diff options
| -rw-r--r-- | src/mesa/shader/program.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c index 27eb5c2f43..f6877bd142 100644 --- a/src/mesa/shader/program.c +++ b/src/mesa/shader/program.c @@ -1722,6 +1722,27 @@ _mesa_print_program_parameters(GLcontext *ctx, const struct gl_program *prog) } +/** + * Mixing ARB and NV vertex/fragment programs can be tricky. + * Note: GL_VERTEX_PROGRAM_ARB == GL_VERTEX_PROGRAM_NV + * but, GL_FRAGMENT_PROGRAM_ARB != GL_FRAGMENT_PROGRAM_NV + * The two different fragment program targets are supposed to be compatible + * to some extent (see GL_ARB_fragment_program spec). + * This function does the compatibility check. + */ +static GLboolean +compatible_program_targets(GLenum t1, GLenum t2) +{ + if (t1 == t2) + return GL_TRUE; + if (t1 == GL_FRAGMENT_PROGRAM_ARB && t2 == GL_FRAGMENT_PROGRAM_NV) + return GL_TRUE; + if (t1 == GL_FRAGMENT_PROGRAM_NV && t2 == GL_FRAGMENT_PROGRAM_ARB) + return GL_TRUE; + return GL_FALSE; +} + + /**********************************************************************/ /* API functions */ @@ -1809,7 +1830,7 @@ _mesa_BindProgram(GLenum target, GLuint id) } _mesa_HashInsert(ctx->Shared->Programs, id, prog); } - else if (prog->Target != target) { + else if (!compatible_program_targets(prog->Target, target)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBindProgramNV/ARB(target mismatch)"); return; |