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turnip: add internal helpers for tu_cs

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Add tu_cs_get_offset, tu_cs_get_size, tu_cs_get_space, and
tu_cs_is_empty.
This commit is contained in:
Chia-I Wu 2019-01-29 14:09:17 -08:00
parent 429e2d5755
commit c11580373f
1 changed files with 47 additions and 8 deletions
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55
src/freedreno/vulkan/tu_cs.c
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@ -53,6 +53,46 @@ tu_cs_finish(struct tu_device *dev, struct tu_cs *cs)
free(cs->bos);
}
/**
* Get the offset of the command packets emitted since the last call to
* tu_cs_end.
*/
static uint32_t
tu_cs_get_offset(const struct tu_cs *cs)
{
assert(cs->bo_count);
return cs->start - (uint32_t *) cs->bos[cs->bo_count - 1]->map;
}
/**
* Get the size of the command packets emitted since the last call to
* tu_cs_end.
*/
static uint32_t
tu_cs_get_size(const struct tu_cs *cs)
{
return cs->cur - cs->start;
}
/**
* Get the size of the remaining space in the current BO.
*/
static uint32_t
tu_cs_get_space(const struct tu_cs *cs)
{
return cs->end - cs->cur;
}
/**
* Return true if there is no command packet emitted since the last call to
* tu_cs_end.
*/
static uint32_t
tu_cs_is_empty(const struct tu_cs *cs)
{
return tu_cs_get_size(cs) == 0;
}
/*
* Allocate and add a BO to a command stream. Following command packets will
* be emitted to the new BO.
@ -105,9 +145,9 @@ VkResult
tu_cs_begin(struct tu_device *dev, struct tu_cs *cs, uint32_t reserve_size)
{
/* no dangling command packet */
assert(cs->start == cs->cur);
assert(tu_cs_is_empty(cs));
if (cs->end - cs->cur < reserve_size) {
if (tu_cs_get_space(cs) < reserve_size) {
uint32_t new_size = MAX2(16384, reserve_size * sizeof(uint32_t));
if (cs->bo_count)
new_size = MAX2(new_size, cs->bos[cs->bo_count - 1]->size * 2);
@ -117,7 +157,7 @@ tu_cs_begin(struct tu_device *dev, struct tu_cs *cs, uint32_t reserve_size)
return result;
}
assert(cs->end - cs->cur >= reserve_size);
assert(tu_cs_get_space(cs) >= reserve_size);
return VK_SUCCESS;
}
@ -130,7 +170,7 @@ VkResult
tu_cs_end(struct tu_cs *cs)
{
/* no command packet at all */
if (cs->start == cs->cur)
if (tu_cs_is_empty(cs))
return VK_SUCCESS;
/* grow cs->entries if needed */
@ -146,13 +186,12 @@ tu_cs_end(struct tu_cs *cs)
}
assert(cs->bo_count);
const struct tu_bo *bo = cs->bos[cs->bo_count - 1];
/* add an entry for [cs->start, cs->cur] */
cs->entries[cs->entry_count++] = (struct tu_cs_entry) {
.bo = bo,
.size = (cs->cur - cs->start) * sizeof(uint32_t),
.offset = (cs->start - (uint32_t *) bo->map) * sizeof(uint32_t),
.bo = cs->bos[cs->bo_count - 1],
.size = tu_cs_get_size(cs) * sizeof(uint32_t),
.offset = tu_cs_get_offset(cs) * sizeof(uint32_t),
};
cs->start = cs->cur;