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panfrost: Streamline fixed-function get_blend path

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Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10869>
This commit is contained in:
Alyssa Rosenzweig 2021-05-14 15:53:52 -04:00 • committed by Marge Bot
parent 2984d3bf1f
commit bb0b3fde10
1 changed files with 14 additions and 20 deletions
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34
src/gallium/drivers/panfrost/pan_blend_cso.c
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@ -157,34 +157,28 @@ panfrost_get_blend(struct panfrost_batch *batch, unsigned rti, struct panfrost_b
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_device *dev = pan_device(ctx->base.screen);
struct pipe_framebuffer_state *fb = &ctx->pipe_framebuffer;
enum pipe_format fmt = fb->cbufs[rti]->format;
unsigned nr_samples = fb->cbufs[rti]->nr_samples ? :
fb->cbufs[rti]->texture->nr_samples;
/* Grab the blend state */
struct panfrost_blend_state *blend = ctx->blend;
struct pan_blend_info info = blend->info[rti];
struct pipe_surface *surf = batch->key.cbufs[rti];
enum pipe_format fmt = surf->format;
/* Use fixed-function if the equation permits, the format is blendable,
* and no more than one unique constant is accessed */
if (info.fixed_function && panfrost_blendable_formats[fmt].internal &&
pan_blend_is_homogenous_constant(info.constant_mask,
ctx->blend_color.color)) {
return 0;
}
/* Otherwise, we need to grab a shader */
struct pan_blend_state pan_blend = blend->pan;
unsigned nr_samples = surf->nr_samples ? : surf->texture->nr_samples;
pan_blend.rts[rti].format = fmt;
pan_blend.rts[rti].nr_samples = nr_samples;
memcpy(pan_blend.constants, ctx->blend_color.color,
sizeof(pan_blend.constants));
/* First, we'll try fixed function, matching equation and constant */
bool ff = blend->info[rti].fixed_function;
/* Not all formats are blendable, check if this one is */
ff &= panfrost_blendable_formats[fmt].internal;
/* There are hazards around constants, check that */
ff &= pan_blend_is_homogenous_constant(blend->info[rti].constant_mask,
ctx->blend_color.color);
if (ff)
return 0;
/* Otherwise, we need to grab a shader */
/* Upload the shader, sharing a BO */
if (!(*bo)) {
*bo = panfrost_batch_create_bo(batch, 4096,