Test Shader Dx10

ImPlatform/ImPlatform.cpp

@@ -2,6 +2,8 @@
 #include <ImPlatform.h>
 #endif
 
+#include <string>
+
 #include <imgui_internal.h>
 
 #if (IM_CURRENT_PLATFORM == IM_PLATFORM_WIN32)
@@ -992,6 +994,188 @@ namespace ImPlatform
 		( *reinterpret_cast< ID3D12Resource** >( &id ) )->Release();
 		( *reinterpret_cast< ID3D12Resource** >( &id ) ) = NULL;
 
+#endif
+	}
+
+	void ReplaceAll( std::string& sStr, std::string const& sToFind, std::string const& sReplaceBy )
+	{
+		size_t	uStart = 0;
+		while ( ( uStart = sStr.find( sToFind, uStart ) ) != std::string::npos )
+		{
+			sStr.replace( uStart, sToFind.length(), sReplaceBy );
+			uStart += sReplaceBy.length();
+		}
+	}
+
+
+	ImShader	ImCreateShader( char* source )
+	{
+		static const char* pShaderBase =
+"#ifndef __IM_SHADER_H__\
+#define __IM_SHADER_H__\
+\
+#if defined(IM_SHADER_HLSL)\
+#define IMS_IN        in\
+#define IMS_OUT       out\
+#define IMS_INOUT     inout\
+#define IMS_UNIFORM   uniform\
+#elif defined(IMS_GLSL)\
+#define IMS_IN        in\
+#define IMS_OUT       out\
+#define IMS_INOUT     inout\
+#define IMS_UNIFORM   const\
+#endif\
+\
+#if defined(IM_SHADER_HLSL)\
+\
+#define Mat44f matrix<float, 4, 4>\
+#define Mat33f matrix<float, 3, 3>\
+\
+typedef bool        Bool;\
+#define f32         float\
+typedef uint        u32;\
+typedef int         i32;\
+\
+#endif\
+\
+#if defined(IMS_GLSL)\
+\
+#define Mat44f   mat4\
+#define Mat33f   mat3\
+\
+#define Bool     bool\
+#define f32      float\
+#define float2   vec2\
+#define float3   vec3\
+#define float4   vec4\
+#define u32      uint\
+#define uint2    uvec2\
+#define uint3    uvec3\
+#define uint4    uvec4\
+#define i32      int\
+#define int2     ivec2\
+#define int3     ivec3\
+#define int4     ivec4\
+\
+#define float4x4 mat4\
+#define float3x3 mat3\
+#define float2x2 mat2\
+\
+#endif";
+
+		static const char* pVertexShaderDefault =
+"cbuffer vertexBuffer : register(b0) \
+{\
+	float4x4 ProjectionMatrix; \
+};\
+struct VS_INPUT\
+{\
+	float2 pos : POSITION;\
+	float4 col : COLOR0;\
+	float2 uv  : TEXCOORD0;\
+};\
+\
+struct PS_INPUT\
+{\
+	float4 pos : SV_POSITION;\
+	float4 col : COLOR0;\
+	float2 uv  : TEXCOORD0;\
+};\
+\
+PS_INPUT main(VS_INPUT input)\
+{\
+	PS_INPUT output;\
+	output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+	output.col = input.col;\
+	output.uv  = input.uv;\
+	return output;\
+}";
+
+		static const char* pPixelShaderTemplate =
+"struct PS_INPUT\
+{\
+	float4 pos : SV_POSITION;\
+	float4 col : COLOR0;\
+float2 uv  : TEXCOORD0;\
+};\
+sampler sampler0;\
+Texture2D texture0;\
+\
+float4 main(PS_INPUT input) : SV_Target\
+{\
+	float4 out_col;\
+	%IM_PLATFORM_WRITE_OUT_COL%\
+	out_col *= input.col * texture0.Sample(sampler0, input.uv); \
+	return out_col; \
+}";
+
+		std::string sVS = pShaderBase;
+		sVS += pVertexShaderDefault;
+		std::string sPS = pShaderBase;
+
+		std::string sFunc = pPixelShaderTemplate;
+		ReplaceAll( sFunc, "%IM_PLATFORM_WRITE_OUT_COL%", source );
+		sPS += sFunc;
+
+#if (IM_CURRENT_GFX == IM_GFX_OPENGL2) || (IM_CURRENT_GFX == IM_GFX_OPENGL3)
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX9)
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX10)
+
+		ImGui_ImplDX10_Data* bd = ImGui_ImplDX10_GetBackendData();
+
+		ID3D10VertexShader* pVertexShader = NULL;
+		ID3D10PixelShader* pPixelShader = NULL;
+
+		ID3DBlob* vertexShaderBlob;
+		if ( FAILED( D3DCompile( sVS.c_str(), sVS.size(), nullptr, nullptr, nullptr, "main", "vs_4_0", 0, 0, &vertexShaderBlob, nullptr ) ) )
+			return { NULL, NULL };; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+		if ( bd->pd3dDevice->CreateVertexShader( vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), &pVertexShader ) != S_OK )
+		{
+			vertexShaderBlob->Release();
+			return { NULL, NULL };
+		}
+
+		ID3DBlob* pixelShaderBlob;
+		if ( FAILED( D3DCompile( sPS.c_str(), sPS.size(), nullptr, nullptr, nullptr, "main", "ps_4_0", 0, 0, &pixelShaderBlob, nullptr ) ) )
+			return { NULL, NULL }; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+		if ( bd->pd3dDevice->CreatePixelShader( pixelShaderBlob->GetBufferPointer(), pixelShaderBlob->GetBufferSize(), &pPixelShader ) != S_OK )
+		{
+			pixelShaderBlob->Release();
+			return { NULL, NULL };
+		}
+		pixelShaderBlob->Release();
+
+		return { pVertexShader, pPixelShader };
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX11)
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX12)
+
+#endif
+
+		return { NULL, NULL };
+	}
+
+	void		ImReleaseShader( ImShader& shader )
+	{
+#if (IM_CURRENT_GFX == IM_GFX_OPENGL2) || (IM_CURRENT_GFX == IM_GFX_OPENGL3)
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX9)
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX10)
+
+		ID3D10VertexShader* pVertexShader = ( ID3D10VertexShader* )shader.vs;
+		ID3D10PixelShader* pPixelShader = ( ID3D10PixelShader* )shader.ps;
+
+		pVertexShader->Release();
+		pPixelShader->Release();
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX11)
+
+#elif (IM_CURRENT_GFX == IM_GFX_DIRECTX12)
+
 #endif
 	}
 

