[Mesa-dev] [PATCH 2/2] radv: predicate cmask eliminate when using DCC.
Dave Airlie
airlied at gmail.com
Thu Jul 6 01:14:52 UTC 2017
From: Dave Airlie <airlied at redhat.com>
When using DCC some clear values don't require a cmask eliminate
step. This patch adds support for black and black with alpha 1,
there are other values, but I don't have access to a comprehensive list.
This works by setting the cmask eliminate predicate when doing the
fast clear, and later when doing the cmask elimination making sure
the draws are predicated.
This increases the fps on Sascha Willems deferred.
Tonga: 580fps->670fps on a Tonga PRO card.
Polaris 730->850fps
Signed-off-by: Dave Airlie <airlied at redhat.com>
---
src/amd/vulkan/radv_cmd_buffer.c | 29 ++++++++++++
src/amd/vulkan/radv_image.c | 13 ++++--
src/amd/vulkan/radv_meta_clear.c | 87 ++++++++++++++++++++++++++++++++++-
src/amd/vulkan/radv_meta_fast_clear.c | 22 +++++++++
src/amd/vulkan/radv_private.h | 4 ++
5 files changed, 150 insertions(+), 5 deletions(-)
diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index a257812..dd83fd0 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -1117,6 +1117,35 @@ radv_load_depth_clear_regs(struct radv_cmd_buffer *cmd_buffer,
radeon_emit(cmd_buffer->cs, 0);
}
+/*
+ *with DCC some colors don't require CMASK elimiation before being
+ * used as a texture. This sets a predicate value to determine if the
+ * cmask eliminate is required.
+ */
+void
+radv_set_dcc_need_cmask_elim_pred(struct radv_cmd_buffer *cmd_buffer,
+ struct radv_image *image,
+ bool value)
+{
+ uint64_t pred_val = value;
+ uint64_t va = cmd_buffer->device->ws->buffer_get_va(image->bo);
+ va += image->offset + image->dcc_pred_offset;
+
+ if (!image->surface.dcc_size)
+ return;
+
+ cmd_buffer->device->ws->cs_add_buffer(cmd_buffer->cs, image->bo, 8);
+
+ radeon_emit(cmd_buffer->cs, PKT3(PKT3_WRITE_DATA, 4, 0));
+ radeon_emit(cmd_buffer->cs, S_370_DST_SEL(V_370_MEM_ASYNC) |
+ S_370_WR_CONFIRM(1) |
+ S_370_ENGINE_SEL(V_370_PFP));
+ radeon_emit(cmd_buffer->cs, va);
+ radeon_emit(cmd_buffer->cs, va >> 32);
+ radeon_emit(cmd_buffer->cs, pred_val);
+ radeon_emit(cmd_buffer->cs, pred_val >> 32);
+}
+
void
radv_set_color_clear_regs(struct radv_cmd_buffer *cmd_buffer,
struct radv_image *image,
diff --git a/src/amd/vulkan/radv_image.c b/src/amd/vulkan/radv_image.c
index 147ebed..43112d0 100644
--- a/src/amd/vulkan/radv_image.c
+++ b/src/amd/vulkan/radv_image.c
@@ -705,12 +705,16 @@ static void
radv_image_alloc_cmask(struct radv_device *device,
struct radv_image *image)
{
+ uint32_t clear_value_size = 0;
radv_image_get_cmask_info(device, image, &image->cmask);
image->cmask.offset = align64(image->size, image->cmask.alignment);
/* + 8 for storing the clear values */
- image->clear_value_offset = image->cmask.offset + image->cmask.size;
- image->size = image->cmask.offset + image->cmask.size + 8;
+ if (!image->clear_value_offset) {
+ image->clear_value_offset = image->cmask.offset + image->cmask.size;
+ clear_value_size = 8;
+ }
+ image->size = image->cmask.offset + image->cmask.size + clear_value_size;
