399 lines
16 KiB
C++
399 lines
16 KiB
C++
#include "paint_renderer/compositor.h"
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#include "test_harness.h"
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#include <cmath>
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#include <string_view>
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#include <vector>
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using pp::foundation::StatusCode;
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using pp::paint::BlendMode;
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using pp::paint::Rgba;
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using pp::paint::StrokeBlendMode;
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using pp::paint_renderer::LayerCompositeView;
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using pp::paint_renderer::CanvasBlendGateRequest;
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using pp::paint_renderer::StrokeCompositePath;
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using pp::paint_renderer::StrokeCompositeRequest;
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using pp::paint_renderer::composite_layer;
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using pp::paint_renderer::plan_canvas_blend_gate;
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using pp::paint_renderer::plan_stroke_composite;
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using pp::paint_renderer::stroke_composite_path_name;
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using pp::paint_renderer::stroke_composite_requires_feedback;
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using pp::renderer::Extent2D;
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using pp::renderer::RenderDeviceFeatures;
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using pp::renderer::TextureFormat;
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using pp::renderer::TextureUsage;
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namespace {
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bool near(float a, float b)
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{
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return std::fabs(a - b) < 0.0001F;
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}
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void composites_visible_layer_with_opacity(pp::tests::Harness& h)
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{
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std::vector<Rgba> destination {
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Rgba { .r = 0.2F, .g = 0.4F, .b = 0.6F, .a = 0.5F },
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};
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const std::vector<Rgba> foreground {
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Rgba { .r = 0.8F, .g = 0.2F, .b = 0.1F, .a = 0.5F },
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};
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const auto status = composite_layer(
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destination,
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Extent2D { .width = 1, .height = 1 },
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LayerCompositeView {
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.pixels = foreground,
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.opacity = 0.5F,
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.visible = true,
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.blend_mode = BlendMode::normal,
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});
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PP_EXPECT(h, status.ok());
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PP_EXPECT(h, near(destination[0].a, 0.625F));
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PP_EXPECT(h, near(destination[0].r, 0.44F));
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PP_EXPECT(h, near(destination[0].g, 0.32F));
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PP_EXPECT(h, near(destination[0].b, 0.4F));
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}
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void invisible_and_zero_opacity_layers_are_noops(pp::tests::Harness& h)
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{
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const Rgba original { .r = 0.1F, .g = 0.2F, .b = 0.3F, .a = 0.4F };
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std::vector<Rgba> destination { original };
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const std::vector<Rgba> foreground {
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Rgba { .r = 1.0F, .g = 1.0F, .b = 1.0F, .a = 1.0F },
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};
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PP_EXPECT(h, composite_layer(
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destination,
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Extent2D { .width = 1, .height = 1 },
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LayerCompositeView { .pixels = foreground, .opacity = 1.0F, .visible = false }).ok());
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PP_EXPECT(h, near(destination[0].r, original.r));
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PP_EXPECT(h, near(destination[0].g, original.g));
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PP_EXPECT(h, near(destination[0].b, original.b));
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PP_EXPECT(h, near(destination[0].a, original.a));
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PP_EXPECT(h, composite_layer(
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destination,
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Extent2D { .width = 1, .height = 1 },
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LayerCompositeView { .pixels = foreground, .opacity = 0.0F, .visible = true }).ok());
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PP_EXPECT(h, near(destination[0].r, original.r));
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PP_EXPECT(h, near(destination[0].g, original.g));
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PP_EXPECT(h, near(destination[0].b, original.b));
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PP_EXPECT(h, near(destination[0].a, original.a));
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}
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void rejects_invalid_sizes_and_opacity(pp::tests::Harness& h)
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{
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std::vector<Rgba> destination(2);
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const std::vector<Rgba> foreground(1);
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const auto mismatched = composite_layer(
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destination,
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Extent2D { .width = 2, .height = 1 },
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LayerCompositeView { .pixels = foreground });
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const auto bad_opacity = composite_layer(
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destination,
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Extent2D { .width = 2, .height = 1 },
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LayerCompositeView { .pixels = destination, .opacity = 1.5F });
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const auto bad_extent = composite_layer(
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destination,
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Extent2D { .width = 0, .height = 1 },
