mpv/video/out/gpu/utils.c

350 lines
9.8 KiB
C

#include "common/msg.h"
#include "video/out/vo.h"
#include "utils.h"
// Standard parallel 2D projection, except y1 < y0 means that the coordinate
// system is flipped, not the projection.
void gl_transform_ortho(struct gl_transform *t, float x0, float x1,
float y0, float y1)
{
if (y1 < y0) {
float tmp = y0;
y0 = tmp - y1;
y1 = tmp;
}
t->m[0][0] = 2.0f / (x1 - x0);
t->m[0][1] = 0.0f;
t->m[1][0] = 0.0f;
t->m[1][1] = 2.0f / (y1 - y0);
t->t[0] = -(x1 + x0) / (x1 - x0);
t->t[1] = -(y1 + y0) / (y1 - y0);
}
// Apply the effects of one transformation to another, transforming it in the
// process. In other words: post-composes t onto x
void gl_transform_trans(struct gl_transform t, struct gl_transform *x)
{
struct gl_transform xt = *x;
x->m[0][0] = t.m[0][0] * xt.m[0][0] + t.m[0][1] * xt.m[1][0];
x->m[1][0] = t.m[1][0] * xt.m[0][0] + t.m[1][1] * xt.m[1][0];
x->m[0][1] = t.m[0][0] * xt.m[0][1] + t.m[0][1] * xt.m[1][1];
x->m[1][1] = t.m[1][0] * xt.m[0][1] + t.m[1][1] * xt.m[1][1];
gl_transform_vec(t, &x->t[0], &x->t[1]);
}
void gl_transform_ortho_fbo(struct gl_transform *t, const struct ra_fbo *fbo)
{
int y_dir = fbo->flip ? -1 : 1;
gl_transform_ortho(t, 0, fbo->tex->params.w, 0, fbo->tex->params.h * y_dir);
}
float gl_video_scale_ambient_lux(float lmin, float lmax,
float rmin, float rmax, float lux)
{
assert(lmax > lmin);
float num = (rmax - rmin) * (log10(lux) - log10(lmin));
float den = log10(lmax) - log10(lmin);
float result = num / den + rmin;
// clamp the result
float max = MPMAX(rmax, rmin);
float min = MPMIN(rmax, rmin);
return MPMAX(MPMIN(result, max), min);
}
void ra_buf_pool_uninit(struct ra *ra, struct ra_buf_pool *pool)
{
for (int i = 0; i < pool->num_buffers; i++)
ra_buf_free(ra, &pool->buffers[i]);
talloc_free(pool->buffers);
*pool = (struct ra_buf_pool){0};
}
static bool ra_buf_params_compatible(const struct ra_buf_params *new,
const struct ra_buf_params *old)
{
return new->type == old->type &&
new->size <= old->size &&
new->host_mapped == old->host_mapped &&
new->host_mutable == old->host_mutable;
}
static bool ra_buf_pool_grow(struct ra *ra, struct ra_buf_pool *pool)
{
struct ra_buf *buf = ra_buf_create(ra, &pool->current_params);
if (!buf)
return false;
MP_TARRAY_INSERT_AT(NULL, pool->buffers, pool->num_buffers, pool->index, buf);
MP_VERBOSE(ra, "Resized buffer pool of type %u to size %d\n",
pool->current_params.type, pool->num_buffers);
return true;
}
struct ra_buf *ra_buf_pool_get(struct ra *ra, struct ra_buf_pool *pool,
const struct ra_buf_params *params)
{
assert(!params->initial_data);
if (!ra_buf_params_compatible(params, &pool->current_params)) {
ra_buf_pool_uninit(ra, pool);
pool->current_params = *params;
}
// Make sure we have at least one buffer available
if (!pool->buffers && !ra_buf_pool_grow(ra, pool))
return NULL;
// Make sure the next buffer is available for use
if (!ra->fns->buf_poll(ra, pool->buffers[pool->index]) &&
!ra_buf_pool_grow(ra, pool))
{
return NULL;
}
struct ra_buf *buf = pool->buffers[pool->index++];
pool->index %= pool->num_buffers;
return buf;
}
bool ra_tex_upload_pbo(struct ra *ra, struct ra_buf_pool *pbo,
const struct ra_tex_upload_params *params)
{
if (params->buf)
return ra->fns->tex_upload(ra, params);
struct ra_tex *tex = params->tex;
size_t row_size = tex->params.dimensions == 2 ? params->stride :
tex->params.w * tex->params.format->pixel_size;
int height = tex->params.h;
if (tex->params.dimensions == 2 && params->rc)
height = mp_rect_h(*params->rc);
struct ra_buf_params bufparams = {
.type = RA_BUF_TYPE_TEX_UPLOAD,
.size = row_size * height * tex->params.d,
.host_mutable = true,
};
struct ra_buf *buf = ra_buf_pool_get(ra, pbo, &bufparams);
if (!buf)
return false;
ra->fns->buf_update(ra, buf, 0, params->src, bufparams.size);
struct ra_tex_upload_params newparams = *params;
newparams.buf = buf;
newparams.src = NULL;
return ra->fns->tex_upload(ra, &newparams);
}
struct ra_layout std140_layout(struct ra_renderpass_input *inp)
{
size_t el_size = ra_vartype_size(inp->type);
// std140 packing rules:
// 1. The alignment of generic values is their size in bytes
// 2. The alignment of vectors is the vector length * the base count, with
// the exception of vec3 which is always aligned like vec4