image->alignment = MAX2(image->alignment, image->cmask.alignment);
}
@@ -719,9 +723,10 @@ radv_image_alloc_dcc(struct radv_device *device,
struct radv_image *image)
{
image->dcc_offset = align64(image->size, image->surface.dcc_alignment);
- /* + 8 for storing the clear values */
+ /* + 16 for storing the clear values + dcc pred */
image->clear_value_offset = image->dcc_offset + image->surface.dcc_size;
- image->size = image->dcc_offset + image->surface.dcc_size + 8;
+ image->dcc_pred_offset = image->clear_value_offset + 8;
+ image->size = image->dcc_offset + image->surface.dcc_size + 16;
image->alignment = MAX2(image->alignment, image->surface.dcc_alignment);
}
diff --git a/src/amd/vulkan/radv_meta_clear.c b/src/amd/vulkan/radv_meta_clear.c
index 4480f42..d366ae3 100644
--- a/src/amd/vulkan/radv_meta_clear.c
+++ b/src/amd/vulkan/radv_meta_clear.c
@@ -858,6 +858,83 @@ fail:
return res;
}
+static void vi_get_fast_clear_parameters(VkFormat format,
+ const VkClearColorValue *clear_value,
+ uint32_t* reset_value,
+ bool *can_avoid_fast_clear_elim)
+{
+ bool values[4] = {};
+ int extra_channel;
+ bool main_value = false;
+ bool extra_value = false;
+ int i;
+ *can_avoid_fast_clear_elim = false;
+
+ *reset_value = 0x20202020U;
+
+ const struct vk_format_description *desc = vk_format_description(format);
+ if (format == VK_FORMAT_B10G11R11_UFLOAT_PACK32 ||
+ format == VK_FORMAT_R5G6B5_UNORM_PACK16 ||
+ format == VK_FORMAT_B5G6R5_UNORM_PACK16)
+ extra_channel = -1;
+ else if (desc->layout == VK_FORMAT_LAYOUT_PLAIN) {
+ if (radv_translate_colorswap(format, false) <= 1)
+ extra_channel = desc->nr_channels - 1;
+ else
+ extra_channel = 0;
+ } else
+ return;
+
+ for (i = 0; i < 4; i++) {
+ int index = desc->swizzle[i] - VK_SWIZZLE_X;
+ if (desc->swizzle[i] < VK_SWIZZLE_X ||
+ desc->swizzle[i] > VK_SWIZZLE_W)
+ continue;
+
+ if (desc->channel[i].pure_integer &&
+ desc->channel[i].type == VK_FORMAT_TYPE_SIGNED) {
+ /* Use the maximum value for clamping the clear color. */
+ int max = u_bit_consecutive(0, desc->channel[i].size - 1);
+
+ values[i] = clear_value->int32[i] != 0;
+ if (clear_value->int32[i] != 0 && MIN2(clear_value->int32[i], max) != max)
+ return;
+ } else if (desc->channel[i].pure_integer &&
+ desc->channel[i].type == VK_FORMAT_TYPE_UNSIGNED) {
+ /* Use the maximum value for clamping the clear color. */
+ unsigned max = u_bit_consecutive(0, desc->channel[i].size);
+
+ values[i] = clear_value->uint32[i] != 0U;
+ if (clear_value->uint32[i] != 0U && MIN2(clear_value->uint32[i], max) != max)
+ return;
+ } else {
+ values[i] = clear_value->float32[i] != 0.0F;
+ if (clear_value->float32[i] != 0.0F && clear_value->float32[i] != 1.0F)
+ return;
+ }
+
+ if (index == extra_channel)
+ extra_value = values[i];
+ else
+ main_value = values[i];
+ }
+
+ for (int i = 0; i < 4; ++i)
+ if (values[i] != main_value &&
+ desc->swizzle[i] - VK_SWIZZLE_X != extra_channel &&
+ desc->swizzle[i] >= VK_SWIZZLE_X &&
+ desc->swizzle[i] <= VK_SWIZZLE_W)
+ return;
+
+ *can_avoid_fast_clear_elim = true;
+ if (main_value)
+ *reset_value |= 0x80808080U;
+
+ if (extra_value)
+ *reset_value |= 0x40404040U;
+ return;
+}
+