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LayerCompositeView { .pixels = destination });
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PP_EXPECT(h, !mismatched.ok());
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PP_EXPECT(h, mismatched.code == StatusCode::invalid_argument);
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PP_EXPECT(h, !bad_opacity.ok());
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PP_EXPECT(h, bad_opacity.code == StatusCode::out_of_range);
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PP_EXPECT(h, !bad_extent.ok());
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PP_EXPECT(h, bad_extent.code == StatusCode::invalid_argument);
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}
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void detects_feedback_requirements(pp::tests::Harness& h)
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{
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PP_EXPECT(h, !stroke_composite_requires_feedback(
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BlendMode::normal,
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StrokeBlendMode::normal,
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false,
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false));
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PP_EXPECT(h, stroke_composite_requires_feedback(
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BlendMode::multiply,
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StrokeBlendMode::normal,
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false,
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false));
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PP_EXPECT(h, stroke_composite_requires_feedback(
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BlendMode::normal,
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StrokeBlendMode::overlay,
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false,
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false));
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PP_EXPECT(h, stroke_composite_requires_feedback(
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BlendMode::normal,
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StrokeBlendMode::normal,
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true,
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false));
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PP_EXPECT(h, stroke_composite_requires_feedback(
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BlendMode::normal,
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StrokeBlendMode::normal,
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false,
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true));
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}
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void plans_stroke_composite_paths(pp::tests::Harness& h)
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{
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const StrokeCompositeRequest simple {
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.extent = Extent2D { .width = 64, .height = 32 },
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.target_usage = TextureUsage::render_target,
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};
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const auto fixed = plan_stroke_composite(
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RenderDeviceFeatures {},
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simple);
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PP_EXPECT(h, fixed);
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if (fixed) {
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PP_EXPECT(h, fixed.value().path == StrokeCompositePath::fixed_function_blend);
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PP_EXPECT(h, !fixed.value().complex_blend);
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PP_EXPECT(h, !fixed.value().reads_destination_color);
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PP_EXPECT(h, fixed.value().target_bytes == 8192U);
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PP_EXPECT(h, fixed.value().estimated_working_bytes == 8192U);
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}
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const StrokeCompositeRequest complex_fetch {
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.extent = Extent2D { .width = 32, .height = 16 },
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.target_usage = TextureUsage::render_target,
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.stroke_blend_mode = StrokeBlendMode::height,
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};
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const auto fetch = plan_stroke_composite(
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RenderDeviceFeatures {
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.framebuffer_fetch = true,
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.explicit_texture_transitions = true,
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},
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complex_fetch);
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PP_EXPECT(h, fetch);
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if (fetch) {
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PP_EXPECT(h, fetch.value().path == StrokeCompositePath::framebuffer_fetch);
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PP_EXPECT(h, fetch.value().complex_blend);
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PP_EXPECT(h, fetch.value().reads_destination_color);
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PP_EXPECT(h, !fetch.value().requires_auxiliary_texture);
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PP_EXPECT(h, fetch.value().requires_explicit_transition);
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PP_EXPECT(h, fetch.value().target_bytes == 2048U);
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}
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const StrokeCompositeRequest complex_copy {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_mode = BlendMode::overlay,
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.dual_brush_blend = true,
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};
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const auto copy = plan_stroke_composite(
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RenderDeviceFeatures { .texture_copy = true },
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complex_copy);
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PP_EXPECT(h, copy);
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if (copy) {
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PP_EXPECT(h, copy.value().path == StrokeCompositePath::ping_pong_textures);
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PP_EXPECT(h, copy.value().requires_auxiliary_texture);
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PP_EXPECT(h, copy.value().requires_texture_copy);
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PP_EXPECT(h, !copy.value().requires_render_target_blit);
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PP_EXPECT(h, copy.value().target_bytes == 2048U);
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PP_EXPECT(h, copy.value().auxiliary_bytes == 2048U);
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PP_EXPECT(h, copy.value().estimated_working_bytes == 4096U);
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}
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const auto blit = plan_stroke_composite(
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RenderDeviceFeatures { .render_target_blit = true },
