pipelines

assets/shader/static_object.effect

@@ -14,6 +14,25 @@ struct VSOutput
     float4 Pos : SV_POSITION;
 };
 
+VSOutput VsMain(VSInput input, uint vertexIndex : SV_VertexID) {
+    VSOutput output = (VSOutput)0;
+    return output;
+}
+            END
+            
+            
+            dx11 BEGIN
+#include "common.hlsl"
+
+struct VSInput
+{
+};
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+};
+
 VSOutput VsMain(VSInput input, uint vertexIndex : SV_VertexID) {
     VSOutput output = (VSOutput)0;
     return output;
@@ -27,6 +46,21 @@ struct PSOutput {
 float4 Color : SV_TARGET0;
 };
 
+PSOutput PsMain(void) {
+    PSOutput output = (PSOutput)0;
+    output.Color[0] = 0;
+    output.Color[1] = 0;
+    output.Color[2] = 0;
+    output.Color[3] = 0;
+    return output;
+}
+            END
+            
+            dx11 BEGIN
+struct PSOutput {
+float4 Color : SV_TARGET0;
+};
+
 PSOutput PsMain(void) {
     PSOutput output = (PSOutput)0;
     output.Color[0] = 0;

meson_options.txt

@@ -2,5 +2,6 @@ option('static_renderer', type : 'string', value : 'vk', description : 'Name of
 option('use_xlib', type : 'boolean', value : false, description : 'Use Xlib for window creation under linux')
 option('error_report_debugbreak', type : 'boolean', value : true, description : 'Debugbreak in ReportError')
 option('enable_dxc_shader_compiler', type : 'boolean', value : true, description : 'Enables building the dxc-based shader compiler.')
+option('enable_dx11_shader_compiler', type : 'boolean', value : true, description : 'Enables building the dx11-bases shader compiler.')
 option('game_as_subdir', type : 'boolean', value : false, description : 'If true, adds the directory "src/game" to the build.')
 option('build_dx11', type : 'boolean', value : true, description : 'Enables/disables the build of the dx11 renderer.')

src/renderer/dx11/device_objects.hpp

@@ -17,24 +17,24 @@ struct rt_render_target {
 
     rt_pixel_format format;
 
-    bool HasStencilComponent() const {
+    uint32_t version;
+    rt_render_target *next_free;
+
+    RT_INLINE bool HasStencilComponent() const {
         return format == RT_PIXEL_FORMAT_DEPTH24_STENCIL8;
     }
 
-    bool IsColorRenderTarget() const {
+    RT_INLINE bool IsColorRenderTarget() const {
         RT_ASSERT(!(rtv != nullptr && dsv != nullptr),
                   "A render target should not contain a render target and a depth stencil view");
         return rtv != nullptr;
     }
 
-    bool IsDepthStencilTarget() const {
+    RT_INLINE bool IsDepthStencilTarget() const {
         RT_ASSERT(!(rtv != nullptr && dsv != nullptr),
                   "A render target should not contain a render target and a depth stencil view");
         return dsv != nullptr;
     }
-    
-    uint32_t version;
-    rt_render_target *next_free;
 };
 
 struct rt_command_buffer {
@@ -55,8 +55,27 @@ struct rt_buffer {
     rt_buffer *next_free;
 };
 
+struct rt_pipeline {
+    ID3D11InputLayout *input_layout;
+    ID3D11VertexShader *vertex_shader;
+    ID3D11PixelShader *pixel_shader;
+
+    ID3D11ComputeShader *compute_shader;
+
+
+    rt_pipeline *next_free;
+    uint32_t version;
+
+    RT_INLINE bool IsComputePipeline() const {
+        RT_ASSERT(!(compute_shader && (vertex_shader || pixel_shader)),
+                  "A pipeline should contain either a compute shader or graphics shaders.");
+        return compute_shader != nullptr;
+    }
+};
+
 rt_render_target *rtGetRenderTarget(rt_render_target_handle handle);
 rt_command_buffer *rtGetCommandBuffer(rt_command_buffer_handle handle);
 rt_buffer *rtGetBuffer(rt_buffer_handle handle);
+rt_pipeline *rtGetPipeline(rt_pipeline_handle handle);
 
 #endif

src/renderer/dx11/init.cpp

@@ -253,15 +253,6 @@ extern "C" {
 
 #define RETURN_HANDLE_ARRAY_STUB(out, count) RETURN_HANDLE_ARRAY_STUB2(out, count, 1)
 
