Vk: rename PipelineStage::AllGraphics to AllRasterization.

Because that's what it is, after all. Also mention this naming
difference in the Vulkan wrapping overview.

I was wondering if I should rename QueueFlag::Graphics too, but since
graphics queues are used for (not really rasterization-specific) image
copies as well, and ray tracing is actually done on compute queues, I
don't think renaming to Rasterization is a good idea. Clarified the
comments at least.

doc/vulkan-wrapping.dox

@@ -188,5 +188,14 @@ can be also passed to @ref Vk::DeviceCreateInfo to allow reuse:
 
 @snippet MagnumVk.cpp wrapping-optimizing-properties-device-move
 
+@section vulkan-wrapping-naming-differences Important differences in naming
+
+-   To emphasise the distinction between rasterization and raytracing
+    pipelines and prevent confusion, @ref Vk::RasterizationPipelineCreateInfo
+    is used for @type_vk{GraphicsPipelineCreateInfo}, and similarly for
+    related APIs, such as @ref Vk::DynamicRasterizationState containing a
+    rasterization-related subset of @type_vk{DynamicState} or
+    @ref Vk::PipelineStage::AllRasterization for @val_vk{PIPELINE_STAGE_ALL_GRAPHICS_BIT,PipelineStageFlagBits}.
+
 */
 }

src/Magnum/Vk/DeviceProperties.h

@@ -161,10 +161,10 @@ Wraps a @type_vk_keyword{QueueFlagBits}.
 @m_enum_values_as_keywords
 */
 enum class QueueFlag: UnsignedInt {
-    /** Supports graphics operations */
+    /** Supports general graphics and rasterization operations. */
     Graphics = VK_QUEUE_GRAPHICS_BIT,
 
-    /** Supports compute operations */
+    /** Supports compute and ray tracing operations. */
     Compute = VK_QUEUE_COMPUTE_BIT,
 
     /** Supports transfer operations */

src/Magnum/Vk/Pipeline.h

@@ -335,9 +335,9 @@ enum class PipelineStage: UnsignedInt {
     RayTracingShader = VK_PIPELINE_STAGE_RAY_TRACING_SHADER_BIT_KHR,
 
     /**
-     * Execution of all graphics stages. While numerically a single bit, it's
-     * equivalent to the logical OR of a supported and enabled subset of the
-     * following:
+     * Execution of all rasterization stages. While numerically a single bit,
+     * it's equivalent to the logical OR of a supported and enabled subset of
+     * the following:
      *
      * -    @ref PipelineStage::DrawIndirect
      * -    @ref PipelineStage::VertexInput
@@ -350,10 +350,12 @@ enum class PipelineStage: UnsignedInt {
      * -    @ref PipelineStage::LateFragmentTests
      * -    @ref PipelineStage::ColorAttachmentOutput
      *
-     * Note that this *does not* include @ref PipelineStage::RayTracingShader
-     * or @ref PipelineStage::AccelerationStructureBuild.
+     * As the name suggests, this *does not* include
+     * @ref PipelineStage::RayTracingShader or
+     * @ref PipelineStage::AccelerationStructureBuild.
+     * @todo mention mesh / task shaders once exposed
      */
-    AllGraphics = VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT,
+    AllRasterization = VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT,
 
     /**
      * All commands.

src/Magnum/Vk/Test/RenderPassTest.cpp

@@ -776,7 +776,7 @@ void RenderPassTest::subpassDependencyConstruct() {
     SubpassDependency dependency{
         15, SubpassDependency::External,
         PipelineStage::ComputeShader|PipelineStage::Transfer,
-        PipelineStage::AllGraphics,
+        PipelineStage::AllRasterization,
         Access::TransferRead|Access::UniformRead,
         Access::MemoryWrite,
         DependencyFlag::ByRegion};
@@ -830,7 +830,7 @@ template<class T> void RenderPassTest::subpassDependencyConvertToVk() {
     SubpassDependency dependency{
         15, SubpassDependency::External,
         PipelineStage::ComputeShader|PipelineStage::Transfer,
-        PipelineStage::AllGraphics,
+        PipelineStage::AllRasterization,
         Access::TransferRead|Access::UniformRead,
         Access::MemoryWrite,
         DependencyFlag::ByRegion};