mesa/st: add ARB_texture_view support

Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>

6 files changed, 105 insertions, 18 deletions

diff --git a/src/mesa/state_tracker/st_atom_texture.c b/src/mesa/state_tracker/st_atom_texture.c
index 03d05932a24..ed9a44429b4 100644
--- a/src/mesa/state_tracker/st_atom_texture.c
+++ b/src/mesa/state_tracker/st_atom_texture.c
@@ -192,9 +192,9 @@ get_texture_format_swizzle(const struct st_texture_object *stObj)
    return swizzle_swizzle(stObj->base._Swizzle, tex_swizzle);
 }
 
-                            
+
 /**
- * Return TRUE if the texture's sampler view swizzle is equal to
+ * Return TRUE if the texture's sampler view swizzle is not equal to
  * the texture's swizzle.
  *
  * \param stObj  the st texture object,
@@ -214,9 +214,20 @@ check_sampler_swizzle(const struct st_texture_object *stObj,
 
 static unsigned last_level(struct st_texture_object *stObj)
 {
-   return MIN2(stObj->base._MaxLevel, stObj->pt->last_level);
+   unsigned ret = MIN2(stObj->base.MinLevel + stObj->base._MaxLevel,
+                       stObj->pt->last_level);
+   if (stObj->base.Immutable)
+      ret = MIN2(ret, stObj->base.MinLevel + stObj->base.NumLevels - 1);
+   return ret;
 }
 
+static unsigned last_layer(struct st_texture_object *stObj)
+{
+   if (stObj->base.Immutable)
+      return MIN2(stObj->base.MinLayer + stObj->base.NumLayers - 1,
+                  stObj->pt->array_size - 1);
+   return stObj->pt->array_size - 1;
+}
 
 static struct pipe_sampler_view *
 st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
@@ -249,9 +260,13 @@ st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
       templ.u.buf.first_element = f;
       templ.u.buf.last_element  = f + (n - 1);
    } else {
-      templ.u.tex.first_level = stObj->base.BaseLevel;
+      templ.u.tex.first_level = stObj->base.MinLevel + stObj->base.BaseLevel;
       templ.u.tex.last_level = last_level(stObj);
       assert(templ.u.tex.first_level <= templ.u.tex.last_level);
+      templ.u.tex.first_layer = stObj->base.MinLayer;
+      templ.u.tex.last_layer = last_layer(stObj);
+      assert(templ.u.tex.first_layer <= templ.u.tex.last_layer);
+      templ.target = gl_target_to_pipe(stObj->base.Target);
    }
 
    if (swizzle != SWIZZLE_NOOP) {
@@ -287,8 +302,11 @@ st_get_texture_sampler_view_from_stobj(struct st_context *st,
    if (*sv) {
       if (check_sampler_swizzle(stObj, *sv) ||
 	  (format != (*sv)->format) ||
-          stObj->base.BaseLevel != (*sv)->u.tex.first_level ||
-          last_level(stObj) != (*sv)->u.tex.last_level) {
+          gl_target_to_pipe(stObj->base.Target) != (*sv)->target ||
+          stObj->base.MinLevel + stObj->base.BaseLevel != (*sv)->u.tex.first_level ||
+          last_level(stObj) != (*sv)->u.tex.last_level ||
+          stObj->base.MinLayer != (*sv)->u.tex.first_layer ||
+          last_layer(stObj) != (*sv)->u.tex.last_layer) {
 	 pipe_sampler_view_reference(sv, NULL);
       }
    }
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c
index 7cfd3dadefa..470ab278b4b 100644
--- a/src/mesa/state_tracker/st_cb_fbo.c
+++ b/src/mesa/state_tracker/st_cb_fbo.c
@@ -450,6 +450,16 @@ st_update_renderbuffer_surface(struct st_context *st,
       last_layer = strb->rtt_face + strb->rtt_slice;
    }
 
