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-rw-r--r--src/mesa/drivers/dri/i965/brw_blorp.cpp1
-rw-r--r--src/mesa/drivers/dri/i965/brw_blorp.h5
-rw-r--r--src/mesa/drivers/dri/i965/brw_tex_layout.c10
-rw-r--r--src/mesa/drivers/dri/i965/brw_wm_surface_state.c3
-rw-r--r--src/mesa/drivers/dri/i965/gen7_blorp.cpp2
-rw-r--r--src/mesa/drivers/dri/i965/gen7_wm_surface_state.c10
-rw-r--r--src/mesa/drivers/dri/intel/intel_mipmap_tree.c160
-rw-r--r--src/mesa/drivers/dri/intel/intel_mipmap_tree.h23
-rw-r--r--src/mesa/drivers/dri/intel/intel_tex_image.c3
-rw-r--r--src/mesa/drivers/dri/intel/intel_tex_validate.c3
10 files changed, 162 insertions, 58 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_blorp.cpp b/src/mesa/drivers/dri/i965/brw_blorp.cpp
index d80e4f15405..09b176b57ac 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/brw_blorp.cpp
@@ -58,6 +58,7 @@ brw_blorp_surface_info::set(struct intel_mipmap_tree *mt,
{
brw_blorp_mip_info::set(mt, level, layer);
this->num_samples = mt->num_samples;
+ this->array_spacing_lod0 = mt->array_spacing_lod0;
if (mt->format == MESA_FORMAT_S8) {
/* The miptree is a W-tiled stencil buffer. Surface states can't be set
diff --git a/src/mesa/drivers/dri/i965/brw_blorp.h b/src/mesa/drivers/dri/i965/brw_blorp.h
index 6af5f67683d..f4aafd77825 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.h
+++ b/src/mesa/drivers/dri/i965/brw_blorp.h
@@ -85,6 +85,11 @@ public:
bool map_stencil_as_y_tiled;
unsigned num_samples;
+
+ /* Setting this flag indicates that the surface should be set up in
+ * ARYSPC_LOD0 mode. Ignored prior to Gen7.
+ */
+ bool array_spacing_lod0;
};
diff --git a/src/mesa/drivers/dri/i965/brw_tex_layout.c b/src/mesa/drivers/dri/i965/brw_tex_layout.c
index 8bf1d3ddbcd..f7421318c21 100644
--- a/src/mesa/drivers/dri/i965/brw_tex_layout.c
+++ b/src/mesa/drivers/dri/i965/brw_tex_layout.c
@@ -49,7 +49,10 @@ brw_miptree_layout_texture_array(struct intel_context *intel,
h0 = ALIGN(mt->height0, mt->align_h);
h1 = ALIGN(minify(mt->height0), mt->align_h);
- qpitch = (h0 + h1 + (intel->gen >= 7 ? 12 : 11) * mt->align_h);
+ if (mt->array_spacing_lod0)
+ qpitch = h0;
+ else
+ qpitch = (h0 + h1 + (intel->gen >= 7 ? 12 : 11) * mt->align_h);
if (mt->compressed)
qpitch /= 4;
@@ -165,7 +168,10 @@ brw_miptree_layout(struct intel_context *intel, struct intel_mipmap_tree *mt)
break;
default:
- i945_miptree_layout_2d(mt);
+ if (mt->num_samples > 0 && !mt->msaa_is_interleaved)
+ brw_miptree_layout_texture_array(intel, mt);
+ else
+ i945_miptree_layout_2d(mt);
break;
}
DBG("%s: %dx%dx%d\n", __FUNCTION__,
diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index 849da852277..6e745cf71ab 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -955,7 +955,8 @@ brw_update_renderbuffer_surface(struct brw_context *brw,
intel_image->base.Base.Level,
width, height, depth,
true,
- 0 /* num_samples */);
+ 0 /* num_samples */,
+ false /* msaa_is_interleaved */);
intel_miptree_copy_teximage(intel, intel_image, new_mt);
intel_miptree_reference(&irb->mt, intel_image->mt);
diff --git a/src/mesa/drivers/dri/i965/gen7_blorp.cpp b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
index 9e1aa4b8d94..58da3893d0a 100644
--- a/src/mesa/drivers/dri/i965/gen7_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
@@ -169,6 +169,8 @@ gen7_blorp_emit_surface_state(struct brw_context *brw,
surf->ss0.surface_format = format;
surf->ss0.surface_type = BRW_SURFACE_2D;
+ surf->ss0.surface_array_spacing = surface->array_spacing_lod0 ?