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StrokeCompositeRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.pattern_blend = true,
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});
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PP_EXPECT(h, blit);
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if (blit) {
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PP_EXPECT(h, blit.value().path == StrokeCompositePath::ping_pong_textures);
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PP_EXPECT(h, !blit.value().requires_texture_copy);
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PP_EXPECT(h, blit.value().requires_render_target_blit);
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}
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}
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void rejects_bad_stroke_composite_plans(pp::tests::Harness& h)
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{
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const auto unsupported = plan_stroke_composite(
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RenderDeviceFeatures {},
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StrokeCompositeRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_mode = BlendMode::multiply,
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});
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const auto missing_usage = plan_stroke_composite(
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RenderDeviceFeatures { .texture_copy = true },
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StrokeCompositeRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.target_usage = TextureUsage::render_target,
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.layer_blend_mode = BlendMode::multiply,
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});
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const auto depth = plan_stroke_composite(
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RenderDeviceFeatures { .texture_copy = true },
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StrokeCompositeRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.target_format = TextureFormat::depth24_stencil8,
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.layer_blend_mode = BlendMode::multiply,
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});
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const auto bad_blend = plan_stroke_composite(
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RenderDeviceFeatures { .texture_copy = true },
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StrokeCompositeRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_mode = static_cast<BlendMode>(255),
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});
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const auto bad_stroke_blend = plan_stroke_composite(
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RenderDeviceFeatures { .texture_copy = true },
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StrokeCompositeRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.stroke_blend_mode = static_cast<StrokeBlendMode>(255),
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});
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PP_EXPECT(h, !unsupported.ok());
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PP_EXPECT(h, unsupported.status().code == StatusCode::invalid_argument);
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PP_EXPECT(h, !missing_usage.ok());
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PP_EXPECT(h, missing_usage.status().code == StatusCode::invalid_argument);
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PP_EXPECT(h, !depth.ok());
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PP_EXPECT(h, depth.status().code == StatusCode::invalid_argument);
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PP_EXPECT(h, !bad_blend.ok());
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PP_EXPECT(h, bad_blend.status().code == StatusCode::invalid_argument);
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PP_EXPECT(h, !bad_stroke_blend.ok());
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PP_EXPECT(h, bad_stroke_blend.status().code == StatusCode::invalid_argument);
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PP_EXPECT(h, stroke_composite_path_name(StrokeCompositePath::fixed_function_blend) == std::string_view("fixed_function_blend"));
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PP_EXPECT(h, stroke_composite_path_name(StrokeCompositePath::framebuffer_fetch) == std::string_view("framebuffer_fetch"));
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PP_EXPECT(h, stroke_composite_path_name(StrokeCompositePath::ping_pong_textures) == std::string_view("ping_pong_textures"));
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PP_EXPECT(h, stroke_composite_path_name(static_cast<StrokeCompositePath>(255)) == std::string_view("unknown"));
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}
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void plans_canvas_blend_gate_from_persisted_indices(pp::tests::Harness& h)
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{
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const std::vector<int> normal_layers { 0, 0, 0 };
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const auto normal = plan_canvas_blend_gate(
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RenderDeviceFeatures {},
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 0, .height = 0 },
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.layer_blend_modes = normal_layers,
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.has_stroke_blend_mode = true,
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.stroke_blend_mode = 0,
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});
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PP_EXPECT(h, normal);
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if (normal) {
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PP_EXPECT(h, !normal.value().shader_blend);
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PP_EXPECT(h, !normal.value().complex_blend);
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PP_EXPECT(h, !normal.value().compatibility_fallback);
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}
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const std::vector<int> layer_blend { 0, 4 };
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const auto layer = plan_canvas_blend_gate(
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RenderDeviceFeatures { .framebuffer_fetch = true },
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_modes = layer_blend,
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});
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PP_EXPECT(h, layer);
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if (layer) {
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PP_EXPECT(h, layer.value().shader_blend);
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PP_EXPECT(h, layer.value().complex_blend);
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PP_EXPECT(h, layer.value().first_complex_layer_index == 1);
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PP_EXPECT(h, layer.value().path == StrokeCompositePath::framebuffer_fetch);
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PP_EXPECT(h, layer.value().reads_destination_color);
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}
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const auto stroke = plan_canvas_blend_gate(
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RenderDeviceFeatures { .texture_copy = true },
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_modes = normal_layers,
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.has_stroke_blend_mode = true,