+   /* Adjust for texture views */
+   if (strb->is_rtt) {
+      struct gl_texture_object *tex = strb->Base.TexImage->TexObject;
+      first_layer += tex->MinLayer;
+      if (!strb->rtt_layered)
+         last_layer += tex->MinLayer;
+      else
+         last_layer = MIN2(first_layer + tex->NumLayers - 1, last_layer);
+   }
+
    if (!strb->surface ||
        strb->surface->texture->nr_samples != strb->Base.NumSamples ||
        strb->surface->format != format ||
diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index ad14bd939d7..dfa188a3f5c 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -829,12 +829,12 @@ st_TexSubImage(struct gl_context *ctx, GLuint dims,
    blit.src.level = 0;
    blit.src.format = src_format;
    blit.dst.resource = dst;
-   blit.dst.level = stObj->pt != stImage->pt ? 0 : texImage->Level;
+   blit.dst.level = stObj->pt != stImage->pt ? 0 : texImage->TexObject->MinLevel + texImage->Level;
    blit.dst.format = dst_format;
    blit.src.box.x = blit.src.box.y = blit.src.box.z = 0;
    blit.dst.box.x = xoffset;
    blit.dst.box.y = yoffset;
-   blit.dst.box.z = zoffset + texImage->Face;
+   blit.dst.box.z = zoffset + texImage->Face + texImage->TexObject->MinLayer;
    blit.src.box.width = blit.dst.box.width = width;
    blit.src.box.height = blit.dst.box.height = height;
    blit.src.box.depth = blit.dst.box.depth = depth;
@@ -916,7 +916,8 @@ st_GetTexImage(struct gl_context * ctx,
    GLuint height = texImage->Height;
    GLuint depth = texImage->Depth;
    struct st_texture_image *stImage = st_texture_image(texImage);
-   struct pipe_resource *src = st_texture_object(texImage->TexObject)->pt;
+   struct st_texture_object *stObj = st_texture_object(texImage->TexObject);
+   struct pipe_resource *src = stObj->pt;
    struct pipe_resource *dst = NULL;
    struct pipe_resource dst_templ;
    enum pipe_format dst_format, src_format;
@@ -970,7 +971,10 @@ st_GetTexImage(struct gl_context * ctx,
     * - Luminance alpha must be returned as (L,0,0,A).
     * - Intensity must be returned as (I,0,0,1)
     */
-   src_format = util_format_linear(src->format);
+   if (stObj->surface_based)
+      src_format = util_format_linear(stObj->surface_format);
+   else
+      src_format = util_format_linear(src->format);
    src_format = util_format_luminance_to_red(src_format);
    src_format = util_format_intensity_to_red(src_format);
 
@@ -1069,14 +1073,14 @@ st_GetTexImage(struct gl_context * ctx,
 
    memset(&blit, 0, sizeof(blit));
    blit.src.resource = src;
-   blit.src.level = texImage->Level;
+   blit.src.level = texImage->Level + texImage->TexObject->MinLevel;
    blit.src.format = src_format;
    blit.dst.resource = dst;
    blit.dst.level = 0;
    blit.dst.format = dst->format;
    blit.src.box.x = blit.dst.box.x = 0;
    blit.src.box.y = blit.dst.box.y = 0;
-   blit.src.box.z = texImage->Face;
+   blit.src.box.z = texImage->Face + texImage->TexObject->MinLayer;
    blit.dst.box.z = 0;
    blit.src.box.width = blit.dst.box.width = width;
    blit.src.box.height = blit.dst.box.height = height;
@@ -1441,10 +1445,10 @@ st_CopyTexSubImage(struct gl_context *ctx, GLuint dims,
    blit.src.box.depth = 1;
    blit.dst.resource = stImage->pt;
    blit.dst.format = dst_format;
-   blit.dst.level = stObj->pt != stImage->pt ? 0 : texImage->Level;
+   blit.dst.level = stObj->pt != stImage->pt ? 0 : texImage->Level + texImage->TexObject->MinLevel;
    blit.dst.box.x = destX;
    blit.dst.box.y = destY;
-   blit.dst.box.z = stImage->base.Face + slice;
+   blit.dst.box.z = stImage->base.Face + slice + texImage->TexObject->MinLayer;
    blit.dst.box.width = width;
    blit.dst.box.height = height;
    blit.dst.box.depth = 1;
@@ -1545,6 +1549,9 @@ st_finalize_texture(struct gl_context *ctx,
    enum pipe_format firstImageFormat;
    GLuint ptWidth, ptHeight, ptDepth, ptLayers, ptNumSamples;
 
+   if (tObj->Immutable)
+      return GL_TRUE;
+
    if (_mesa_is_texture_complete(tObj, &tObj->Sampler)) {
       /* The texture is complete and we know exactly how many mipmap levels
        * are present/needed.  This is conditional because we may be called
@@ -1824,6 +1831,44 @@ st_TestProxyTexImage(struct gl_context *ctx, GLenum target,
    }
 }
 
