clutter: Introduce color transform aware pipeline cache
Color aware rendering needs shaders / pipelines that adapt to what output they render to. For example if we want to render to a linear BT.2020 intermediate framebuffer on one monitor, and a non-linear sRGB direct target buffer on another, the shader for the same paint node or content will depend on where they are going to be presented. In order to help keeping track of what shader should target what monitor, without having to regenerate them each time, introduce a pipeline cache that knows how to handle differentiating between transforming between different color state. The cache is meant to handle caches for multiple pipeline users, where each user might potentially want to keep track of multiple pipelines itself. Lookup should be O(1), and in order to achieve this, separate the cache into 3 levels. The first level is the "pipeline group", where e.g. a ClutterContent type allocates a group where it can store its pipelines. Each group has a fixed number of "slots" where it can store a pipeline. Each slot has a hash table where the key is derived from a color state transform, and where the value is a CoglPipeline where the thame color state transformation is expected to be handled. A content will when painting know about its own color state, and the target state it should render into, retrieve a cached pipeline for the correct transform, or if the cache didn't have it, generate it. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3433>
This commit is contained in:
Jonas Ådahl
committed by
Sebastian Wick
Sebastian Wick
parent
0c2fa8e9a8
commit
4238512764
@ -39,6 +39,7 @@ clutter_conform_tests_general_tests = [
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'gesture',
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'gesture-relationship',
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'interval',
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'pipeline-cache',
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'timeline',
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'timeline-interpolate',
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'timeline-progress',
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208
src/tests/clutter/conform/pipeline-cache.c
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208
src/tests/clutter/conform/pipeline-cache.c
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@ -0,0 +1,208 @@
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#include <stdlib.h>
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#include <string.h>
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#include <clutter/clutter.h>
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#include "tests/clutter-test-utils.h"
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static void
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take_snippet (CoglPipeline *pipeline,
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CoglSnippet *snippet)
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{
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cogl_pipeline_add_snippet (pipeline, snippet);
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g_object_unref (snippet);
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}
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static void
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pipeline_cache_group_pipelines (void)
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{
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ClutterContext *context = clutter_test_get_context ();
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ClutterBackend *backend = clutter_test_get_backend ();
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CoglContext *cogl_context = clutter_backend_get_cogl_context (backend);
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ClutterPipelineCache *pipeline_cache = clutter_context_get_pipeline_cache (context);
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static ClutterPipelineGroup group1 = &group1;
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static ClutterPipelineGroup group2 = &group2;
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ClutterColorState *srgb_srgb;
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ClutterColorState *srgb_linear;
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ClutterColorState *bt2020_pq;
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ClutterColorState *bt2020_linear;
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/* SDR content with HDR output */
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CoglPipeline *srgb_srgb_to_bt2020_linear;
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CoglPipeline *bt2020_linear_to_bt2020_pq;
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/* HDR content with HDR output */
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CoglPipeline *bt2020_pq_to_bt2020_linear;
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CoglPipeline *srgb_linear_to_srgb_srgb;
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/* Copy for group2 */
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CoglPipeline *srgb_srgb_to_bt2020_linear_copy;
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srgb_srgb = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_SRGB,
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CLUTTER_TRANSFER_FUNCTION_SRGB);
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srgb_linear = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_SRGB,
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CLUTTER_TRANSFER_FUNCTION_LINEAR);
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bt2020_pq = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_BT2020,
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CLUTTER_TRANSFER_FUNCTION_PQ);
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bt2020_linear = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_BT2020,
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CLUTTER_TRANSFER_FUNCTION_LINEAR);
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srgb_srgb_to_bt2020_linear = cogl_pipeline_new (cogl_context);
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bt2020_linear_to_bt2020_pq = cogl_pipeline_new (cogl_context);
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bt2020_pq_to_bt2020_linear = cogl_pipeline_new (cogl_context);
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srgb_linear_to_srgb_srgb = cogl_pipeline_new (cogl_context);
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take_snippet (srgb_srgb_to_bt2020_linear,
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clutter_color_state_get_transform_snippet (srgb_srgb,
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bt2020_linear));
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take_snippet (bt2020_linear_to_bt2020_pq,
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clutter_color_state_get_transform_snippet (bt2020_linear,
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bt2020_pq));
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take_snippet (bt2020_pq_to_bt2020_linear,
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clutter_color_state_get_transform_snippet (bt2020_pq,
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bt2020_linear));
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take_snippet (srgb_linear_to_srgb_srgb,
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clutter_color_state_get_transform_snippet (srgb_linear,
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srgb_srgb));
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/* Check that it's all empty. */
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g_assert_null (clutter_pipeline_cache_get_pipeline (pipeline_cache, group1, 0,
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srgb_srgb, bt2020_linear));
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g_assert_null (clutter_pipeline_cache_get_pipeline (pipeline_cache, group1, 0,
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bt2020_linear, bt2020_pq));
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g_assert_null (clutter_pipeline_cache_get_pipeline (pipeline_cache, group2, 0,
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srgb_srgb, bt2020_linear));
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g_assert_null (clutter_pipeline_cache_get_pipeline (pipeline_cache, group2, 0,
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bt2020_linear, bt2020_pq));
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/* Adding sRGB to HDR pipeline to group1 should not effect group2. */
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group1, 0,
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srgb_srgb, bt2020_linear,
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srgb_srgb_to_bt2020_linear);
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group1, 0,
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bt2020_linear, bt2020_pq,
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bt2020_linear_to_bt2020_pq);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group1, 0,
