hello triangle!

src/base/base_core.h

@@ -109,6 +109,20 @@ union U128
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 //~
 
+global U64 U64_MAX  = 0xffffffffffffffffull;
+global U32 U32_MAX  = 0xffffffff;
+global U16 U16_MAX  = 0xffff;
+global U8  U8_MAX   = 0xff;
+global S64 S64_MAX  = (S64)0x7fffffffffffffffll;
+global S32 S32_MAX  = (S32)0x7fffffff;
+global S16 S16_MAX  = (S16)0x7fff;
+global S8  S8_MAX   =  (S8)0x7f;
+
+global S64 S64_MIN = (S64)0x8000000000000000ll;
+global S32 S32_MIN = (S32)0x80000000;
+global S16 S16_MIN = (S16)0x8000;
+global S8  S8_MIN  =  (S8)0x80;
+
 global const U32 bitmask1  = 0x00000001;
 global const U32 bitmask2  = 0x00000003;
 global const U32 bitmask3  = 0x00000007;

src/render/d3d12/render_d3d12.c

@@ -33,6 +33,7 @@
 global R_D3D12_State *r_d3d12_state = 0;
 global R_D3D12_Command *r_d3d12_cmd = 0;
 global R_D3D12_RenderTarget *r_d3d12_rt = 0;
+global R_D3D12_Pipeline *r_d3d12_pipeline = 0;
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 //~
@@ -95,6 +96,20 @@ internal void r_init()
   r_d3d12_state->arena = arena;
   r_d3d12_state->window_handle = g_win32_window_handle;
 
+  r_d3d12_state->viewport = push_array(arena, D3D12_VIEWPORT, 1);
+  r_d3d12_state->viewport->TopLeftX = 0.0f;
+  r_d3d12_state->viewport->TopLeftY = 0.0f;
+  r_d3d12_state->viewport->Width    = (F32)WINDOW_WIDTH_PX;
+  r_d3d12_state->viewport->Height   = (F32)WINDOW_HEIGHT_PX;
+  r_d3d12_state->viewport->MinDepth = 0.0f;
+  r_d3d12_state->viewport->MaxDepth = 1.0f;
+
+  r_d3d12_state->scissor_rect = push_array(arena, D3D12_RECT, 1);
+  r_d3d12_state->scissor_rect->left   = 0;
+  r_d3d12_state->scissor_rect->top    = 0;
+  r_d3d12_state->scissor_rect->right  = WINDOW_WIDTH_PX;
+  r_d3d12_state->scissor_rect->bottom = WINDOW_HEIGHT_PX;
+
   r_d3d12_cmd = push_array(arena, 
                            R_D3D12_Command,
                            1);
@@ -105,6 +120,10 @@ internal void r_init()
                           R_D3D12_RenderTarget, 1);
   r_d3d12_rt->arena = arena;
 
+  r_d3d12_pipeline = push_array(arena, 
+                                R_D3D12_Pipeline, 1);
+  r_d3d12_pipeline->arena = arena;
+
   HRESULT hr;
   hr = D3D12GetDebugInterface(&IID_ID3D12Debug, (void **)&r_d3d12_state->debug);
   if(SUCCEEDED(hr) && r_d3d12_state->debug)
@@ -363,6 +382,80 @@ internal void r_init()
                     &err_blob);
     D3D12_SHADER_CHECK(hr, err_blob);
    
+    /// Vertex input layout
+    D3D12_INPUT_ELEMENT_DESC input_element_desc[2];
+    input_element_desc[0].SemanticName         = "POSITION";
+    input_element_desc[0].SemanticIndex        = 0;
+    input_element_desc[0].Format               = DXGI_FORMAT_R32G32B32_FLOAT;
+    input_element_desc[0].InputSlot            = 0;
+    input_element_desc[0].AlignedByteOffset    = 0;
+    input_element_desc[0].InputSlotClass       = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
+    input_element_desc[0].InstanceDataStepRate = 0;
+
+    input_element_desc[1].SemanticName         = "COLOR";
+    input_element_desc[1].SemanticIndex        = 0;
+    input_element_desc[1].Format               = DXGI_FORMAT_R32G32B32A32_FLOAT;
+    input_element_desc[1].InputSlot            = 0;
+    input_element_desc[1].AlignedByteOffset    = 12;
+    input_element_desc[1].InputSlotClass       = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
+    input_element_desc[1].InstanceDataStepRate = 0;
+
+
+    // Pipeline State Object PSO
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC pso_desc = {0};
+    {
+      pso_desc.InputLayout.pInputElementDescs = input_element_desc;
+      pso_desc.InputLayout.NumElements        = ArrayCount(input_element_desc);
+      
+      pso_desc.pRootSignature = r_d3d12_state->root_signature;
+      
+      pso_desc.VS = r_d3d12_get_shader_bytecode(vtx_shader);
+      pso_desc.PS = r_d3d12_get_shader_bytecode(pxl_shader);
+  
+      D3D12_RASTERIZER_DESC raster_desc = { .FillMode = D3D12_FILL_MODE_SOLID,
+                                            .CullMode = D3D12_CULL_MODE_BACK,
+                                            .FrontCounterClockwise = FALSE, 
+                                            .DepthBias = D3D12_DEFAULT_DEPTH_BIAS,
+                                            .DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP,
+                                            .SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS,
+                                            .DepthClipEnable = TRUE,
+                                            .MultisampleEnable = FALSE,
+                                            .AntialiasedLineEnable = FALSE,
+                                            .ForcedSampleCount = 0,
+                                            .ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF};
+      pso_desc.RasterizerState = raster_desc;
+
+      D3D12_BLEND_DESC blend_desc = {0};
+      blend_desc.RenderTarget[0].SrcBlend  = D3D12_BLEND_ONE;
+      blend_desc.RenderTarget[0].DestBlend = D3D12_BLEND_ZERO;
+      blend_desc.RenderTarget[0].BlendOp   = D3D12_BLEND_OP_ADD;
+      blend_desc.RenderTarget[0].SrcBlendAlpha  = D3D12_BLEND_ONE;
+      blend_desc.RenderTarget[0].DestBlendAlpha = D3D12_BLEND_ZERO;
+      blend_desc.RenderTarget[0].BlendOpAlpha   = D3D12_BLEND_OP_ADD; 
+      blend_desc.RenderTarget[0].LogicOp = D3D12_LOGIC_OP_NOOP;
+      blend_desc.RenderTarget[0].RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
+      
+      pso_desc.BlendState = blend_desc;
+
+      pso_desc.DepthStencilState.DepthEnable   = FALSE;
+      pso_desc.DepthStencilState.StencilEnable = FALSE;
+      pso_desc.SampleMask = U32_MAX;
+      pso_desc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+      pso_desc.NumRenderTargets = 1;
+      pso_desc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
+      pso_desc.SampleDesc.Count = 1;
+
+      hr = ID3D12Device_CreateGraphicsPipelineState(r_d3d12_state->device,
+                                                    &pso_desc,
+                                                    &IID_ID3D12PipelineState,
+                                                    (void **)&r_d3d12_pipeline->pso);
+      D3D12_CHECK(hr, "Failed to create pipeline state \n");
+
+
+
+
+    }
+
 
