ID3D10Effect *GutLoadFXShaderDX10(const char *filename)
{
//DWORD dwShaderFlags = D3D10_SHADER_ENABLE_BACKWARDS_COMPATIBILITY;
//DWORD dwShaderFlags = D3D10_SHADER_ENABLE_STRICTNESS;
DWORD dwShaderFlags = 0;
#if defined( DEBUG ) || defined( _DEBUG )
dwShaderFlags |= D3D10_SHADER_DEBUG;
#endif
ID3D10Blob *pErrorMessage = NULL;
ID3D10Effect *pFXShader = NULL;
char filename_fullpath[128];
sprintf(filename_fullpath, "%s%s", GutGetShaderPath(), filename);
if ( D3D_OK!=D3DX10CreateEffectFromFile(
filename_fullpath, g_pHLSL_Macros, NULL,
"fx_4_0", dwShaderFlags, 0,
g_pd3dDevice, NULL, NULL,
&pFXShader, &pErrorMessage, NULL) )
{
if ( pErrorMessage )
{
printf("Failed to compile %s : %s\n", pErrorMessage->GetBufferPointer());
}
}
SAFE_RELEASE(pErrorMessage);
return pFXShader;
}
GLuint _LoadGLSLShader(const char *filename, GLenum type)
{
char filename_fullpath[256];
sprintf(filename_fullpath, "%s%s", GutGetShaderPath(), filename);
GLuint shader = glCreateShader(type);
unsigned int len = 0;
const GLchar *code = (const GLchar *)GutLoadFileStream(filename, &len);
GLint size = len;
glShaderSource(shader, 1, &code, &size);
glCompileShader(shader);
GLint result;
glGetShaderiv(shader, GL_COMPILE_STATUS, &result);
if ( GL_TRUE!=result )
{
GLchar pMessage[2048];
GLsizei msgLen = 1023;
glGetShaderInfoLog(shader, size, &msgLen, pMessage);
printf("%s compile error\n", filename);
printf("%s\n", pMessage);
glDeleteShader(shader);
shader = 0;
}
GutReleaseFileStream(code);
return shader;
}
// 载入Pixel Shader
// file = HLSL shader file
// entry = pixel shader entry point
// profile = shader version
ID3D10PixelShader * GutLoadPixelShaderDX10_HLSL(const char *filename, const char *entry, const char *profile)
{
DWORD dwShaderFlags = D3D10_SHADER_ENABLE_BACKWARDS_COMPATIBILITY;
#if defined( DEBUG ) || defined( _DEBUG )
dwShaderFlags |= D3D10_SHADER_DEBUG;
#endif
ID3D10PixelShader *pShader = NULL;
ID3D10Blob *pBuf = NULL;
ID3D10Blob *pErrorMessage = NULL;
char filename_fullpath[128];
sprintf(filename_fullpath, "%s%s", GutGetShaderPath(), filename);
if ( D3D_OK==D3DX10CompileFromFile(filename_fullpath, g_pHLSL_Macros, NULL, entry, profile, dwShaderFlags, NULL, NULL, &pBuf, &pErrorMessage, NULL) )
{
g_pd3dDevice->CreatePixelShader( (DWORD*) pBuf->GetBufferPointer(), pBuf->GetBufferSize(), &pShader);
}
else
{
if ( pErrorMessage )
{
printf("Failed to compile %s : %s\n", pErrorMessage->GetBufferPointer());
}
}
SAFE_RELEASE(pErrorMessage);
SAFE_RELEASE(pBuf);
return pShader;
}
// 載入OpenGL ARB Fragment Program規格的組合語言
GLuint GutLoadFragmentProgramOpenGL_ASM(const char *filename)
{
char filename_fullpath[256];
sprintf(filename_fullpath, "%s%s", GutGetShaderPath(), filename);
unsigned int size = 0;
// 讀入檔案
unsigned char *buffer = (unsigned char *) GutLoadBinaryStream(filename_fullpath, &size);
if ( buffer==NULL )
{
return 0;
}
GLuint shader_id = 0;
// 產生一個shader物件
glGenProgramsARB(1, &shader_id);
// 使用新的shader物件, 並把它設定成fragment program物件
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, shader_id );
// 把組合語言指令載入shader物件中
glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, size, buffer);
// 如果Shader中出現了任何錯誤
if ( GL_INVALID_OPERATION == glGetError() )
{
// Find the error position
GLint errPos;
glGetIntegerv( GL_PROGRAM_ERROR_POSITION_ARB, &errPos );
// errors and warnings string.
GLubyte *errString = (GLubyte *) glGetString(GL_PROGRAM_ERROR_STRING_ARB);
fprintf( stderr, "error at position: %d\n%s\n", errPos, errString );
// 讀取失敗, 釋放shader物件
glDeleteProgramsARB(1, &shader_id);
shader_id = 0;
}
// 把載入檔案的記憶體釋放
GutReleaseBinaryStream(buffer);
// shader_id代表新的shader物件
return shader_id;
}
