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| 1 | +#include "graphicsApp.h" |
| 2 | +#include "colorTable.h" |
| 3 | +#include "textureLoader.h" |
| 4 | +#include "quadric/include/teapot.h" |
| 5 | + |
| 6 | +class BasicBrdf : public GraphicsApp |
| 7 | +{ |
| 8 | + struct Constants |
| 9 | + { |
| 10 | + VkBool32 gammaCorrection = true; |
| 11 | + }; |
| 12 | + |
| 13 | + enum Brdf : uint32_t |
| 14 | + { |
| 15 | + Lambert = 0, PhongMetallic, PhongPlastic, |
| 16 | + OrenNayar, BlinnPhongMetallic, BlinnPhongPlastic, |
| 17 | + Minnaert, Aniso, Ward, |
| 18 | + Max |
| 19 | + }; |
| 20 | + |
| 21 | + std::unique_ptr<quadric::Teapot> teapot; |
| 22 | + std::shared_ptr<magma::DynamicUniformBuffer<PhongMaterial>> materials; |
| 23 | + std::shared_ptr<magma::ImageView> aniso; |
| 24 | + std::shared_ptr<magma::GraphicsPipeline> lambertPipeline; |
| 25 | + std::shared_ptr<magma::GraphicsPipeline> phongPipeline; |
| 26 | + std::shared_ptr<magma::GraphicsPipeline> blinnPhongPipeline; |
| 27 | + std::shared_ptr<magma::GraphicsPipeline> orenNayarPipeline; |
| 28 | + std::shared_ptr<magma::GraphicsPipeline> minnaertPipeline; |
| 29 | + std::shared_ptr<magma::GraphicsPipeline> anisoPipeline; |
| 30 | + std::shared_ptr<magma::GraphicsPipeline> wardPipeline; |
| 31 | + DescriptorSet descriptor; |
| 32 | + |
| 33 | + Constants constants; |
| 34 | + |
| 35 | +public: |
| 36 | + explicit BasicBrdf(const AppEntry& entry): |
| 37 | + GraphicsApp(entry, TEXT("Basic BRDFs"), 1280, 720, true) |
| 38 | + { |
| 39 | + createTransformBuffer(9); |
| 40 | + setupViewProjection(); |
| 41 | + setupMaterials(); |
| 42 | + createMesh(); |
| 43 | + loadAnisoTexture(); |
| 44 | + setupDescriptorSets(); |
| 45 | + setupGraphicsPipelines(); |
| 46 | + |
| 47 | + renderScene(drawCmdBuffer); |
| 48 | + blit(msaaFramebuffer->getColorView(), FrontBuffer); |
| 49 | + blit(msaaFramebuffer->getColorView(), BackBuffer); |
| 50 | + } |
| 51 | + |
| 52 | + virtual void render(uint32_t bufferIndex) override |
| 53 | + { |
| 54 | + updateTransforms(); |
| 55 | + submitCommandBuffers(bufferIndex); |
| 56 | + sleep(2); // Cap fps |
| 57 | + } |
| 58 | + |
| 59 | + virtual void onKeyDown(char key, int repeat, uint32_t flags) override |
| 60 | + { |
| 61 | + switch (key) |
| 62 | + { |
| 63 | + case AppKey::Space: |
| 64 | + constants.gammaCorrection = !constants.gammaCorrection; |
| 65 | + setupGraphicsPipelines(); |
| 66 | + renderScene(drawCmdBuffer); |
| 67 | + break; |
| 68 | + } |
| 69 | + VulkanApp::onKeyDown(key, repeat, flags); |
| 70 | + } |
| 71 | + |
| 72 | + virtual void updateLightSource() override |
| 73 | + { |
| 74 | + magma::helpers::mapScoped<LightSource>(lightSource, |
| 75 | + [this](auto *light) |
| 76 | + { // Directional light |
| 77 | + constexpr float ambientFactor = 0.4f; |
| 78 | + const rapid::matrix normalMatrix = rapid::transpose(rapid::inverse(viewProj->getView())); |
| 79 | + const rapid::vector3 lightViewDir = normalMatrix * lightViewProj->getPosition(); |
| 80 | + light->viewPosition = lightViewDir.normalized(); |
| 81 | + light->ambient = white * ambientFactor; |
| 82 | + light->diffuse = white; |
| 83 | + light->specular = white; |
| 84 | + }); |
| 85 | + } |
| 86 | + |
| 87 | + void updateTransforms() |
| 88 | + { |
| 89 | + constexpr float dx = 8.f, dy = 5.f; |
| 90 | + static const rapid::matrix offset = rapid::translation(0.f, -1.5f, 0.f); |
| 91 | + static const rapid::matrix grid3x3[Brdf::Max] = { |
| 92 | + rapid::translation(-dx, dy), |
| 93 | + rapid::translation(0.f, dy), |
| 94 | + rapid::translation( dx, dy), |
| 95 | + rapid::translation(-dx, 0.f), |
| 96 | + rapid::translation(0.f, 0.f), |
| 97 | + rapid::translation( dx, 0.f), |
| 98 | + rapid::translation(-dx, -dy), |
| 99 | + rapid::translation(0.f, -dy), |