 
 
@@ -382,8 +475,6 @@ internal void r_init()
   }
 
 
-
-
   // ---------------------------------------------------------------------------
   // Fence
   hr = ID3D12Device_CreateFence(r_d3d12_state->device, 
@@ -424,11 +515,18 @@ internal void r_render()
 
   HRESULT hr = ID3D12CommandAllocator_Reset(r_d3d12_cmd->allocator);
   D3D12_CHECK(hr, "Failed to reset command allocator\n");
-  hr = ID3D12GraphicsCommandList_Reset(r_d3d12_cmd->list1, r_d3d12_cmd->allocator, 0);
+  hr = ID3D12GraphicsCommandList_Reset(r_d3d12_cmd->list1, r_d3d12_cmd->allocator, r_d3d12_pipeline->pso);
   D3D12_CHECK(hr, "Failed to reset command list\n");
 
   U32 frame_index = IDXGISwapChain3_GetCurrentBackBufferIndex(r_d3d12_state->swapchain);
 
+  ID3D12GraphicsCommandList_SetGraphicsRootSignature(r_d3d12_cmd->list1,
+                                                     r_d3d12_state->root_signature);
+  ID3D12GraphicsCommandList_RSSetViewports(r_d3d12_cmd->list1,
+                                           1, r_d3d12_state->viewport);
+  ID3D12GraphicsCommandList_RSSetScissorRects(r_d3d12_cmd->list1,
+                                              1, r_d3d12_state->scissor_rect);
+
   D3D12_RESOURCE_BARRIER barrier =
   {
     .Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION, 
@@ -448,6 +546,9 @@ internal void r_render()
   ID3D12DescriptorHeap_GetCPUDescriptorHandleForHeapStart(r_d3d12_rt->heap, &rtv_handle);
   rtv_handle.ptr += frame_index * r_d3d12_rt->descriptor_size;
   
+  ID3D12GraphicsCommandList_OMSetRenderTargets(r_d3d12_cmd->list1,
+                                               1, &rtv_handle, FALSE, 0);
+
   // Clear render target
   F32 clearColor[4] = {0.1f, 0.2f, 0.3f, 1.0f};
   ID3D12GraphicsCommandList_ClearRenderTargetView(r_d3d12_cmd->list1, 
@@ -456,6 +557,13 @@ internal void r_render()
                                                   0, 
                                                   0);
 
+  ID3D12GraphicsCommandList_IASetPrimitiveTopology(r_d3d12_cmd->list1, 
+                                                   D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+  ID3D12GraphicsCommandList_IASetVertexBuffers(r_d3d12_cmd->list1,
+                                               0, 1, &r_d3d12_state->vtx_buf_view);
+  ID3D12GraphicsCommandList_DrawInstanced(r_d3d12_cmd->list1,
+                                          3, 1, 0, 0);
+
 
 
   // Transition render target back to present state
@@ -508,6 +616,10 @@ internal void r_cleanup()
   D3D12_RELEASE(r_d3d12_state->swapchain);
   D3D12_RELEASE(r_d3d12_state->fence);
   D3D12_RELEASE(r_d3d12_state->vertex_buffer);
+  D3D12_RELEASE(r_d3d12_state->root_signature);
+
+  // PSOs
+  D3D12_RELEASE(r_d3d12_pipeline->pso);
 
   // RT
   D3D12_RELEASE(r_d3d12_rt->heap);

src/render/d3d12/render_d3d12.h

@@ -43,6 +43,13 @@ struct R_D3D12_RenderTarget
   ID3D12Resource *targets[R_NUM_FRAMES_IN_FLIGHT];
 };
 
+typedef struct R_D3D12_Pipeline R_D3D12_Pipeline;
+struct R_D3D12_Pipeline
+{
+  Arena *arena;
+  ID3D12PipelineState *pso;
+};
+
 typedef struct R_D3D12_State R_D3D12_State;
 struct R_D3D12_State
 {
@@ -59,6 +66,9 @@ struct R_D3D12_State
   D3D12_VERTEX_BUFFER_VIEW vtx_buf_view;
   ID3D12PipelineState *pipeline;
   ID3D12RootSignature *root_signature;
+  D3D12_VIEWPORT *viewport;
+  D3D12_RECT *scissor_rect;
+
 };
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////