+ GEN7_SURFACE_ARYSPC_LOD0 : GEN7_SURFACE_ARYSPC_FULL;
/* reloc */
surf->ss1.base_addr = region->bo->offset; /* No tile offsets needed */
diff --git a/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c b/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
index 5aa62bddb1a..9a01ddf68af 100644
--- a/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
@@ -142,6 +142,10 @@ gen7_update_texture_surface(struct gl_context *ctx, GLuint unit)
return;
}
+ /* We don't support MSAA for textures. */
+ assert(!mt->array_spacing_lod0);
+ assert(mt->num_samples == 0);
+
intel_miptree_get_dimensions_for_image(firstImage, &width, &height, &depth);
surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
@@ -296,6 +300,9 @@ gen7_update_renderbuffer_surface(struct brw_context *brw,
sizeof(*surf), 32, &brw->wm.surf_offset[unit]);
memset(surf, 0, sizeof(*surf));
+ /* Render targets can't use MSAA interleaved layout */
+ assert(!irb->mt->msaa_is_interleaved);
+
if (irb->mt->align_h == 4)
surf->ss0.vertical_alignment = 1;
if (irb->mt->align_w == 8)
@@ -324,6 +331,9 @@ gen7_update_renderbuffer_surface(struct brw_context *brw,
}
surf->ss0.surface_type = BRW_SURFACE_2D;
+ surf->ss0.surface_array_spacing = irb->mt->array_spacing_lod0 ?
+ GEN7_SURFACE_ARYSPC_LOD0 : GEN7_SURFACE_ARYSPC_FULL;
+
/* reloc */
surf->ss1.base_addr = intel_renderbuffer_tile_offsets(irb, &tile_x, &tile_y);
surf->ss1.base_addr += region->bo->offset; /* reloc */
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 13e73969e6a..7018c3732bf 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -73,7 +73,8 @@ intel_miptree_create_internal(struct intel_context *intel,
GLuint height0,
GLuint depth0,
bool for_region,
- GLuint num_samples)
+ GLuint num_samples,
+ bool msaa_is_interleaved)
{
struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
int compress_byte = 0;
@@ -95,8 +96,14 @@ intel_miptree_create_internal(struct intel_context *intel,
mt->cpp = compress_byte ? compress_byte : _mesa_get_format_bytes(mt->format);
mt->num_samples = num_samples;
mt->compressed = compress_byte ? 1 : 0;
+ mt->msaa_is_interleaved = msaa_is_interleaved;
mt->refcount = 1;
+ /* array_spacing_lod0 is only used for non-interleaved MSAA surfaces.
+ * TODO: can we use it elsewhere?
+ */
+ mt->array_spacing_lod0 = num_samples > 0 && !msaa_is_interleaved;
+
if (target == GL_TEXTURE_CUBE_MAP) {
assert(depth0 == 1);
mt->depth0 = 6;
@@ -109,6 +116,8 @@ intel_miptree_create_internal(struct intel_context *intel,
(intel->must_use_separate_stencil ||
(intel->has_separate_stencil &&
intel->vtbl.is_hiz_depth_format(intel, format)))) {
+ /* MSAA stencil surfaces are always interleaved. */
+ bool msaa_is_interleaved = num_samples > 0;
mt->stencil_mt = intel_miptree_create(intel,
mt->target,
MESA_FORMAT_S8,
@@ -118,7 +127,8 @@ intel_miptree_create_internal(struct intel_context *intel,
mt->height0,
mt->depth0,
true,
- num_samples);
+ num_samples,
+ msaa_is_interleaved);
if (!mt->stencil_mt) {
intel_miptree_release(&mt);
return NULL;
@@ -165,7 +175,8 @@ intel_miptree_create(struct intel_context *intel,
GLuint height0,
GLuint depth0,
bool expect_accelerated_upload,
- GLuint num_samples)
+ GLuint num_samples,
+ bool msaa_is_interleaved)
{
struct intel_mipmap_tree *mt;
uint32_t tiling = I915_TILING_NONE;
@@ -207,7 +218,7 @@ intel_miptree_create(struct intel_context *intel,
mt = intel_miptree_create_internal(intel, target, format,
first_level, last_level, width0,
height0, depth0,
- false, num_samples);
+ false, num_samples, msaa_is_interleaved);
/*
* pitch == 0 || height == 0 indicates the null texture
*/
@@ -243,7 +254,8 @@ intel_miptree_create_for_region(struct intel_context *intel,
mt = intel_miptree_create_internal(intel, target, format,
0, 0,
region->width, region->height, 1,
- true, 0 /* num_samples */);
+ true, 0 /* num_samples */,
+ false /* msaa_is_interleaved */);
if (!mt)
return mt;
@@ -252,6 +264,31 @@ intel_miptree_create_for_region(struct intel_context *intel,
return mt;
}
+/**
+ * Determine whether the MSAA surface being created should use an interleaved
+ * layout or a sliced layout, based on the chip generation and the surface
+ * type.