+static GLboolean
+st_TextureView(struct gl_context *ctx,
+               struct gl_texture_object *texObj,
+               struct gl_texture_object *origTexObj)
+{
+   struct st_texture_object *orig = st_texture_object(origTexObj);
+   struct st_texture_object *tex = st_texture_object(texObj);
+   struct gl_texture_image *image = texObj->Image[0][0];
+
+   const int numFaces = _mesa_num_tex_faces(texObj->Target);
+   const int numLevels = texObj->NumLevels;
+
+   int face;
+   int level;
+
+   pipe_resource_reference(&tex->pt, orig->pt);
+
+   /* Set image resource pointers */
+   for (level = 0; level < numLevels; level++) {
+      for (face = 0; face < numFaces; face++) {
+         struct st_texture_image *stImage =
+            st_texture_image(texObj->Image[face][level]);
+         pipe_resource_reference(&stImage->pt, tex->pt);
+      }
+   }
+
+   tex->surface_based = GL_TRUE;
+   tex->surface_format =
+      st_mesa_format_to_pipe_format(st_context(ctx), image->TexFormat);
+
+   tex->width0 = image->Width;
+   tex->height0 = image->Height;
+   tex->depth0 = image->Depth;
+   tex->lastLevel = numLevels - 1;
+
+   return GL_TRUE;
+}
+
 
 void
 st_init_texture_functions(struct dd_function_table *functions)
@@ -1855,4 +1900,5 @@ st_init_texture_functions(struct dd_function_table *functions)
    functions->TestProxyTexImage = st_TestProxyTexImage;
 
    functions->AllocTextureStorage = st_AllocTextureStorage;
+   functions->TextureView = st_TextureView;
 }
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 07bd1256743..c7bc0ca5009 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -463,6 +463,7 @@ void st_init_extensions(struct pipe_screen *screen,
       { o(ARB_draw_indirect),                PIPE_CAP_DRAW_INDIRECT                    },
       { o(ARB_derivative_control),           PIPE_CAP_TGSI_FS_FINE_DERIVATIVE          },
       { o(ARB_conditional_render_inverted),  PIPE_CAP_CONDITIONAL_RENDER_INVERTED      },
+      { o(ARB_texture_view),                 PIPE_CAP_SAMPLER_VIEW_TARGET              },
    };
 
    /* Required: render target and sampler support */
diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index b5e03b0f81a..531bc654fba 100644
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -879,6 +879,7 @@ struct format_mapping
 
 #define DEFAULT_SRGBA_FORMATS \
       PIPE_FORMAT_B8G8R8A8_SRGB, \
+      PIPE_FORMAT_R8G8B8A8_SRGB, \
       PIPE_FORMAT_A8R8G8B8_SRGB, \
       PIPE_FORMAT_A8B8G8R8_SRGB, \
       0
@@ -919,11 +920,11 @@ static const struct format_mapping format_map[] = {
    },
    {
       { 4, GL_RGBA, GL_RGBA8, 0 },
-      { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
+      { DEFAULT_RGBA_FORMATS }
    },
    {
       { GL_BGRA, 0 },
-      { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }
+      { DEFAULT_RGBA_FORMATS }
    },
    {
       { 3, GL_RGB, GL_RGB8, 0 },
diff --git a/src/mesa/state_tracker/st_texture.c b/src/mesa/state_tracker/st_texture.c
index af9b7675f10..c84aa4566b2 100644
--- a/src/mesa/state_tracker/st_texture.c
+++ b/src/mesa/state_tracker/st_texture.c
@@ -260,6 +260,12 @@ st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
    else
       level = stImage->base.Level;
 
+   if (stObj->base.Immutable) {
+      level += stObj->base.MinLevel;
+      z += stObj->base.MinLayer;
+      d = MIN2(d, stObj->base.NumLayers);
+   }
+
    z += stImage->base.Face;
 
    map = pipe_transfer_map_3d(st->pipe, stImage->pt, level, usage,
@@ -289,8 +295,13 @@ st_texture_image_unmap(struct st_context *st,
                        struct st_texture_image *stImage, unsigned slice)
 {
    struct pipe_context *pipe = st->pipe;
-   struct pipe_transfer **transfer =
-      &stImage->transfer[slice + stImage->base.Face].transfer;
+   struct st_texture_object *stObj =
+      st_texture_object(stImage->base.TexObject);
+   struct pipe_transfer **transfer;
+
+   if (stObj->base.Immutable)
+      slice += stObj->base.MinLayer;
+   transfer = &stImage->transfer[slice + stImage->base.Face].transfer;
 
    DBG("%s\n", __FUNCTION__);