blocks[i]) continue;
 
       vb[1] = vl_vb_get_ycbcr(&buf->vertex_stream, i);
       dec->pipe->set_vertex_buffers(dec->pipe, 2, vb);
@@ -555,8 +552,20 @@ vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
 
       if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
          vl_idct_flush(i == 0 ? &dec->idct_y : &dec->idct_c, &buf->idct[i], num_ycbcr_blocks[i]);
+   }
+
+   mc_source_sv = buf->mc_source->get_sampler_view_planes(buf->mc_source);
+   for (i = 0, component = 0; i < VL_MAX_PLANES; ++i) {
+      if (!surfaces[i]) continue;
 
-      vl_mc_render_ycbcr(&buf->mc[i], num_ycbcr_blocks[i]);
+      nr_components = util_format_get_nr_components(surfaces[i]->texture->format);
+      for (j = 0; j < nr_components; ++j, ++component) {
+         if (!num_ycbcr_blocks[i]) continue;
+
+         vb[1] = vl_vb_get_ycbcr(&buf->vertex_stream, component);
+         dec->pipe->set_vertex_buffers(dec->pipe, 2, vb);
+         vl_mc_render_ycbcr(&buf->mc[i], mc_source_sv[component], j, num_ycbcr_blocks[component]);
+      }
    }
 
    dec->pipe->flush(dec->pipe, fence);
diff --git a/src/gallium/auxiliary/vl/vl_video_buffer.c b/src/gallium/auxiliary/vl/vl_video_buffer.c
index dad8dd2c9ae..dccd7e93945 100644
--- a/src/gallium/auxiliary/vl/vl_video_buffer.c
+++ b/src/gallium/auxiliary/vl/vl_video_buffer.c
@@ -38,17 +38,6 @@
 
 #include "vl_video_buffer.h"
 
-static inline void
-adjust_swizzle(struct pipe_sampler_view *sv_templ)
-{
-   if (util_format_get_nr_components(sv_templ->format) == 1) {
-      sv_templ->swizzle_r = PIPE_SWIZZLE_RED;
-      sv_templ->swizzle_g = PIPE_SWIZZLE_RED;
-      sv_templ->swizzle_b = PIPE_SWIZZLE_RED;
-      sv_templ->swizzle_a = PIPE_SWIZZLE_RED;
-   }
-}
-
 static void
 vl_video_buffer_destroy(struct pipe_video_buffer *buffer)
 {
@@ -59,13 +48,14 @@ vl_video_buffer_destroy(struct pipe_video_buffer *buffer)
 
    for (i = 0; i < VL_MAX_PLANES; ++i) {
       pipe_surface_reference(&buf->surfaces[i], NULL);
-      pipe_sampler_view_reference(&buf->sampler_views[i], NULL);
+      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
+      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
       pipe_resource_reference(&buf->resources[i], NULL);
    }
 }
 
 static struct pipe_sampler_view **
-vl_video_buffer_sampler_views(struct pipe_video_buffer *buffer)
+vl_video_buffer_sampler_view_planes(struct pipe_video_buffer *buffer)
 {
    struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
    struct pipe_sampler_view sv_templ;
@@ -77,21 +67,63 @@ vl_video_buffer_sampler_views(struct pipe_video_buffer *buffer)
    pipe = buf->pipe;
 
    for (i = 0; i < buf->num_planes; ++i ) {
-      if (!buf->sampler_views[i]) {
+      if (!buf->sampler_view_planes[i]) {
          memset(&sv_templ, 0, sizeof(sv_templ));
          u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
-         adjust_swizzle(&sv_templ);
-         buf->sampler_views[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
-         if (!buf->sampler_views[i])
+
+         if (util_format_get_nr_components(buf->resources[i]->format) == 1)
+            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = sv_templ.swizzle_a = PIPE_SWIZZLE_RED;
+
+         buf->sampler_view_planes[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
+         if (!buf->sampler_view_planes[i])
             goto error;
       }
    }
 
-   return buf->sampler_views;
+   return buf->sampler_view_planes;
 
 error:
    for (i = 0; i < buf->num_planes; ++i )
-      pipe_sampler_view_reference(&buf->sampler_views[i], NULL);
+      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
+
+   return NULL;
+}
+
+static struct pipe_sampler_view **
+vl_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
+{
+   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
+   struct pipe_sampler_view sv_templ;
+   struct pipe_context *pipe;
+   unsigned i, j, component;
+
+   assert(buf);
+
+   pipe = buf->pipe;
+
+   for (component = 0, i = 0; i < buf->num_planes; ++i ) {
+      unsigned nr_components = util_format_get_nr_components(buf->resources[i]->format);
+
+      for (j = 0; j < nr_components; ++j, ++component) {
+         assert(component < VL_MAX_PLANES);
+
+         if (!buf->sampler_view_components[component]) {
+            memset(&sv_templ, 0, sizeof(sv_templ));
+            u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
+            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
+            sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
+            buf->sampler_view_components[component] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
+            if (!buf->sampler_view_components[component])
+               goto error;
+         }
+      }
+   }
+
+   return buf->sampler_view_components;
+
+error:
+   for (i = 0; i < VL_MAX_PLANES; ++i )
+      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
 
    return NULL;
 }
@@ -145,7 +177,8 @@ vl_video_buffer_init(struct pipe_video_context *context,
    buffer = CALLOC_STRUCT(vl_video_buffer);
 
    buffer->base.destroy = vl_video_buffer_destroy;
-   buffer->base.get_sampler_views = vl_video_buffer_sampler_views;
+   buffer->base.get_sampler_view_planes = vl_video_buffer_sampler_view_planes;
+   buffer->base.get_sampler_view_components = vl_video_buffer_sampler_view_components;
    buffer->base.get_surfaces = vl_video_buffer_surfaces;
    buffer->pipe = pipe;
    buffer->num_planes = 1;
diff --git a/src/gallium/auxiliary/vl/vl_video_buffer.h b/src/gallium/auxiliary/vl/vl_video_buffer.h
index 960acd28060..2dca74f641e 100644
--- a/src/gallium/auxiliary/vl/vl_video_buffer.h
+++ b/src/gallium/auxiliary/vl/vl_video_buffer.h
@@ -44,7 +44,8 @@ struct vl_video_buffer
    struct pipe_context      *pipe;
    unsigned                 num_planes;
    struct pipe_resource     *resources[VL_MAX_PLANES];
-   struct pipe_sampler_view *sampler_views[VL_MAX_PLANES];
+   struct pipe_sampler_view *sampler_view_planes[VL_MAX_PLANES];
+   struct pipe_sampler_view *sampler_view_components[VL_MAX_PLANES];
    struct pipe_surface      *surfaces[VL_MAX_PLANES];
 };