diff options
Diffstat (limited to 'source/blender/gpu/intern/gpu_codegen.c')
| -rw-r--r-- | source/blender/gpu/intern/gpu_codegen.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_codegen.c b/source/blender/gpu/intern/gpu_codegen.c index 20e65028495..18b512309bd 100644 --- a/source/blender/gpu/intern/gpu_codegen.c +++ b/source/blender/gpu/intern/gpu_codegen.c @@ -365,6 +365,10 @@ const char *GPU_builtin_name(GPUBuiltin builtin) return "unfobcolor"; else if (builtin == GPU_AUTO_BUMPSCALE) return "unfobautobumpscale"; + else if (builtin == GPU_MATCAP_NORMAL) + return "gl_SecondaryColor"; + else if (builtin == GPU_COLOR) + return "gl_Color"; else return ""; } @@ -665,6 +669,18 @@ static char *code_generate_vertex(ListBase *nodes) else BLI_dynstr_appendf(ds, "\tvar%d = att%d;\n", input->attribid, input->attribid); } + /* unfortunately special handling is needed here because we abuse gl_Color/gl_SecondaryColor flat shading */ + else if (input->source == GPU_SOURCE_BUILTIN) { + if (input->builtin == GPU_MATCAP_NORMAL) { + /* remap to 0.0 - 1.0 range. This is done because OpenGL 2.0 clamps colors + * between shader stages and we want the full range of the normal */ + BLI_dynstr_appendf(ds, "\tvec3 matcapcol = vec3(0.5, 0.5, 0.5) * varnormal + vec3(0.5, 0.5, 0.5);\n"); + BLI_dynstr_appendf(ds, "\tgl_FrontSecondaryColor = vec4(matcapcol, 1.0);\n"); + } + else if (input->builtin == GPU_COLOR) { + BLI_dynstr_appendf(ds, "\tgl_FrontColor = gl_Color;\n"); + } + } BLI_dynstr_append(ds, "}\n\n"); |