ImPlatform/ImPlatform.h

@@ -5,6 +5,8 @@
 
 // For Dx12: #define ImTextureID ImU64
 
+#define IM_PLATFORM_ENABLE_CUSTOM_SHADER
+
 #include <imgui.h>
 
 // To override the link of glfw3 do not use, other it ImPlatform will use the lib included on imgui
@@ -315,6 +317,15 @@ namespace ImPlatform
 	ImTextureID	ImCreateTexture2D	( char* pData, ImU32 const uWidth, ImU32 const uHeight, ImImageDesc const& oImgDesc );
 	void		ImReleaseTexture2D	( ImTextureID id );
 
+	typedef void* ImShaderID;
+	struct ImShader
+	{
+		ImShaderID vs;
+		ImShaderID ps;
+	};
+	ImShader	ImCreateShader( char* source );
+	void		ImReleaseShader( ImShader& shader );
+
 	bool		ImIsMaximized();
 
 	// Custom Title Bar

ImPlatformDemo/main.cpp

@@ -33,7 +33,7 @@
 #define __DEAR_WIN__
 //#define IM_GLFW3_AUTO_LINK
 //#define __DEAR_GLFW__
-#define __DEAR_GFX_DX9__
+#define __DEAR_GFX_DX10__
 //#define __DEAR_GFX_OGL3__
 //#define IM_CURRENT_TARGET IM_TARGET_GLFW_OPENGL3
 //#define IM_THE_CHERNO_GLFW3