making kinc compile with MinGW

Backends/Audio2/WASAPI/Sources/kinc/backend/wasapi.c

@@ -7,6 +7,9 @@
 
 // Windows 7
 #define WINVER 0x0601
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
 #define _WIN32_WINNT 0x0601
 
 #define NOATOM
@@ -53,6 +56,7 @@
 #include <AudioClient.h>
 #include <mmdeviceapi.h>
 
+#ifndef __MINGW32__
 // MIDL_INTERFACE("1CB9AD4C-DBFA-4c32-B178-C2F568A703B2")
 DEFINE_GUID(IID_IAudioClient, 0x1CB9AD4C, 0xDBFA, 0x4c32, 0xB1, 0x78, 0xC2, 0xF5, 0x68, 0xA7, 0x03, 0xB2);
 // MIDL_INTERFACE("F294ACFC-3146-4483-A7BF-ADDCA7C260E2")
@@ -61,6 +65,7 @@ DEFINE_GUID(IID_IAudioRenderClient, 0xF294ACFC, 0x3146, 0x4483, 0xA7, 0xBF, 0xAD
 DEFINE_GUID(IID_IMMDeviceEnumerator, 0xA95664D2, 0x9614, 0x4F35, 0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36, 0x17, 0xE6);
 // DECLSPEC_UUID("BCDE0395-E52F-467C-8E3D-C4579291692E")
 DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xBCDE0395, 0xE52F, 0x467C, 0x8E, 0x3D, 0xC4, 0x57, 0x92, 0x91, 0x69, 0x2E);
+#endif
 
 // based on the implementation in soloud and Microsoft sample code
 static void (*volatile a2_callback)(kinc_a2_buffer_t *buffer, uint32_t samples, void *userdata) = NULL;

Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/Direct3D11.c.h

@@ -39,6 +39,15 @@ IUnknown *kinc_winapp_internal_get_window(void);
 #include <windows.graphics.directx.direct3d11.interop.h>
 #endif
 
+// MinGW workaround for missing defines
+#ifndef D3D11_MIN_DEPTH
+#define D3D11_MIN_DEPTH (0.0f)
+#endif
+
+#ifndef D3D11_MAX_DEPTH
+#define D3D11_MAX_DEPTH (1.0f)
+#endif
+
 extern kinc_g4_pipeline_t *currentPipeline;
 extern float currentBlendFactor[4];
 extern bool needPipelineRebind;
@@ -876,6 +885,8 @@ void kinc_g4_set_texture_magnification_filter(kinc_g4_texture_unit_t unit, kinc_
 		case D3D11_FILTER_ANISOTROPIC:
 			d3d11filter = D3D11_FILTER_MIN_LINEAR_MAG_POINT_MIP_LINEAR;
 			break;
+		default:
+			break;
 		}
 		break;
 	case KINC_G4_TEXTURE_FILTER_LINEAR:
@@ -896,6 +907,8 @@ void kinc_g4_set_texture_magnification_filter(kinc_g4_texture_unit_t unit, kinc_
 		case D3D11_FILTER_ANISOTROPIC:
 			d3d11filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
 			break;
+		default:
+			break;
 		}
 		break;
 	case KINC_G4_TEXTURE_FILTER_ANISOTROPIC:
@@ -940,6 +953,8 @@ void kinc_g4_set_texture_minification_filter(kinc_g4_texture_unit_t unit, kinc_g
 		case D3D11_FILTER_ANISOTROPIC:
 			d3d11filter = D3D11_FILTER_MIN_POINT_MAG_MIP_LINEAR;
 			break;
+		default:
+			break;
 		}
 		break;
 	case KINC_G4_TEXTURE_FILTER_LINEAR:
@@ -961,11 +976,15 @@ void kinc_g4_set_texture_minification_filter(kinc_g4_texture_unit_t unit, kinc_g
 		case D3D11_FILTER_ANISOTROPIC:
 			d3d11filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
 			break;
+		default:
+			break;
 		}
 		break;
 	case KINC_G4_TEXTURE_FILTER_ANISOTROPIC:
 		d3d11filter = D3D11_FILTER_ANISOTROPIC;
 		break;
+	default:
+		break;
 	}
 
 	lastSamplers[unit.stages[KINC_G4_SHADER_TYPE_FRAGMENT]].Filter = d3d11filter;
@@ -1008,6 +1027,8 @@ void kinc_g4_set_texture_mipmap_filter(kinc_g4_texture_unit_t unit, kinc_g4_mipm
 		case D3D11_FILTER_ANISOTROPIC:
 			d3d11filter = D3D11_FILTER_ANISOTROPIC;
 			break;
+		default:
+			break;
 		}
 		break;
 	case KINC_G4_MIPMAP_FILTER_LINEAR:
@@ -1031,6 +1052,8 @@ void kinc_g4_set_texture_mipmap_filter(kinc_g4_texture_unit_t unit, kinc_g4_mipm
 		case D3D11_FILTER_ANISOTROPIC:
 			d3d11filter = D3D11_FILTER_ANISOTROPIC;
 			break;
+		default:
+			break;
 		}
 		break;
 	}

Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/ShaderHash.c.h

@@ -4,7 +4,7 @@
 uint32_t kinc_internal_hash_name(unsigned char *str) {
 	unsigned long hash = 5381;
 	int c;
-	while (c = *str++) {
+	while ((c = *str++)) {
 		hash = hash * 33 ^ c;
 	}
 	return hash;

Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/d3d11unit.c

@@ -1,5 +1,8 @@
 // Windows 7
 #define WINVER 0x0601
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
 #define _WIN32_WINNT 0x0601
 
 #define NOATOM

Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/indexbuffer.c.h

@@ -1,4 +1,4 @@
-#include <kinc/graphics4/indexBuffer.h>
+#include <kinc/graphics4/indexbuffer.h>
 
 void kinc_g4_index_buffer_init(kinc_g4_index_buffer_t *buffer, int count, kinc_g4_index_buffer_format_t format, kinc_g4_usage_t usage) {
 	buffer->impl.count = count;

Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/pipeline.c.h

@@ -788,6 +788,8 @@ void kinc_g4_pipeline_compile(struct kinc_g4_pipeline *state) {
 				}
 				break;
 			}
+			default:
+				break;
 			}
 		}
 	}

Backends/Graphics5/Direct3D12/Sources/kinc/backend/graphics5/Direct3D12.c.h

@@ -424,7 +424,7 @@ static void initWindow(struct dx_window *window, int windowIndex) {
 	swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
 	swapChainDesc.Windowed = true;
 
-	IDXGIFactory4 *dxgiFactory;
+	IDXGIFactory4 *dxgiFactory = NULL;
 	kinc_microsoft_affirm(CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)));
 
 	kinc_microsoft_affirm(dxgiFactory->CreateSwapChain((IUnknown *)commandQueue, &swapChainDesc, &window->swapChain));

Backends/Graphics5/Direct3D12/Sources/kinc/backend/graphics5/d3d12unit.cpp

@@ -2,6 +2,9 @@
 
 // Windows 7
 #define WINVER 0x0601
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
 #define _WIN32_WINNT 0x0601
 
 #define NOATOM

Backends/System/Windows/Sources/kinc/backend/windowsunit.c

@@ -1,5 +1,8 @@
 // Windows 7
 #define WINVER 0x0601
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
 #define _WIN32_WINNT 0x0601
 
 #define NOATOM