static bool
emit_fast_color_clear(struct radv_cmd_buffer *cmd_buffer,
const VkClearAttachment *clear_att,
@@ -932,9 +1009,17 @@ emit_fast_color_clear(struct radv_cmd_buffer *cmd_buffer,
RADV_CMD_FLAG_FLUSH_AND_INV_CB_META;
/* clear cmask buffer */
if (iview->image->surface.dcc_size) {
+ uint32_t reset_value;
+ bool can_avoid_fast_clear_elim;
+ vi_get_fast_clear_parameters(iview->image->vk_format,
+ &clear_value, &reset_value,
+ &can_avoid_fast_clear_elim);
+
radv_fill_buffer(cmd_buffer, iview->image->bo,
iview->image->offset + iview->image->dcc_offset,
- iview->image->surface.dcc_size, 0x20202020);
+ iview->image->surface.dcc_size, reset_value);
+ radv_set_dcc_need_cmask_elim_pred(cmd_buffer, iview->image,
+ !can_avoid_fast_clear_elim);
} else {
if (iview->image->surface.bpe > 8) {
diff --git a/src/amd/vulkan/radv_meta_fast_clear.c b/src/amd/vulkan/radv_meta_fast_clear.c
index 94610c4..ceee1e1 100644
--- a/src/amd/vulkan/radv_meta_fast_clear.c
+++ b/src/amd/vulkan/radv_meta_fast_clear.c
@@ -334,6 +334,20 @@ emit_fast_clear_flush(struct radv_cmd_buffer *cmd_buffer,
RADV_CMD_FLAG_FLUSH_AND_INV_CB_META);
}
+static void
+radv_emit_image_set_pred(struct radv_cmd_buffer *cmd_buffer,
+ struct radv_image *image, bool value)
+{
+ uint64_t va = 0;
+
+ if (value) {
+ va = cmd_buffer->device->ws->buffer_get_va(image->bo) + image->offset;
+ va += image->dcc_pred_offset;
+ }
+
+ si_emit_set_pred(cmd_buffer, va);
+}
+
/**
*/
void
@@ -351,6 +365,10 @@ radv_fast_clear_flush_image_inplace(struct radv_cmd_buffer *cmd_buffer,
radv_meta_save_pass(&saved_pass_state, cmd_buffer);
radv_meta_save_graphics_reset_vport_scissor_novertex(&saved_state, cmd_buffer);
+ if (image->surface.dcc_size) {
+ radv_emit_image_set_pred(cmd_buffer, image, true);
+ cmd_buffer->state.predicating = true;
+ }
for (uint32_t layer = 0; layer < layer_count; ++layer) {
struct radv_image_view iview;
@@ -413,6 +431,10 @@ radv_fast_clear_flush_image_inplace(struct radv_cmd_buffer *cmd_buffer,
&cmd_buffer->pool->alloc);
}
+ if (image->surface.dcc_size) {
+ cmd_buffer->state.predicating = false;
+ radv_emit_image_set_pred(cmd_buffer, image, false);
+ }
radv_meta_restore(&saved_state, cmd_buffer);
radv_meta_restore_pass(&saved_pass_state, cmd_buffer);
}
diff --git a/src/amd/vulkan/radv_private.h b/src/amd/vulkan/radv_private.h
index a167409..5c30d18 100644
--- a/src/amd/vulkan/radv_private.h
+++ b/src/amd/vulkan/radv_private.h
@@ -912,6 +912,9 @@ void radv_set_color_clear_regs(struct radv_cmd_buffer *cmd_buffer,
struct radv_image *image,
int idx,
uint32_t color_values[2]);
+void radv_set_dcc_need_cmask_elim_pred(struct radv_cmd_buffer *cmd_buffer,
+ struct radv_image *image,
+ bool value);
void radv_fill_buffer(struct radv_cmd_buffer *cmd_buffer,
struct radeon_winsys_bo *bo,
uint64_t offset, uint64_t size, uint32_t value);
@@ -1215,6 +1218,7 @@ struct radv_image {
struct radv_fmask_info fmask;
struct radv_cmask_info cmask;
uint32_t clear_value_offset;
+ uint32_t dcc_pred_offset;
};
/* Whether the image has a htile that is known consistent with the contents of
--
2.9.4
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