+ */
+static bool
+msaa_format_is_interleaved(struct intel_context *intel, gl_format format)
+{
+ /* Prior to Gen7, all surfaces used interleaved layout. */
+ if (intel->gen < 7)
+ return true;
+
+ /* In Gen7, interleaved layout is only used for depth and stencil
+ * buffers.
+ */
+ switch (_mesa_get_format_base_format(format)) {
+ case GL_DEPTH_COMPONENT:
+ case GL_STENCIL_INDEX:
+ case GL_DEPTH_STENCIL:
+ return true;
+ default:
+ return false;
+ }
+}
+
struct intel_mipmap_tree*
intel_miptree_create_for_renderbuffer(struct intel_context *intel,
gl_format format,
@@ -260,55 +297,71 @@ intel_miptree_create_for_renderbuffer(struct intel_context *intel,
uint32_t num_samples)
{
struct intel_mipmap_tree *mt;
-
- /* Adjust width/height for MSAA.
- *
- * In the Sandy Bridge PRM, volume 4, part 1, page 31, it says:
- *
- * "Any of the other messages (sample*, LOD, load4) used with a
- * (4x) multisampled surface will in-effect sample a surface with
- * double the height and width as that indicated in the surface
- * state. Each pixel position on the original-sized surface is
- * replaced with a 2x2 of samples with the following arrangement:
- *
- * sample 0 sample 2
- * sample 1 sample 3"
- *
- * Thus, when sampling from a multisampled texture, it behaves as though
- * the layout in memory for (x,y,sample) is:
- *
- * (0,0,0) (0,0,2) (1,0,0) (1,0,2)
- * (0,0,1) (0,0,3) (1,0,1) (1,0,3)
- *
- * (0,1,0) (0,1,2) (1,1,0) (1,1,2)
- * (0,1,1) (0,1,3) (1,1,1) (1,1,3)
- *
- * However, the actual layout of multisampled data in memory is:
- *
- * (0,0,0) (1,0,0) (0,0,1) (1,0,1)
- * (0,1,0) (1,1,0) (0,1,1) (1,1,1)
- *
- * (0,0,2) (1,0,2) (0,0,3) (1,0,3)
- * (0,1,2) (1,1,2) (0,1,3) (1,1,3)
- *
- * This pattern repeats for each 2x2 pixel block.
- *
- * As a result, when calculating the size of our 4-sample buffer for
- * an odd width or height, we have to align before scaling up because
- * sample 3 is in that bottom right 2x2 block.
- */
- if (num_samples > 4) {
- num_samples = 8;
- width = ALIGN(width, 2) * 4;
- height = ALIGN(height, 2) * 2;
- } else if (num_samples > 0) {
- num_samples = 4;
- width = ALIGN(width, 2) * 2;
- height = ALIGN(height, 2) * 2;
+ uint32_t depth = 1;
+ bool msaa_is_interleaved = false;
+
+ if (num_samples > 0) {
+ /* Adjust width/height/depth for MSAA */
+ msaa_is_interleaved = msaa_format_is_interleaved(intel, format);
+ if (msaa_is_interleaved) {
+ /* In the Sandy Bridge PRM, volume 4, part 1, page 31, it says:
+ *
+ * "Any of the other messages (sample*, LOD, load4) used with a
+ * (4x) multisampled surface will in-effect sample a surface with
+ * double the height and width as that indicated in the surface
+ * state. Each pixel position on the original-sized surface is
+ * replaced with a 2x2 of samples with the following arrangement:
+ *
+ * sample 0 sample 2
+ * sample 1 sample 3"
+ *
+ * Thus, when sampling from a multisampled texture, it behaves as
+ * though the layout in memory for (x,y,sample) is:
+ *
+ * (0,0,0) (0,0,2) (1,0,0) (1,0,2)
+ * (0,0,1) (0,0,3) (1,0,1) (1,0,3)
+ *
+ * (0,1,0) (0,1,2) (1,1,0) (1,1,2)
+ * (0,1,1) (0,1,3) (1,1,1) (1,1,3)
+ *
+ * However, the actual layout of multisampled data in memory is:
+ *
+ * (0,0,0) (1,0,0) (0,0,1) (1,0,1)
+ * (0,1,0) (1,1,0) (0,1,1) (1,1,1)
+ *
+ * (0,0,2) (1,0,2) (0,0,3) (1,0,3)
+ * (0,1,2) (1,1,2) (0,1,3) (1,1,3)
+ *
+ * This pattern repeats for each 2x2 pixel block.