// 3. The alignment of arrays is that of the element size rounded up to
// the nearest multiple of vec4
// 4. Matrices are treated like arrays of vectors
// 5. Arrays/matrices are laid out with a stride equal to the alignment
size_t stride = el_size * inp->dim_v;
size_t align = stride;
if (inp->dim_v == 3)
align += el_size;
if (inp->dim_m > 1)
stride = align = MP_ALIGN_UP(stride, sizeof(float[4]));
return (struct ra_layout) {
.align = align,
.stride = stride,
.size = stride * inp->dim_m,
};
}
struct ra_layout std430_layout(struct ra_renderpass_input *inp)
{
size_t el_size = ra_vartype_size(inp->type);
// std430 packing rules: like std140, except arrays/matrices are always
// "tightly" packed, even arrays/matrices of vec3s
size_t stride = el_size * inp->dim_v;
size_t align = stride;
if (inp->dim_v == 3 && inp->dim_m == 1)
align += el_size;
return (struct ra_layout) {
.align = align,
.stride = stride,
.size = stride * inp->dim_m,
};
}
// Resize a texture to a new desired size and format if necessary
bool ra_tex_resize(struct ra *ra, struct mp_log *log, struct ra_tex **tex,
int w, int h, const struct ra_format *fmt)
{
if (*tex) {
struct ra_tex_params cur_params = (*tex)->params;
if (cur_params.w == w && cur_params.h == h && cur_params.format == fmt)
return true;
}
mp_dbg(log, "Resizing texture: %dx%d\n", w, h);
if (!fmt || !fmt->renderable || !fmt->linear_filter) {
mp_err(log, "Format %s not supported.\n", fmt ? fmt->name : "(unset)");
return false;
}
ra_tex_free(ra, tex);
struct ra_tex_params params = {
.dimensions = 2,
.w = w,
.h = h,
.d = 1,
.format = fmt,
.src_linear = true,
.render_src = true,
.render_dst = true,
.storage_dst = fmt->storable,
.blit_src = true,
};
*tex = ra_tex_create(ra, &params);
if (!*tex)
mp_err(log, "Error: texture could not be created.\n");
return *tex;
}
struct timer_pool {
struct ra *ra;
ra_timer *timer;
bool running; // detect invalid usage
uint64_t samples[VO_PERF_SAMPLE_COUNT];
int sample_idx;
int sample_count;
uint64_t sum;
uint64_t peak;
};
struct timer_pool *timer_pool_create(struct ra *ra)
{
if (!ra->fns->timer_create)
return NULL;
ra_timer *timer = ra->fns->timer_create(ra);
if (!timer)
return NULL;
struct timer_pool *pool = talloc(NULL, struct timer_pool);
if (!pool) {
ra->fns->timer_destroy(ra, timer);
return NULL;
}
*pool = (struct timer_pool){ .ra = ra, .timer = timer };
return pool;
}
void timer_pool_destroy(struct timer_pool *pool)
{
if (!pool)
return;
pool->ra->fns->timer_destroy(pool->ra, pool->timer);
talloc_free(pool);
}
void timer_pool_start(struct timer_pool *pool)
{
if (!pool)
return;
assert(!pool->running);
pool->ra->fns->timer_start(pool->ra, pool->timer);
pool->running = true;
}
void timer_pool_stop(struct timer_pool *pool)
{
if (!pool)
return;
assert(pool->running);
uint64_t res = pool->ra->fns->timer_stop(pool->ra, pool->timer);
pool->running = false;
if (res) {
// Input res into the buffer and grab the previous value
uint64_t old = pool->samples[pool->sample_idx];
pool->sample_count = MPMIN(pool->sample_count + 1, VO_PERF_SAMPLE_COUNT);
pool->samples[pool->sample_idx++] = res;
pool->sample_idx %= VO_PERF_SAMPLE_COUNT;
pool->sum = pool->sum + res - old;
// Update peak if necessary
if (res >= pool->peak) {
pool->peak = res;
} else if (pool->peak == old) {
// It's possible that the last peak was the value we just removed,
// if so we need to scan for the new peak
uint64_t peak = res;
for (int i = 0; i < VO_PERF_SAMPLE_COUNT; i++)
peak = MPMAX(peak, pool->samples[i]);
pool->peak = peak;
}
}
}
struct mp_pass_perf timer_pool_measure(struct timer_pool *pool)
{
if (!pool)
return (struct mp_pass_perf){0};
struct mp_pass_perf res = {
.peak = pool->peak,
.count = pool->sample_count,
};
int idx = pool->sample_idx - pool->sample_count + VO_PERF_SAMPLE_COUNT;
for (int i = 0; i < res.count; i++) {
idx %= VO_PERF_SAMPLE_COUNT;
res.samples[i] = pool->samples[idx++];
}
if (res.count > 0) {
res.last = res.samples[res.count - 1];
res.avg = pool->sum / res.count;
}
return res;
}
void mp_log_source(struct mp_log *log, int lev, const char *src)
{
int line = 1;
if (!src)
return;
while (*src) {
const char *end = strchr(src, '\n');
const char *next = end + 1;
if (!end)
next = end = src + strlen(src);
mp_msg(log, lev, "[%3d] %.*s\n", line, (int)(end - src), src);
line++;
src = next;
}
}