| 100 | + rapid::translation( dx, -dy) |
| 101 | + }; |
| 102 | + const rapid::matrix rotation = arcball->transform(); |
| 103 | + std::vector<rapid::matrix, core::aligned_allocator<rapid::matrix>> transforms(Brdf::Max); |
| 104 | + for (uint32_t i = 0; i < Brdf::Max; ++i) |
| 105 | + transforms[i] = offset * rotation * grid3x3[i]; |
| 106 | + updateObjectTransforms(transforms); |
| 107 | + } |
| 108 | + |
| 109 | + void setupViewProjection() |
| 110 | + { |
| 111 | + viewProj = std::make_unique<LeftHandedViewProjection>(); |
| 112 | + viewProj->setPosition(0.f, 0.f, -100.0f); |
| 113 | + viewProj->setFocus(0.f, 0.f, 0.f); |
| 114 | + viewProj->setFieldOfView(9.f); |
| 115 | + viewProj->setNearZ(90.f); |
| 116 | + viewProj->setFarZ(110.f); |
| 117 | + viewProj->setAspectRatio(width/(float)height); |
| 118 | + viewProj->updateView(); |
| 119 | + viewProj->updateProjection(); |
| 120 | + |
| 121 | + lightViewProj = std::make_unique<LeftHandedViewProjection>(); |
| 122 | + lightViewProj->setPosition(0.3f, 0.7f, -0.3f); |
| 123 | + lightViewProj->setFocus(0.f, 0.f, 0.f); |
| 124 | + lightViewProj->setFieldOfView(70.f); |
| 125 | + lightViewProj->setNearZ(5.f); |
| 126 | + lightViewProj->setFarZ(30.f); |
| 127 | + lightViewProj->setAspectRatio(1.f); |
| 128 | + lightViewProj->updateView(); |
| 129 | + lightViewProj->updateProjection(); |
| 130 | + |
| 131 | + updateViewProjTransforms(); |
| 132 | + } |
| 133 | + |
| 134 | + void setupMaterials() |
| 135 | + { |
| 136 | + materials = std::make_shared<magma::DynamicUniformBuffer<PhongMaterial>>(device, Brdf::Max); |
| 137 | + magma::helpers::mapScoped<PhongMaterial>(materials, |
| 138 | + [ this](magma::helpers::AlignedUniformArray<PhongMaterial>& materials) |
| 139 | + { |
| 140 | + constexpr float ambientFactor = 0.4f; |
| 141 | + |
| 142 | + materials[Lambert].diffuse = white; |
| 143 | + materials[OrenNayar].diffuse = white; |
| 144 | + materials[Minnaert].diffuse = white; |
| 145 | + |
| 146 | + materials[PhongMetallic].ambient = medium_blue * ambientFactor; |
| 147 | + materials[PhongMetallic].diffuse = medium_blue; |
| 148 | + materials[PhongMetallic].specular = deep_sky_blue; |
| 149 | + materials[PhongMetallic].shininess = 2.f; // High roughness for metal look like |
| 150 | + |
| 151 | + materials[PhongPlastic].ambient = royal_blue * ambientFactor; |
| 152 | + materials[PhongPlastic].diffuse = royal_blue; |
| 153 | + materials[PhongPlastic].specular = light_blue; |
| 154 | + materials[PhongPlastic].shininess = 64.f; // Low roughness for plastic look like |
| 155 | + |
| 156 | + materials[BlinnPhongMetallic].ambient = coral * ambientFactor; |
| 157 | + materials[BlinnPhongMetallic].diffuse = coral; |
| 158 | + materials[BlinnPhongMetallic].specular = light_coral; |
| 159 | + materials[BlinnPhongMetallic].shininess = materials[PhongMetallic].shininess * 4.f; |
| 160 | + |
| 161 | + materials[BlinnPhongPlastic].ambient = medium_sea_green * ambientFactor; |
| 162 | + materials[BlinnPhongPlastic].diffuse = medium_sea_green; |
| 163 | + materials[BlinnPhongPlastic].specular = light_green; |
| 164 | + materials[BlinnPhongPlastic].shininess = materials[PhongPlastic].shininess * 4.f; |
| 165 | + }); |
| 166 | + } |
| 167 | + |
| 168 | + void createMesh() |
| 169 | + { |
| 170 | + teapot = std::make_unique<quadric::Teapot>(16, cmdCopyBuf); |
| 171 | + } |
| 172 | + |
| 173 | + void loadAnisoTexture() |
| 174 | + { |
| 175 | + aniso = loadDxtTexture(cmdCopyImg, "aniso2.dds"); |
| 176 | + } |
| 177 | + |
| 178 | + void setupDescriptorSets() |
| 179 | + { |
| 180 | + using namespace magma::bindings; |
| 181 | + using namespace magma::descriptors; |
| 182 | + descriptor.layout = std::shared_ptr<magma::DescriptorSetLayout>(new magma::DescriptorSetLayout(device, |
| 183 | + { |
