| 30 | } |
| 31 | |
| 32 | std::shared_ptr<VisualProgram> GLSLProgramFactory::CreateFromNamedSources( |
| 33 | std::string const&, std::string const& vsSource, |
| 34 | std::string const&, std::string const& psSource, |
| 35 | std::string const&, std::string const& gsSource) |
| 36 | { |
| 37 | if (vsSource == "" || psSource == "") |
| 38 | { |
| 39 | LogError("A program must have a vertex shader and a pixel shader."); |
| 40 | } |
| 41 | |
| 42 | GLuint vsHandle = Compile(GL_VERTEX_SHADER, vsSource); |
| 43 | if (vsHandle == 0) |
| 44 | { |
| 45 | return nullptr; |
| 46 | } |
| 47 | |
| 48 | GLuint psHandle = Compile(GL_FRAGMENT_SHADER, psSource); |
| 49 | if (psHandle == 0) |
| 50 | { |
| 51 | return nullptr; |
| 52 | } |
| 53 | |
| 54 | GLuint gsHandle = 0; |
| 55 | if (gsSource != "") |
| 56 | { |
| 57 | gsHandle = Compile(GL_GEOMETRY_SHADER, gsSource); |
| 58 | if (gsHandle == 0) |
| 59 | { |
| 60 | return nullptr; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | GLuint programHandle = glCreateProgram(); |
| 65 | if (programHandle == 0) |
| 66 | { |
| 67 | LogError("Program creation failed."); |
| 68 | } |
| 69 | |
| 70 | glAttachShader(programHandle, vsHandle); |
| 71 | glAttachShader(programHandle, psHandle); |
| 72 | if (gsHandle > 0) |
| 73 | { |
| 74 | glAttachShader(programHandle, gsHandle); |
| 75 | } |
| 76 | |
| 77 | if (!Link(programHandle)) |
| 78 | { |
| 79 | glDetachShader(programHandle, vsHandle); |
| 80 | glDeleteShader(vsHandle); |
| 81 | glDetachShader(programHandle, psHandle); |
| 82 | glDeleteShader(psHandle); |
| 83 | if (gsHandle) |
| 84 | { |
| 85 | glDetachShader(programHandle, gsHandle); |
| 86 | glDeleteShader(gsHandle); |
| 87 | } |
| 88 | glDeleteProgram(programHandle); |
| 89 | return nullptr; |
nothing calls this directly
no test coverage detected