+ *
+ * As a result, when calculating the size of our 4-sample buffer for
+ * an odd width or height, we have to align before scaling up because
+ * sample 3 is in that bottom right 2x2 block.
+ */
+ switch (num_samples) {
+ case 4:
+ width = ALIGN(width, 2) * 2;
+ height = ALIGN(height, 2) * 2;
+ break;
+ case 8:
+ width = ALIGN(width, 2) * 4;
+ height = ALIGN(height, 2) * 2;
+ break;
+ default:
+ /* num_samples should already have been quantized to 0, 4, or
+ * 8.
+ */
+ assert(false);
+ }
+ } else {
+ /* Non-interleaved */
+ depth = num_samples;
+ }
}
mt = intel_miptree_create(intel, GL_TEXTURE_2D, format, 0, 0,
- width, height, 1, true, num_samples);
+ width, height, depth, true, num_samples,
+ msaa_is_interleaved);
return mt;
}
@@ -582,6 +635,8 @@ intel_miptree_alloc_hiz(struct intel_context *intel,
GLuint num_samples)
{
assert(mt->hiz_mt == NULL);
+ /* MSAA HiZ surfaces are always interleaved. */
+ bool msaa_is_interleaved = num_samples > 0;
mt->hiz_mt = intel_miptree_create(intel,
mt->target,
MESA_FORMAT_X8_Z24,
@@ -591,7 +646,8 @@ intel_miptree_alloc_hiz(struct intel_context *intel,
mt->height0,
mt->depth0,
true,
- num_samples);
+ num_samples,
+ msaa_is_interleaved);
if (!mt->hiz_mt)
return false;
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.h b/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
index 7536065f227..5c57e02f031 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
@@ -172,6 +172,26 @@ struct intel_mipmap_tree
GLuint num_samples;
bool compressed;
+ /**
+ * For 1D array, 2D array, cube, and 2D multisampled surfaces on Gen7: true
+ * if the surface only contains LOD 0, and hence no space is for LOD's
+ * other than 0 in between array slices.
+ *
+ * Corresponds to the surface_array_spacing bit in gen7_surface_state.
+ */
+ bool array_spacing_lod0;
+
+ /**
+ * For MSAA buffers, there are two possible layouts:
+ * - Interleaved, in which the additional samples are accommodated
+ * by scaling up the width and height of the surface.
+ * - Sliced, in which the surface is stored as a 2D array, with
+ * array slice n containing all pixel data for sample n.
+ *
+ * This value is true if num_samples > 0 and the format is interleaved.
+ */
+ bool msaa_is_interleaved;
+
/* Derived from the above:
*/
GLuint total_width;
@@ -238,7 +258,8 @@ struct intel_mipmap_tree *intel_miptree_create(struct intel_context *intel,
GLuint height0,
GLuint depth0,
bool expect_accelerated_upload,
- GLuint num_samples);
+ GLuint num_samples,
+ bool msaa_is_interleaved);
struct intel_mipmap_tree *
intel_miptree_create_for_region(struct intel_context *intel,
diff --git a/src/mesa/drivers/dri/intel/intel_tex_image.c b/src/mesa/drivers/dri/intel/intel_tex_image.c
index 68f4ff4c9ed..abd75c51d29 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_image.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_image.c
@@ -100,7 +100,8 @@ intel_miptree_create_for_teximage(struct intel_context *intel,
height,
depth,
expect_accelerated_upload,
- 0 /* num_samples */);
+ 0 /* num_samples */,
+ false /* msaa_is_interleaved */);
}
/* There are actually quite a few combinations this will work for,
diff --git a/src/mesa/drivers/dri/intel/intel_tex_validate.c b/src/mesa/drivers/dri/intel/intel_tex_validate.c
index cadba29ff41..c2d7d67df54 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_validate.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_validate.c
@@ -87,7 +87,8 @@ intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
height,
depth,
true,
- 0 /* num_samples */);
+ 0 /* num_samples */,
+ false /* msaa_is_interleaved */);
if (!intelObj->mt)
return false;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 05:38:22 +0000