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srgb_srgb, bt2020_linear) ==
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srgb_srgb_to_bt2020_linear);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group1, 0,
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bt2020_linear, bt2020_pq) ==
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bt2020_linear_to_bt2020_pq);
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g_assert_null (clutter_pipeline_cache_get_pipeline (pipeline_cache, group2, 0,
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srgb_srgb, bt2020_linear));
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g_assert_null (clutter_pipeline_cache_get_pipeline (pipeline_cache, group2, 0,
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bt2020_linear, bt2020_pq));
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srgb_srgb_to_bt2020_linear_copy =
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cogl_pipeline_copy (srgb_srgb_to_bt2020_linear);
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g_assert_true (srgb_srgb_to_bt2020_linear_copy !=
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srgb_srgb_to_bt2020_linear);
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group2, 0,
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srgb_srgb, bt2020_linear,
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srgb_srgb_to_bt2020_linear_copy);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group1, 0,
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srgb_srgb, bt2020_linear) ==
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srgb_srgb_to_bt2020_linear);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group2, 0,
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srgb_srgb, bt2020_linear) ==
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srgb_srgb_to_bt2020_linear_copy);
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}
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static void
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pipeline_cache_replace_pipeline (void)
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{
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ClutterContext *context = clutter_test_get_context ();
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ClutterBackend *backend = clutter_test_get_backend ();
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CoglContext *cogl_context = clutter_backend_get_cogl_context (backend);
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ClutterPipelineCache *pipeline_cache = clutter_context_get_pipeline_cache (context);
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static ClutterPipelineGroup group = &group;
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ClutterColorState *srgb_srgb;
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ClutterColorState *bt2020_linear;
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CoglPipeline *srgb_srgb_to_bt2020_linear;
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CoglPipeline *srgb_srgb_to_bt2020_linear_copy;
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srgb_srgb = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_SRGB,
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CLUTTER_TRANSFER_FUNCTION_SRGB);
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bt2020_linear = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_BT2020,
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CLUTTER_TRANSFER_FUNCTION_PQ);
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srgb_srgb_to_bt2020_linear = cogl_pipeline_new (cogl_context);
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srgb_srgb_to_bt2020_linear_copy =
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cogl_pipeline_copy (srgb_srgb_to_bt2020_linear);
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g_object_add_weak_pointer (G_OBJECT (srgb_srgb_to_bt2020_linear),
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(gpointer *) &srgb_srgb_to_bt2020_linear);
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take_snippet (srgb_srgb_to_bt2020_linear,
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clutter_color_state_get_transform_snippet (srgb_srgb,
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bt2020_linear));
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group, 0,
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srgb_srgb, bt2020_linear,
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srgb_srgb_to_bt2020_linear);
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g_object_unref (srgb_srgb_to_bt2020_linear);
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g_assert_nonnull (srgb_srgb_to_bt2020_linear);
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take_snippet (srgb_srgb_to_bt2020_linear_copy,
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clutter_color_state_get_transform_snippet (srgb_srgb,
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bt2020_linear));
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group, 0,
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srgb_srgb, bt2020_linear,
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srgb_srgb_to_bt2020_linear_copy);
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g_assert_null (srgb_srgb_to_bt2020_linear);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group, 0,
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srgb_srgb, bt2020_linear) ==
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srgb_srgb_to_bt2020_linear_copy);
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}
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static void
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pipeline_slots (void)
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{
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ClutterContext *context = clutter_test_get_context ();
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ClutterBackend *backend = clutter_test_get_backend ();
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CoglContext *cogl_context = clutter_backend_get_cogl_context (backend);
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ClutterPipelineCache *pipeline_cache = clutter_context_get_pipeline_cache (context);
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static ClutterPipelineGroup group = &group;
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ClutterColorState *srgb_srgb;
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ClutterColorState *bt2020_linear;
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CoglPipeline *srgb_srgb_to_bt2020_linear;
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CoglPipeline *srgb_srgb_to_bt2020_linear_copy;
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srgb_srgb = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_SRGB,
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CLUTTER_TRANSFER_FUNCTION_SRGB);
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bt2020_linear = clutter_color_state_new (context,
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CLUTTER_COLORSPACE_BT2020,
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CLUTTER_TRANSFER_FUNCTION_PQ);
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srgb_srgb_to_bt2020_linear = cogl_pipeline_new (cogl_context);
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srgb_srgb_to_bt2020_linear_copy =
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cogl_pipeline_copy (srgb_srgb_to_bt2020_linear);
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group, 0,
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srgb_srgb, bt2020_linear,
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srgb_srgb_to_bt2020_linear);
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clutter_pipeline_cache_set_pipeline (pipeline_cache, group, 1,
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srgb_srgb, bt2020_linear,
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srgb_srgb_to_bt2020_linear_copy);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group, 0,
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srgb_srgb, bt2020_linear) ==
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srgb_srgb_to_bt2020_linear);
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g_assert_true (clutter_pipeline_cache_get_pipeline (pipeline_cache, group, 1,
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srgb_srgb, bt2020_linear) ==
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srgb_srgb_to_bt2020_linear_copy);
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}
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CLUTTER_TEST_SUITE (
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CLUTTER_TEST_UNIT ("/pipeline-cache/group-pipelines", pipeline_cache_group_pipelines)
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CLUTTER_TEST_UNIT ("/pipeline-cache/replace-pipeline", pipeline_cache_replace_pipeline)
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CLUTTER_TEST_UNIT ("/pipeline-cache/pipeline-slots", pipeline_slots)
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)
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