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v3dv: always emit index buffer state for new jobs

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New jobs need to re-emit all state. Typically, this is achieved
by resetting all dirty state flags when we start a new job, but
for index buffers we were not using a dirty bit because we always
emit them immediately. This patch adds the bit and only tries
to skip index buffer state if the bit is not dirty, which will
ensure that we will always emit it for new jobs.

This fixes a regression in the shadowmapping demo from Sascha Willems
introduced with "v3dv: try harder to skip emission of redundant state".

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
This commit is contained in:
Iago Toral Quiroga 2020-06-19 13:42:21 +02:00 • committed by Marge Bot
parent 2f1c15116f
commit 1d6edcc3e8
2 changed files with 21 additions and 11 deletions
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17
src/broadcom/vulkan/v3dv_cmd_buffer.c
View file

@ -4083,10 +4083,17 @@ v3dv_CmdBindIndexBuffer(VkCommandBuffer commandBuffer,
v3dv_return_if_oom(cmd_buffer, NULL);
const uint32_t index_size = get_index_size(indexType);
if (buffer == cmd_buffer->state.index_buffer.buffer &&
offset == cmd_buffer->state.index_buffer.offset &&
index_size == cmd_buffer->state.index_buffer.index_size) {
return;
/* If we have started a new job we always need to emit index buffer state.
* We know we are in that scenario because that is the only case where we
* set the dirty bit.
*/
if (!(cmd_buffer->state.dirty & V3DV_CMD_DIRTY_INDEX_BUFFER)) {
if (buffer == cmd_buffer->state.index_buffer.buffer &&
offset == cmd_buffer->state.index_buffer.offset &&
index_size == cmd_buffer->state.index_buffer.index_size) {
return;
}
}
cl_emit(&job->bcl, INDEX_BUFFER_SETUP, ib) {
@ -4098,6 +4105,8 @@ v3dv_CmdBindIndexBuffer(VkCommandBuffer commandBuffer,
cmd_buffer->state.index_buffer.buffer = buffer;
cmd_buffer->state.index_buffer.offset = offset;
cmd_buffer->state.index_buffer.index_size = index_size;
cmd_buffer->state.dirty &= ~V3DV_CMD_DIRTY_INDEX_BUFFER;
}
void

15
src/broadcom/vulkan/v3dv_private.h
View file

@ -605,13 +605,14 @@ enum v3dv_cmd_dirty_bits {
V3DV_CMD_DIRTY_STENCIL_REFERENCE = 1 << 4,
V3DV_CMD_DIRTY_PIPELINE = 1 << 5,
V3DV_CMD_DIRTY_VERTEX_BUFFER = 1 << 6,
V3DV_CMD_DIRTY_DESCRIPTOR_SETS = 1 << 7,
V3DV_CMD_DIRTY_COMPUTE_DESCRIPTOR_SETS = 1 << 8,
V3DV_CMD_DIRTY_PUSH_CONSTANTS = 1 << 9,
V3DV_CMD_DIRTY_BLEND_CONSTANTS = 1 << 10,
V3DV_CMD_DIRTY_OCCLUSION_QUERY = 1 << 11,
V3DV_CMD_DIRTY_DEPTH_BIAS = 1 << 12,
V3DV_CMD_DIRTY_LINE_WIDTH = 1 << 13,
V3DV_CMD_DIRTY_INDEX_BUFFER = 1 << 7,
V3DV_CMD_DIRTY_DESCRIPTOR_SETS = 1 << 8,
V3DV_CMD_DIRTY_COMPUTE_DESCRIPTOR_SETS = 1 << 9,
V3DV_CMD_DIRTY_PUSH_CONSTANTS = 1 << 10,
V3DV_CMD_DIRTY_BLEND_CONSTANTS = 1 << 11,
V3DV_CMD_DIRTY_OCCLUSION_QUERY = 1 << 12,
V3DV_CMD_DIRTY_DEPTH_BIAS = 1 << 13,
V3DV_CMD_DIRTY_LINE_WIDTH = 1 << 14,
};
struct v3dv_dynamic_state {