| 184 | + VertexStageBinding(0, DynamicUniformBuffer(1)), |
| 185 | + FragmentStageBinding(1, UniformBuffer(1)), |
| 186 | + FragmentStageBinding(2, UniformBuffer(1)), |
| 187 | + FragmentStageBinding(3, DynamicUniformBuffer(1)), |
| 188 | + FragmentStageBinding(4, CombinedImageSampler(1)) |
| 189 | + })); |
| 190 | + descriptor.set = descriptorPool->allocateDescriptorSet(descriptor.layout); |
| 191 | + descriptor.set->update(0, transforms); |
| 192 | + descriptor.set->update(1, viewProjTransforms); |
| 193 | + descriptor.set->update(2, lightSource); |
| 194 | + descriptor.set->update(3, materials); |
| 195 | + descriptor.set->update(4, aniso, anisotropicClampToEdge); |
| 196 | + } |
| 197 | + |
| 198 | + void setupGraphicsPipelines() |
| 199 | + { |
| 200 | + auto specialization(std::make_shared<magma::Specialization>(constants, |
| 201 | + magma::SpecializationEntry(0, &Constants::gammaCorrection))); |
| 202 | + lambertPipeline = createCommonSpecializedPipeline( |
| 203 | + "transform.o", "lambert.o", specialization, |
| 204 | + teapot->getVertexInput(), descriptor.layout); |
| 205 | + phongPipeline = createCommonSpecializedPipeline( |
| 206 | + "transform.o", "phong.o", specialization, |
| 207 | + teapot->getVertexInput(), descriptor.layout); |
| 208 | + blinnPhongPipeline = createCommonSpecializedPipeline( |
| 209 | + "transform.o", "blinnPhong.o", specialization, |
| 210 | + teapot->getVertexInput(), descriptor.layout); |
| 211 | + orenNayarPipeline = createCommonSpecializedPipeline( |
| 212 | + "transform.o", "orenNayar.o", specialization, |
| 213 | + teapot->getVertexInput(), descriptor.layout); |
| 214 | + minnaertPipeline = createCommonSpecializedPipeline( |
| 215 | + "transform.o", "minnaert.o", specialization, |
| 216 | + teapot->getVertexInput(), descriptor.layout); |
| 217 | + anisoPipeline = createCommonSpecializedPipeline( |
| 218 | + "transform.o", "aniso.o", specialization, |
| 219 | + teapot->getVertexInput(), descriptor.layout); |
| 220 | + wardPipeline = createCommonSpecializedPipeline( |
| 221 | + "transform.o", "ward.o", specialization, |
| 222 | + teapot->getVertexInput(), descriptor.layout); |
| 223 | + } |
| 224 | + |
| 225 | + void renderScene(std::shared_ptr<magma::CommandBuffer> cmdBuffer) |
| 226 | + { |
| 227 | + cmdBuffer->begin(); |
| 228 | + { |
| 229 | + cmdBuffer->beginRenderPass(msaaFramebuffer->getRenderPass(), msaaFramebuffer->getFramebuffer(), |
| 230 | + { |
| 231 | + magma::ClearColor(0.349f, 0.289f, 0.255f, 1.f), |
| 232 | + magma::clears::depthOne |
| 233 | + }); |
| 234 | + { |
| 235 | + cmdBuffer->setViewport(magma::Viewport(0, 0, msaaFramebuffer->getExtent())); |
| 236 | + cmdBuffer->setScissor(magma::Scissor(0, 0, msaaFramebuffer->getExtent())); |
| 237 | + std::shared_ptr<magma::GraphicsPipeline> pipelines[] = { |
| 238 | + lambertPipeline, |
| 239 | + phongPipeline, |
| 240 | + phongPipeline, |
| 241 | + orenNayarPipeline, |
| 242 | + blinnPhongPipeline, |
| 243 | + blinnPhongPipeline, |
| 244 | + minnaertPipeline, |
| 245 | + anisoPipeline, |
| 246 | + wardPipeline |
| 247 | + }; |
| 248 | + for (uint32_t i = 0; i < Brdf::Max; ++i) |
| 249 | + { |
| 250 | + cmdBuffer->bindPipeline(pipelines[i]); |
| 251 | + cmdBuffer->bindDescriptorSet(pipelines[i], descriptor.set, { |
| 252 | + transforms->getDynamicOffset(i), |
| 253 | + materials->getDynamicOffset(i) |
| 254 | + }); |
| 255 | + teapot->draw(cmdBuffer); |
| 256 | + } |
| 257 | + } |
| 258 | + cmdBuffer->endRenderPass(); |
| 259 | + } |
| 260 | + cmdBuffer->end(); |
| 261 | + } |
| 262 | +}; |
| 263 | + |
| 264 | +std::unique_ptr<IApplication> appFactory(const AppEntry& entry) |
| 265 | +{ |
| 266 | + return std::unique_ptr<BasicBrdf>(new BasicBrdf(entry)); |
| 267 | +} |
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