From 367f3a78a40731da45ee12b9a18c94707f1d1429 Mon Sep 17 00:00:00 2001
From: jsmall-nvidia <jsmall@nvidia.com>
Date: Thu, 3 May 2018 14:25:13 -0400
Subject: Feature/vulkan first render (#545)

* First pass at InputLayout for Vulkan
Add support for RGBA_Float32

* Use VulkanModule and VulkanApi to handle accessing Vulkan types.

* First pass at Vulkan swap chain/Device queue.

* Added VulkanUtil for generic function functions.

* Move more functionality to VulkanApi and VulkanUtil.
Make Buffer able to initialize itself.

* More tidy up around VulkanDeviceQueue

* First pass use of VulkanDeviceQueue in VkRenderer

* First pass use of VulkanSwapChain on VkRenderer

* Added depth formats.
Binding for constant and vertex buffers for Vulkan.

* Setting up VkImageView on backbuffers.

* First pass support for setting up vkRenderPass.

* Fixes to work around Vulkan swap chain/verification issues.

* Added support for Pipeline and a pipeline cache.

* Working without waiting - because use of pipeline cache.

* Added support for VkFramebuffer in Vulkan.

* First pass at creating Vulkan graphics pipeline.

* More efforts to get Vulkan to render.

* Small improvement for checking of Binding flags.

* Removed setConstantBuffers from the Renderer interface - so that all resource binding takes place through the BindingState.
To make this work required a 'hack' in render-test main.cpp - so that the constant buffer binding that is needed in some tests is only added when it doesn't clash.

* RendererID -> unified into RendererType. Added getRendererType to Renderer interface.
Added ProjectionStyle, and function to get from RendererType.
Added getIdentityProjection to RendererUtil - to get projection that is the 'identity' - but hits the same pixels for all projection styles.

* Fix build problem on Win32 on Vulkan where should use VK_NULL_HANDLE.

* Improve naming, comments. Remove dead code.

* Remove unwanted comment.
---
 tools/render-test/render.cpp | 95 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)

(limited to 'tools/render-test/render.cpp')

diff --git a/tools/render-test/render.cpp b/tools/render-test/render.cpp
index 37948f88b..6c47a5afe 100644
--- a/tools/render-test/render.cpp
+++ b/tools/render-test/render.cpp
@@ -36,6 +36,23 @@ const Resource::DescBase& Resource::getDescBase() const
     return s_emptyDescBase;
 }
 
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! RendererUtil !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
+/* static */const uint8_t RendererUtil::s_formatSize[int(Format::CountOf)] = 
+{
+    0,                               // Unknown,
+
+    uint8_t(sizeof(float) * 4),      // RGBA_Float32,
+    uint8_t(sizeof(float) * 3),      // RGB_Float32,
+    uint8_t(sizeof(float) * 2),      // RG_Float32,
+    uint8_t(sizeof(float) * 1),      // R_Float32,
+
+    uint8_t(sizeof(uint32_t)),       // RGBA_Unorm_UInt8,
+
+    uint8_t(sizeof(float)),          // D_Float32,
+    uint8_t(sizeof(uint32_t)),       // D_Unorm24_S8,
+};
+
 /* !!!!!!!!!!!!!!!!!!!!!!!!!!! BindingState::Desc !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
 
 void BindingState::Desc::addSampler(const SamplerDesc& desc, const ShaderBindSet& shaderBindSet)
@@ -149,6 +166,26 @@ BindingState::BindIndexSlice BindingState::Desc::asSlice(ShaderStyle style, cons
 }
 
 
+int BindingState::Desc::findBindingIndex(Resource::BindFlag::Enum bindFlag, ShaderStyleFlags shaderStyleFlags, BindIndex index) const
+{
+    const int numBindings = int(m_bindings.Count());
+    for (int i = 0; i < numBindings; ++i)
+    {
+        const Binding& binding = m_bindings[i];
+        if (binding.resource && (binding.resource->getDescBase().bindFlags & bindFlag) != 0)
+        {
+            for (int j = 0; j < int(ShaderStyle::CountOf); ++j)
+            {
+                if (indexOf(binding.shaderBindSet.shaderSlices[j], index) >= 0)
+                {
+                    return i;
+                }
+            }
+        }
+    }
+
+    return -1;
+}
 /* !!!!!!!!!!!!!!!!!!!!!!!!!!! TextureResource::Size !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
 
 int TextureResource::Size::calcMaxDimension(Type type) const
@@ -328,4 +365,62 @@ void TextureResource::Desc::init3D(Format formatIn, int widthIn, int heightIn, i
     this->cpuAccessFlags = 0;
 }
 
+/* !!!!!!!!!!!!!!!!!!!!!!!!! RennderUtil !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
+ProjectionStyle RendererUtil::getProjectionStyle(RendererType type)
+{
+    switch (type)
+    {
+        case RendererType::DirectX11:
+        case RendererType::DirectX12:
+        {
+            return ProjectionStyle::DirectX;
+        }
+        case RendererType::OpenGl:              return ProjectionStyle::OpenGl;
+        case RendererType::Vulkan:              return ProjectionStyle::Vulkan;
+        case RendererType::Unknown:             return ProjectionStyle::Unknown;
+        default:
+        {
+            assert(!"Unhandled type");
+            return ProjectionStyle::Unknown;
+        }
+    }
+}
+
+/* static */void RendererUtil::getIdentityProjection(ProjectionStyle style, float projMatrix[16])
+{
+    switch (style)
+    {
+        case ProjectionStyle::DirectX:
+        case ProjectionStyle::OpenGl:
+        {
+            static const float kIdentity[] =
+            { 
+                1, 0, 0, 0,
+                0, 1, 0, 0,
+                0, 0, 1, 0,
+                0, 0, 0, 1
+            };
+            ::memcpy(projMatrix, kIdentity, sizeof(kIdentity));
+            break;
+        }
+        case ProjectionStyle::Vulkan:
+        {
+            static const float kIdentity[] =
+            {
+                1, 0, 0, 0,
+                0, -1, 0, 0,
+                0, 0, 1, 0,
+                0, 0, 0, 1
+            };
+            ::memcpy(projMatrix, kIdentity, sizeof(kIdentity));
+            break;
+        }
+        default: 
+        {
+            assert(!"Not handled");
+        }
+    }
+}
+
 } // renderer_test
-- 
cgit v1.2.3