-rt_pipeline_handle RT_RENDERER_API_FN(CompilePipeline)(const rt_pipeline_info *info) {
-    RT_UNUSED(info);
-    RETURN_HANDLE_STUB(rt_pipeline_handle);
-}
-
-void RT_RENDERER_API_FN(DestroyPipeline)(rt_pipeline_handle handle) {
-    RT_UNUSED(handle);
-}
-
 rt_result RT_RENDERER_API_FN(CreateSemaphores)(uint32_t count,
                                                const rt_gpu_semaphore_info *info,
                                                rt_gpu_semaphore_handle *p_semaphores) {

src/renderer/dx11/pipelines.cpp

@@ -0,0 +1,217 @@
+#include <d3d11.h>
+#include <d3d11_1.h>
+
+#include "gfx/effect.h"
+#include "gfx/renderer_api.h"
+#include "runtime/config.h"
+#include "runtime/handles.h"
+#include "runtime/mem_arena.h"
+#include "runtime/threading_helpers.hpp"
+
+#include "device_objects.hpp"
+#include "gpu.hpp"
+
+RT_CVAR_I(rt_Dx11MaxPipelines,
+          "Maximum number of simultaneously existing pipelines. Default: 128",
+          128);
+
+static rt_pipeline *_pipelines;
+static rt_pipeline *_first_free;
+static rt_mutex *_lock;
+
+rt_result InitPipelineManagement() {
+    _pipelines =
+        reinterpret_cast<rt_pipeline *>(calloc((size_t)rt_Dx11MaxPipelines.i, sizeof(rt_pipeline)));
+    if (!_pipelines)
+        return RT_OUT_OF_MEMORY;
+
+    _first_free = _pipelines + 1;
+    for (int i = 0; i < rt_Dx11MaxPipelines.i - 1; ++i)
+        _pipelines[i].next_free = &_pipelines[i + 1];
+
+    _lock = rtCreateMutex();
+    if (!_lock) {
+        free(_pipelines);
+        return RT_UNKNOWN_ERROR;
+    }
+
+    return RT_SUCCESS;
+}
+
+void ShutdownPipelineManagement() {
+    for (int i = 0; i < rt_Dx11MaxPipelines.i; ++i) {
+        if (_pipelines[i].compute_shader)
+            _pipelines[i].compute_shader->Release();
+        if (_pipelines[i].vertex_shader)
+            _pipelines[i].vertex_shader->Release();
+        if (_pipelines[i].pixel_shader)
+            _pipelines[i].pixel_shader->Release();
+        if (_pipelines[i].input_layout)
+            _pipelines[i].input_layout->Release();
+    }
+    free(_pipelines);
+    rtDestroyMutex(_lock);
+}
+
+rt_result GetShader(rt_resource_id id, rt_shader_info **p_shader, rt_arena *arena) {
+    size_t shader_size = rtGetResourceSize(id);
+    if (shader_size == 0)
+        return RT_INVALID_VALUE;
+    void *buffer = rtArenaPush(arena, shader_size);
+    if (!buffer)
+        return RT_OUT_OF_MEMORY;
+    rt_result res = rtGetResource(id, buffer);
+    if (res != RT_SUCCESS) {
+        rtArenaPop(arena, shader_size);
+        return res;
+    }
+
+    rt_resource *resource = reinterpret_cast<rt_resource *>(buffer);
+    RT_ASSERT(resource->type == RT_RESOURCE_SHADER, "Expected a shader");
+    *p_shader = reinterpret_cast<rt_shader_info *>(resource->data);
+    return RT_SUCCESS;
+}
+
+extern "C" rt_pipeline_handle RT_RENDERER_API_FN(CompilePipeline)(const rt_pipeline_info *info) {
+    rt_pipeline *slot = nullptr;
+    {
+        auto lg = rtAutoLock(_lock);
+
+        slot = _first_free;
+        if (slot)
+            _first_free = slot->next_free;
+    }
+    if (!slot) {
+        rtLog("dx11", "Could not create pipeline, because no slots are available.");
+        return RT_INVALID_HANDLE;
+    }
+
+    rt_temp_arena temp = rtGetTemporaryArena(NULL, 0);
+
+    if (info->vertex_shader != RT_INVALID_RESOURCE_ID) {
+        rt_shader_info *vs;
+        if (GetShader(info->vertex_shader, &vs, temp.arena) != RT_SUCCESS) {
+            rtReportError("dx11", "Could not retrieve vertex shader data.");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+
+        void *bytecode = rtResolveRelptr(&vs->bytecode);
+        if (FAILED(g_gpu.device->CreateVertexShader(bytecode,
+                                                    vs->bytecode_length,
+                                                    NULL,
+                                                    &slot->vertex_shader))) {
+            rtReportError("dx11", "Vertex shader creation failed");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+
+        // TODO: effects should specify the expected vertex layout
+        // For now, we use a default
+        /* clang-format off */
+        D3D11_INPUT_ELEMENT_DESC default_layout[] = {
