Realtime Compositor: Implement zero cost external images #115574
@ -72,7 +72,11 @@ enum class ResultPrecision : uint8_t {
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* the results of identity operations, that is, operations that do nothing to their inputs in
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* the results of identity operations, that is, operations that do nothing to their inputs in
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* certain configurations. In which case, the proxy result is left as is with no extra
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* certain configurations. In which case, the proxy result is left as is with no extra
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* transformation on its domain whatsoever. Proxy results can be created by calling the
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* transformation on its domain whatsoever. Proxy results can be created by calling the
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* pass_through method, see that method for more details. */
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* pass_through method, see that method for more details.
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*
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* A result can wrap an external texture that is not allocated nor managed by the result. This is
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* set up by a call to the wrap_external method. In that case, when the reference count eventually
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* reach zero, the texture will not be freed. */
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class Result {
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class Result {
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private:
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private:
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/* The base type of the result's texture or single value. */
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/* The base type of the result's texture or single value. */
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@ -120,6 +124,10 @@ class Result {
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* calling the pass_through method, which sets this result to be the master of a target result.
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* calling the pass_through method, which sets this result to be the master of a target result.
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* See that method for more information. */
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* See that method for more information. */
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Result *master_ = nullptr;
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Result *master_ = nullptr;
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/* If true, then the result wraps an external texture that is not allocated nor managed by the
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* result. This is set up by a call to the wrap_external method. In that case, when the reference
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* count eventually reach zero, the texture will not be freed. */
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bool is_external_ = false;
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public:
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public:
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/* Construct a result of the given type and precision with the given texture pool that will be
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/* Construct a result of the given type and precision with the given texture pool that will be
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@ -203,6 +211,13 @@ class Result {
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* a practical example of use. */
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* a practical example of use. */
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void steal_data(Result &source);
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void steal_data(Result &source);
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/* Set up the result to wrap an external texture that is not allocated nor managed by the result.
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* The is_external_ member will be set to true, the domain will be set to have the same size as
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* the texture, and the texture will be set to the given texture. See the is_external_ member for
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* more information. The given texture should have the same format as the result and is assumed
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* to have a lifetime that covers the evaluation of the compositor. */
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void wrap_external(GPUTexture *texture);
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/* Sets the transformation of the domain of the result to the given transformation. */
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/* Sets the transformation of the domain of the result to the given transformation. */
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void set_transformation(const float3x3 &transformation);
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void set_transformation(const float3x3 &transformation);
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@ -192,6 +192,19 @@ void Result::steal_data(Result &source)
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source.texture_pool_ = nullptr;
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source.texture_pool_ = nullptr;
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}
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}
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void Result::wrap_external(GPUTexture *texture)
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{
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const eGPUTextureFormat texture_format = GPU_texture_format(texture);
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BLI_assert(texture_format == get_texture_format());
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BLI_assert(!is_allocated());
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BLI_assert(!master_);
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texture_ = texture;
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is_external_ = true;
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is_single_value_ = false;
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domain_ = Domain(int2(GPU_texture_width(texture), GPU_texture_height(texture)));
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}
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void Result::set_transformation(const float3x3 &transformation)
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void Result::set_transformation(const float3x3 &transformation)
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{
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{
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domain_.transformation = transformation;
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domain_.transformation = transformation;
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@ -298,7 +311,9 @@ void Result::release()
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* texture pool. */
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* texture pool. */
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reference_count_--;
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reference_count_--;
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if (reference_count_ == 0) {
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if (reference_count_ == 0) {
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texture_pool_->release(texture_);
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if (!is_external_) {
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texture_pool_->release(texture_);
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}
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texture_ = nullptr;
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texture_ = nullptr;
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}
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}
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}
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}
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@ -108,9 +108,7 @@ class KeyingScreenOperation : public NodeOperation {
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KeyingScreen &cached_keying_screen = context().cache_manager().keying_screens.get(
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KeyingScreen &cached_keying_screen = context().cache_manager().keying_screens.get(
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context(), get_movie_clip(), movie_tracking_object, get_smoothness());
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context(), get_movie_clip(), movie_tracking_object, get_smoothness());
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const Domain domain = compute_domain();
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keying_screen.wrap_external(cached_keying_screen.texture());
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keying_screen.allocate_texture(domain);
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GPU_texture_copy(keying_screen.texture(), cached_keying_screen.texture());
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}
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}
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Domain compute_domain() override
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Domain compute_domain() override
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@ -101,8 +101,7 @@ class MaskOperation : public NodeOperation {
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get_motion_blur_samples(),
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get_motion_blur_samples(),
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get_motion_blur_shutter());
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get_motion_blur_shutter());
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output_mask.allocate_texture(domain);
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output_mask.wrap_external(cached_mask.texture());
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GPU_texture_copy(output_mask.texture(), cached_mask.texture());
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}
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}
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Domain compute_domain() override
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Domain compute_domain() override
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@ -63,13 +63,11 @@ class TextureOperation : public NodeOperation {
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get_input("Scale").get_vector_value_default(float4(0.0f)).xy());
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get_input("Scale").get_vector_value_default(float4(0.0f)).xy());
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if (color_result.should_compute()) {
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if (color_result.should_compute()) {
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color_result.allocate_texture(domain);
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color_result.wrap_external(cached_texture.color_texture());
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GPU_texture_copy(color_result.texture(), cached_texture.color_texture());
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}
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}
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if (value_result.should_compute()) {
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if (value_result.should_compute()) {
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value_result.allocate_texture(domain);
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value_result.wrap_external(cached_texture.value_texture());
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GPU_texture_copy(value_result.texture(), cached_texture.value_texture());
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}
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}
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}
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}
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