diff options
| -rw-r--r-- | src/mesa/main/api_validate.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c index 7d989338582..a93a67de1ea 100644 --- a/src/mesa/main/api_validate.c +++ b/src/mesa/main/api_validate.c @@ -89,7 +89,19 @@ check_valid_to_render(struct gl_context *ctx, const char *function) _mesa_error(ctx, GL_INVALID_OPERATION, "%s(no VAO bound)", function); return false; } - /* fallthrough */ + + /* Section 7.3 (Program Objects) of the OpenGL 4.5 Core Profile spec + * says: + * + * "If there is no active program for the vertex or fragment shader + * stages, the results of vertex and/or fragment processing will be + * undefined. However, this is not an error." + * + * The fragment shader is not tested here because other state (e.g., + * GL_RASTERIZER_DISCARD) affects whether or not we actually care. + */ + return ctx->VertexProgram._Current != NULL; + case API_OPENGL_COMPAT: { const struct gl_shader_program *const vsProg = ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX]; |