+            {"POSITION", 0,  DXGI_FORMAT_R32G32B32_FLOAT, 0,                            0, D3D11_INPUT_PER_VERTEX_DATA, 0},
+            {"NORMAL",   0,  DXGI_FORMAT_R32G32B32_FLOAT, 0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0},
+            {"TANGENT",  0,  DXGI_FORMAT_R32G32B32_FLOAT, 0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0},
+            {"TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,     0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0},
+        };
+        /* clang-format on */
+
+        if (FAILED(g_gpu.device->CreateInputLayout(default_layout,
+                                                   RT_ARRAY_COUNT(default_layout),
+                                                   bytecode,
+                                                   vs->bytecode_length,
+                                                   &slot->input_layout))) {
+            rtReportError("dx11", "Failed to create the vertex layout.");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+    }
+
+    if (info->fragment_shader != RT_INVALID_RESOURCE_ID) {
+        rt_shader_info *vs;
+        if (GetShader(info->fragment_shader, &vs, temp.arena) != RT_SUCCESS) {
+            rtReportError("dx11", "Could not retrieve fragment shader data.");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+
+        void *bytecode = rtResolveRelptr(&vs->bytecode);
+        if (FAILED(g_gpu.device->CreatePixelShader(bytecode,
+                                                   vs->bytecode_length,
+                                                   NULL,
+                                                   &slot->pixel_shader))) {
+            rtReportError("dx11", "Fragment shader creation failed");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+    }
+
+    if (info->compute_shader != RT_INVALID_RESOURCE_ID) {
+        rt_shader_info *vs;
+        if (GetShader(info->compute_shader, &vs, temp.arena) != RT_SUCCESS) {
+            rtReportError("dx11", "Could not retrieve compute shader data.");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+
+        void *bytecode = rtResolveRelptr(&vs->bytecode);
+        if (FAILED(g_gpu.device->CreateComputeShader(bytecode,
+                                                     vs->bytecode_length,
+                                                     NULL,
+                                                     &slot->compute_shader))) {
+            rtReportError("dx11", "Compute shader creation failed");
+            auto lg         = rtAutoLock(_lock);
+            slot->next_free = _first_free;
+            _first_free     = slot;
+            return RT_INVALID_HANDLE;
+        }
+    }
+
+    slot->version  = (slot->version + 1) % RT_RENDER_BACKEND_HANDLE_MAX_VERSION;
+    uint32_t index = static_cast<uint32_t>(slot - _pipelines);
+    return {slot->version, index};
+}
+
+extern "C" void RT_RENDERER_API_FN(DestroyPipeline)(rt_pipeline_handle handle) {
+    if (!RT_IS_HANDLE_VALID(handle) || (int)handle.index >= rt_Dx11MaxPipelines.i)
+        return;
+    auto lg = rtAutoLock(_lock);
+    if (handle.version != _pipelines[handle.index].version)
+        return;
+
+    if (_pipelines[handle.index].compute_shader)
+        _pipelines[handle.index].compute_shader->Release();
+    if (_pipelines[handle.index].vertex_shader)
+        _pipelines[handle.index].vertex_shader->Release();
+    if (_pipelines[handle.index].pixel_shader)
+        _pipelines[handle.index].pixel_shader->Release();
+    if (_pipelines[handle.index].input_layout)
+        _pipelines[handle.index].input_layout->Release();
+
+    _pipelines[handle.index].next_free = _first_free;
+    _pipelines[handle.index].version =
+        (_pipelines[handle.index].version + 1) % RT_RENDER_BACKEND_HANDLE_MAX_VERSION;
+    _first_free = &_pipelines[handle.index];
+}
+
+rt_pipeline *rtGetPipeline(rt_pipeline_handle handle) {
+    if (!RT_IS_HANDLE_VALID(handle) || (int)handle.index >= rt_Dx11MaxPipelines.i)
+        return nullptr;
+    auto lg = rtAutoLock(_lock);
+    if (handle.version != _pipelines[handle.index].version)
+        return nullptr;
+    return &_pipelines[handle.index];
+}