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.stroke_blend_mode = 10,
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});
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PP_EXPECT(h, stroke);
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if (stroke) {
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PP_EXPECT(h, stroke.value().shader_blend);
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PP_EXPECT(h, stroke.value().stroke_complex);
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PP_EXPECT(h, stroke.value().first_complex_layer_index == -1);
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PP_EXPECT(h, stroke.value().path == StrokeCompositePath::ping_pong_textures);
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PP_EXPECT(h, stroke.value().requires_texture_copy);
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}
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}
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void canvas_blend_gate_preserves_legacy_fallbacks(pp::tests::Harness& h)
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{
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const std::vector<int> unknown_layer { 0, 99 };
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const auto unknown = plan_canvas_blend_gate(
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RenderDeviceFeatures { .texture_copy = true },
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_modes = unknown_layer,
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});
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PP_EXPECT(h, unknown);
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if (unknown) {
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PP_EXPECT(h, unknown.value().shader_blend);
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PP_EXPECT(h, unknown.value().complex_blend);
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PP_EXPECT(h, unknown.value().compatibility_fallback);
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PP_EXPECT(h, unknown.value().first_complex_layer_index == 1);
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PP_EXPECT(h, unknown.value().path == StrokeCompositePath::ping_pong_textures);
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PP_EXPECT(h, unknown.value().requires_auxiliary_texture);
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PP_EXPECT(h, unknown.value().requires_texture_copy);
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}
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const std::vector<int> normal_layers { 0 };
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const auto unsupported = plan_canvas_blend_gate(
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RenderDeviceFeatures {},
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_modes = normal_layers,
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.has_stroke_blend_mode = true,
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.stroke_blend_mode = 10,
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});
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PP_EXPECT(h, unsupported);
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if (unsupported) {
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PP_EXPECT(h, unsupported.value().shader_blend);
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PP_EXPECT(h, unsupported.value().stroke_complex);
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PP_EXPECT(h, unsupported.value().compatibility_fallback);
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PP_EXPECT(h, !unsupported.value().requires_texture_copy);
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}
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const auto unknown_fetch = plan_canvas_blend_gate(
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RenderDeviceFeatures { .framebuffer_fetch = true },
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 32, .height = 16 },
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.layer_blend_modes = unknown_layer,
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});
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PP_EXPECT(h, unknown_fetch);
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if (unknown_fetch) {
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PP_EXPECT(h, unknown_fetch.value().compatibility_fallback);
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PP_EXPECT(h, unknown_fetch.value().path == StrokeCompositePath::framebuffer_fetch);
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PP_EXPECT(h, unknown_fetch.value().reads_destination_color);
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PP_EXPECT(h, !unknown_fetch.value().requires_texture_copy);
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}
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const auto dual_pattern = plan_canvas_blend_gate(
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RenderDeviceFeatures { .render_target_blit = true },
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CanvasBlendGateRequest {
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.extent = Extent2D { .width = 16, .height = 16 },
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.layer_blend_modes = normal_layers,
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.dual_brush_blend = true,
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.pattern_blend = true,
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});
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PP_EXPECT(h, dual_pattern);
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if (dual_pattern) {
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PP_EXPECT(h, dual_pattern.value().shader_blend);
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PP_EXPECT(h, dual_pattern.value().dual_brush_complex);
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PP_EXPECT(h, dual_pattern.value().pattern_complex);
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PP_EXPECT(h, dual_pattern.value().requires_render_target_blit);
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}
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}
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}
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int main()
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{
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pp::tests::Harness harness;
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harness.run("composites_visible_layer_with_opacity", composites_visible_layer_with_opacity);
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harness.run("invisible_and_zero_opacity_layers_are_noops", invisible_and_zero_opacity_layers_are_noops);
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harness.run("rejects_invalid_sizes_and_opacity", rejects_invalid_sizes_and_opacity);
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harness.run("detects_feedback_requirements", detects_feedback_requirements);
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harness.run("plans_stroke_composite_paths", plans_stroke_composite_paths);
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harness.run("rejects_bad_stroke_composite_plans", rejects_bad_stroke_composite_plans);
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harness.run("plans_canvas_blend_gate_from_persisted_indices", plans_canvas_blend_gate_from_persisted_indices);
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harness.run("canvas_blend_gate_preserves_legacy_fallbacks", canvas_blend_gate_preserves_legacy_fallbacks);
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return harness.finish();
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}
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